EP1921177A2 - Application de couches de protection contre l'usure sur des matières premières métalliques formant un film barrière ou leur alliage par traitement au laser - Google Patents

Application de couches de protection contre l'usure sur des matières premières métalliques formant un film barrière ou leur alliage par traitement au laser Download PDF

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Publication number
EP1921177A2
EP1921177A2 EP07019137A EP07019137A EP1921177A2 EP 1921177 A2 EP1921177 A2 EP 1921177A2 EP 07019137 A EP07019137 A EP 07019137A EP 07019137 A EP07019137 A EP 07019137A EP 1921177 A2 EP1921177 A2 EP 1921177A2
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EP
European Patent Office
Prior art keywords
layer
aluminum
laser
oxygen
alloys
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EP07019137A
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German (de)
English (en)
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EP1921177A3 (fr
Inventor
Peter Prof. Dr. rer. nat. habil. Kurze
Hermann H. Dr. Urlberger
Jürgen Koch
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Aalberts Surface Technologies GmbH Kerpen
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AHC Oberflaechenechnik GmbH
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Publication of EP1921177A2 publication Critical patent/EP1921177A2/fr
Publication of EP1921177A3 publication Critical patent/EP1921177A3/fr
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
    • C23C28/044—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material coatings specially adapted for cutting tools or wear applications
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
    • C23C28/048—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material with layers graded in composition or physical properties

Definitions

  • the present invention relates to a method for producing wear protection layers on materials of barrier layer-forming metals, in particular aluminum, magnesium and titanium and their alloys and mixtures, by means of laser treatment and the application of this method as well as the materials produced in this way provided with wear protection layers.
  • wear protection layers on materials of barrier layer-forming metals such as aluminum, magnesium and titanium and their alloys
  • ANOF process anodic oxidation under spark or arc discharge
  • aqueous or aqueous-organic electrolyte solutions wear protection layers with excellent properties.
  • Such a method is for example in the EP 0 545 230 B 1 described. Disadvantage of this method is that they work electrolytically and therefore use electrolyte baths, which must then be disposed of. Also, the produced layers must be cleaned after their preparation of unwanted constituents of the electrolyte bath. Therefore, there is an increasing desire to produce such wear protection layers in other ways.
  • Another possibility of surface refinement by means of laser treatment is to produce by the laser treatment oxide ceramic protective layers on aluminum materials, wherein hard material particles such. As alumina (Al 2 O 3 ), zirconia (ZrO 2 ), etc., are melted onto the surface of the aluminum material (see. Lasers and Optoelectronics, 29 (4), pages 48 to 52, 1997 ).
  • the disadvantage of this fundamental possibility to melt solids by laser and apply to the relevant material surfaces, is that these particles can not be uniformly applied to the surface of the material. Especially with complicated shaped components, a uniform coating can not be realized.
  • a poor adhesion of the molten particles is often observed with respect to the material surface, which often has the cause in an already existing oxide layer on the workpiece to be treated.
  • the problem underlying the present invention is therefore the provision of a method for producing wear protection layers on materials of barrier layer-forming metals, in particular aluminum, magnesium and titanium and their alloys and mixtures, which at least largely avoids or at least mitigates the previously described disadvantages of the prior art ,
  • the present invention proposes a method according to claim 1 according to a first aspect of the present invention. Further, particularly advantageous embodiments of the method according to the invention are the subject of the method subclaims.
  • the Applicant has now surprisingly found that the above-described problem can be solved by that the material surfaces of materials based on barrier layer-forming metals such as aluminum, magnesium and titanium and their alloys and mixtures, in the presence of an oxygen-containing atmosphere of a laser treatment or Laser irradiation in the form of a laser oxidation treatment exposes such that the upper or outer layer of the material surface is reacted with the oxygen to form an oxide of the material metal, while the underlying layer of the material is remelted without reaction with the oxygen.
  • barrier layer-forming metals such as aluminum, magnesium and titanium and their alloys and mixtures
  • Another object of the present invention is - according to a second aspect of the present invention - the inventive application of the method according to the present invention, as defined in claims 17 to 19.
  • present invention - according to a further, third aspect of the present invention - the obtainable by the process according to the invention materials according to the present invention, which are provided with a wear protection layer of the aforementioned type and as defined in claims 20 to 22.
  • the present invention is thus - according to a first aspect of the present invention - a method for producing wear protection layers on materials of barrier layer-forming metals, in particular aluminum, magnesium and titanium and their alloys and mixtures, preferably aluminum or its alloys, by means of laser treatment, wherein the Material surface in the presence of an oxygen-containing atmosphere is exposed to a laser irradiation such that the upper or outer layer of the material surface with the oxygen of the oxygen-containing atmosphere to an oxide of the Maschinenstoffinetalls, preferably alumina, reacted or reacted and the underlying layer of the material without reacting with the oxygen is remelted.
  • the laser treatment according to the invention or laser oxidation results in wear protection layers having excellent wear protection properties, in particular excellent corrosion resistance and excellent abrasion resistance and extreme hardness, the wear protection layers - unlike the prior art aluminum nitride layers - having no brittleness and hardness due to a hardness gradient within the layer structure (Vickers hardness) of the layers or the layer structure gradually decreases from outside to inside - has excellent mechanical properties, especially at punctual Loading the surface does not tend to a so-called "eggshell effect".
  • the layers produced according to the invention have comparable or in some cases improved properties compared to wear protection layers produced by conventional electrolytic processes, the disadvantages of which are avoided in an efficient manner, in particular by avoiding the use of electrolyte baths.
  • the actual wear protection layer as such generally comprises a two-layer structure, this the upper or outer oxide layer of the material metal and adjacent to the upper or outer oxide layer lying below this oxide layer of the remelted material ("remelting layer"), below which the adjoining, unaltered (i.e., unreacted and not remelted) layer of the material is arranged.
  • remelting layer the remelted material
  • the outer layer ie, the oxide layer of the material metal
  • the outer layer has the highest hardness (Vickers hardness), the underlying remelting a lower compared to this hardness (Vickers hardness) and in turn arranged below this layer of the base material, the lowest hardness (Vickers hardness ) on.
  • Vickers hardness the lowest hardness
  • a multilayer structure with the aforementioned hardness gradient results, which leads to excellent mechanical properties.
  • the material metal used in particular is aluminum or an aluminum alloy, so that the upper, outer layer of the laser treatment or laser oxidation according to the invention results in an aluminum oxide layer (Al 2 O 3 layer).
  • the material according to the invention may be, for example, a diecasting or casting, in particular an aluminum die cast or cast aluminum.
  • it may be a coarse-grained pressure casting or casting, in particular die-cast aluminum or cast aluminum, which may optionally before the generation of the wear protection layer by the laser treatment according to the invention remelting, in particular equally by laser treatment, as previously described, may have been subjected, this pretreatment optional is.
  • wrought alloys in particular aluminum wrought alloys, can also be subjected to the treatment according to the invention.
  • the aforementioned examples of materials used are not limiting in nature.
  • a laser having a wavelength in the range from 700 to 1200 nm, in particular 800 to 1100 nm, is used for the laser treatment according to the invention.
  • both pulsed and non-pulsed lasers can be used for the laser treatment or laser oxidation according to the invention.
  • the pulse duration (FWHM) is selected in particular in the range from 10 -7 s to 10 -2 s, in particular at about 10 -3 s; Over the pulse duration of the laser, the layer thickness of the wear protection layer can be controlled specifically.
  • a non-pulsed diode laser or an Nd: YAG laser in particular each having a wavelength in the range from 800 to 1100 nm, can be used as the laser in the context of the method according to the invention.
  • the laser treatment is carried out in such a way, in particular the laser radiation applied or radiated energy such that the reaction temperature T reaction at the material surface is at least 1000 ° C (T reaction ⁇ 1000 ° C).
  • the power density of the laser used can vary widely.
  • the power density of the laser used for example, in the range of 10 4 to 10 8 W / cm 2 , in particular in the range of 10 5 to 10 7 W / cm 2 , preferably with about 10 6 W / cm 2 , are selected. Nevertheless, it may be necessary on a case-by-case or application-related basis to deviate from the aforementioned values without departing from the scope of the present invention.
  • the laser treatment or laser oxidation according to the invention is carried out in an oxygen-containing atmosphere.
  • the oxygen-containing atmosphere can either comprise or consist of pure oxygen or comprise or consist of a gas mixture of oxygen with at least one further, inert under reaction conditions, inert gas, preferably a noble gas. So that no nitrides, in particular aluminum nitride, can be formed in the laser treatment or laser oxidation according to the invention, the oxygen-containing atmosphere contains no nitrogen and / or no gas generating nitrogen under reaction conditions.
  • the process according to the invention is carried out under atmospheric pressure. Nevertheless, it is not excluded to carry out the process under reduced or elevated pressure, although the implementation of the process under atmospheric pressure is preferred.
  • Wear protection layers produced by the process according to the invention generally have total thicknesses of 50 to 350 ⁇ m, in particular 75 to 300 ⁇ m, preferably 100 to 250 ⁇ m. These thicknesses generally include the upper or outer oxide layer and the underlying remelt layer.
  • the upper or outer layer which in the case of aluminum or aluminum alloys is an aluminum oxide layer (Al 2 O 3 layer), optionally with further constituents (eg SiO 2 or mullite in the case of silicon-containing aluminum alloys), so their layer thickness is generally 1 to 50 .mu.m, in particular 2 to 30 .mu.m, preferably 3 to 20 microns.
  • the upper, outer layer in particular aluminum oxide layer (Al 2 O 3 layer), has an extreme hardness.
  • the Vickers hardness (HV) of this upper (outer) layer is at least 1000 HV, in particular at least 1500 HV, preferably at least 2000 HV.
  • this upper, outer layer in particular aluminum oxide layer (Al 2 O 3 layer), is its extremely low roughness (roughness):
  • the roughness (roughness) R a of the upper, outer layer is ⁇ 0.5 ⁇ m, in particular ⁇ 0.4 ⁇ m, preferably ⁇ 0.3 ⁇ m.
  • the upper, outer layer of the wear protection layer of the invention is an aluminum oxide (Al 2 O 3 layer) and comprises at least 60%, preferably at least 80%, more preferably at least 90%, corundum ( ⁇ -Al 2 O 3 ). This explains the extreme hardness of this outer layer.
  • the upper layer may also contain up to 10%, in particular up to 20%, preferably up to 30%, of silicon dioxide (SiO 2 ), preferably in the form of mullite; this also shows a great Vickers hardness. All of the above percentages are by weight based on the weight of the upper, outer layer.
  • the remelt layer arranged under the outer oxide layer in particular Al 2 O 3 layer, this generally has a thickness in the range from 50 to 300 ⁇ m, in particular 75 to 250 ⁇ m, preferably 100 to 200 ⁇ m.
  • This remelting layer generally has a Vickers hardness (HV) which is less than the Vickers hardness (HV) of the overlying outer layer and greater than the Vickers hardness (HV) of the underlying layer of the base material.
  • HV Vickers hardness
  • the remelt layer arranged below the outer oxide layer, in particular below the outer Al 2 O 3 layer has a Vickers hardness (HV) ⁇ 150 HV, in particular ⁇ 200 HV.
  • the significantly lower Vickers hardness of the remelt layer compared to the outer oxide layer is explained by the fact that the remelt layer was formed merely by remelting of the base material but did not react with the oxygen of the laser treatment atmosphere; in turn, the greater Vickers hardness of the remelt layer compared to the underlying layer of the base material is explained by the fact that a finely dispersed or fine-grained phase or layer has been formed by the remelting process.
  • Umschmelz GmbH finely dispersed and / or fine-grained, in particular with a particle size ⁇ 1 micron, preferably ⁇ 0.5 microns.
  • the base material lying below the remelt layer is generally coarse-grained and / or coarse-disperse, in particular with a particle size of> 10 ⁇ m, preferably> 20 ⁇ m.
  • the base material disposed below the remelt layer generally has a lower Vickers hardness than the overlying remelt layer.
  • the Vickers hardness (HV) of the base layer underlying the remelt layer is up to 150 HV, and is in particular in the range of 50 to 150 HV, preferably 75 to 125 HV.
  • the process according to the present invention can be carried out in several stages: In a first process step, only a remelting of the material surface, preferably in near-surface regions, can be carried out (as described above under inert or Non-reactive conditions) and subsequently produced or applied in a second process step with the inventive method, a corundum or corundum / mullite cover layer. In this case, the two method steps can be carried out in succession. The same or different laser types can be used for the two process steps.
  • the first process step the remelting is generally carried out under inert conditions, without a chemical reaction of the material surface to an oxide layer takes place; In this regard, reference may be made to the foregoing to avoid unnecessary repetition.
  • the process of the present invention results in wear resistant coatings having excellent corrosion resistance as well as excellent abrasion resistance and extreme hardness.
  • the multilayer Gefiige which results from the laser treatment according to the invention or laser oxidation, also tends to no brittleness, so that the wear protection layers according to the invention are also suitable for components, in particular safety components, which are exposed to vibrations (eg aluminum components of internal combustion engines, such as pistons , Cylinder surfaces, valves, etc.).
  • the laser treatment can also be used if selectively only a certain area of the material or workpiece is to be oxidized from barrier layer-forming metals (eg only the annular groove of a piston for internal combustion engines).
  • barrier layer-forming metals eg only the annular groove of a piston for internal combustion engines.
  • the reaction gas oxygen or a mixture of oxygen / inert gas (nitrogen-free!) As defined above, flows.
  • the distance of the nozzle from the base of the laser beam should z. B. be at least 5 mm and is, depending on the application, for. B. maximum 30 mm.
  • the angle of incidence of the nozzle to the surface of the workpiece should be 60 ° to 95 °. If pure oxygen is used, Thus, for example, a volume flow at exit from the nozzle of 5 1 / min to 30 1 / min can be set.
  • the arrangement of the use of a nozzle for the laser oxidation according to the invention can be used for example for the machining of grooves, such as the annular groove of an aluminum engine piston, or bores.
  • the laser oxidation according to the invention it is possible, for example, the annular groove of an aluminum piston of G-AlSi12MgCuNi with a wear protection layer mainly of corundum with a hardness of the upper layer of up to about 2,000 HV and more and a layer thickness of the upper layer of up to 15 microns and more and a roughness R a of 0.4 to 0.5 microns and an unmelted, underlying layer with a hardness of 150 to 200 HV manufacture.
  • the aluminum engine piston to be coated can be rotated in a clamping device and the laser can be directed to the annular groove of the piston with the parameters described above. It is alternatively also possible to move the laser and to fix the tool or the material on which the wear protection layer is to be attached.
  • the laser treatment produces very high temperatures above 1000 ° C on the treated material surface, so that the barrier layer-forming metal is melted and the upper layer reacts with the oxygen to the corresponding oxide, whereas the underlying layer is merely melted without reacting with the oxygen to be able to.
  • the upper, outer layer of alumina (Al 2 O 3 ) in the modification corundum comprises at least 60% (see above). Vickers hardnesses of up to about 2000 HV (0.1) and more are determined. This high hardness is due to the fact that preferably corundum is formed as a high-temperature form of the aluminum oxide. X-ray measurements have shown that the corundum content varies in the range of 60% to 90% and in particular depends on the registered temperature and / or the exposure time of the laser.
  • Al alloys with high levels of silicon such as.
  • GD-AlSi12, GD-AlSi9Cu3, G-AlSi12MgCuNi, ADC 12, etc. formed in addition to corundum ( ⁇ -Al 2 O 3 ) and mullite (SiO 2 ), which is equally very hard;
  • Vickers hardnesses of up to approx. 1900 HV (0.1) and more are measured. From X-ray measurements it was found that the proportion of mullite (SiO 2 ) z. B. when using the alloy GD-AlSi12 in the corundum matrix is up to 30%.
  • the upper layer has low roughness or roughness R a .
  • the corundum layer typically has a roughness R a of approximately 0.3 to 0.5 ⁇ m and a layer thickness of typically 1 to 50 ⁇ m, in particular 2 to 30 ⁇ m, preferably 3 to 20 ⁇ m.
  • the remelted layer has a Vickers hardness, depending on the alloy used, of typically 150 to 200 HV (in comparison thereto, coarse Al casting or Al die casting has Vickers hardnesses of only 60 to 80 HV), is finely dispersed or fine-grained and in particular has particle sizes of less than 1 .mu.m, preferably less than 0.5 microns.
  • Fig. 1 the basic structure of the layer system described above is illustrated.
  • SEM image according to FIG. 2 this multilayer structure of layers is shown in section.
  • the method according to the invention can be used universally and tailored to the specific applications.
  • Another object - according to a second aspect of the present invention - is thus the application of the method according to the invention, as described in claims 17 to 19.
  • the method according to the invention for example, for the production of wear protection layers on products of mechanical engineering, in particular of the automotive industry, apply, for example, for components of internal combustion engines, such.
  • components of internal combustion engines such as cylinders, cylinder liners, pistons, camshafts, bucket tappets, valves, bearings on connecting rods, etc.
  • the method according to the invention can be used, for example, for producing wear protection layers on pistons of internal combustion engines, in particular for their at least partial coating, preferably at least in the area of the upper or uppermost annular groove of the pistons.
  • the method according to the invention can also be used, for example, for the production of wear-resistant coatings on products of medicine and medical technology.
  • the present invention - according to a third aspect of the present invention - materials of barrier layer-forming metals, in particular aluminum, magnesium and titanium and their alloys and mixtures, preferably aluminum or its alloys, whose surfaces are provided with wear protection layers, as described previously described inventive method are available.
  • barrier layer-forming metals in particular aluminum, magnesium and titanium and their alloys and mixtures, preferably aluminum or its alloys, whose surfaces are provided with wear protection layers, as described previously described inventive method are available.
  • the present invention materials of barrier layer-forming metals, in particular aluminum, magnesium and titanium and their alloys and mixtures, preferably aluminum or its alloys, the surface is provided with a generated by laser treatment in the presence of an oxygen-containing atmosphere wear protection layer, wherein the upper, outer layer of the material surface comprises an oxide layer of the material metal, preferably aluminum oxide, and the underlying layer comprises an unreacted, remelted layer of the material.
  • barrier layer-forming metals in particular aluminum, magnesium and titanium and their alloys and mixtures, preferably aluminum or its alloys
  • the surface is provided with a generated by laser treatment in the presence of an oxygen-containing atmosphere wear protection layer, wherein the upper, outer layer of the material surface comprises an oxide layer of the material metal, preferably aluminum oxide, and the underlying layer comprises an unreacted, remelted layer of the material.
  • the anti-wear layer produced according to the present invention is generally a multilayered, especially a two-layer, layered layer comprising the upper, outer oxide layer of the material metal and the layer of the remelted material ("remelt layer") adjacent to the upper, outer oxide layer and underlying the oxide layer. below which then the adjoining unreacted or unchanged layer of the material is arranged.
  • the underlying material 3 consists of a coarse-grained or coarse-disperse phase on which the finely dispersed or coarse-disperse phase .
  • Fine-grained Umschmelz Anlagen 2 is arranged, on which in turn the oxide layer 1 of the material metal is applied.
  • a cylinder of G-AlSi12MgCuNi with a diameter of 40 mm and a length of 60 mm is treated on the lateral surface with an Nd: YAG laser (wavelength: 1,064 nm).
  • the power density at the base of the laser beam is set at 10 6 W / cm 2 .
  • the cylinder is clamped in a device and rotated at 6 rpm.
  • the lateral surface of the cylinder is scanned systematically with rotation of the cylinder and simultaneous axial feed of the laser, wherein the degree of overlap of the laser tracks is 30%.
  • the oxygen supply (atmosphere: pure oxygen) takes place via a nozzle coaxial with the laser beam at an angle of 60 °.
  • the distance of the nozzle from the base of the incident laser beam is 20 mm.
  • the gas used is pure oxygen at a flow rate of 15 l / min.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP07019137A 2006-10-30 2007-09-28 Application de couches de protection contre l'usure sur des matières premières métalliques formant un film barrière ou leur alliage par traitement au laser Withdrawn EP1921177A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006051709A DE102006051709A1 (de) 2006-10-30 2006-10-30 Erzeugung von Verschleißschutzschichten auf Werkstoffen aus sperrschichtbildenden Metallen oder deren Legierungen mittels Laserbehandlung

Publications (2)

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EP1921177A2 true EP1921177A2 (fr) 2008-05-14
EP1921177A3 EP1921177A3 (fr) 2011-03-16

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EP07019137A Withdrawn EP1921177A3 (fr) 2006-10-30 2007-09-28 Application de couches de protection contre l'usure sur des matières premières métalliques formant un film barrière ou leur alliage par traitement au laser

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US (1) US8029907B2 (fr)
EP (1) EP1921177A3 (fr)
JP (1) JP2008111190A (fr)
DE (1) DE102006051709A1 (fr)

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EP2853616A1 (fr) * 2013-09-26 2015-04-01 AHC-Oberflächentechnik GmbH Procédé de fabrication de couches d'oxyde de protection anti-corrosion et/ou anti-usure
EP2862648A1 (fr) * 2013-10-18 2015-04-22 Siemens Aktiengesellschaft Refonte partiellement d'éléments moulés et composants moulés
WO2015058938A1 (fr) * 2013-10-25 2015-04-30 Continental Automotive Gmbh Procédé visant à protéger la roue de compresseur d'un turbocompresseur à gaz d'échappement contre un endommagement éventuel et roue de compresseur

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DE202008010896U1 (de) 2008-08-05 2008-10-23 AHC Oberflächentechnik GmbH Werkstoff, insbesondere Bauteile, mit verbesserten Verschleißschutzschichten
US8347908B2 (en) * 2009-08-27 2013-01-08 Honeywell International Inc. Lightweight titanium aluminide valves and methods for the manufacture thereof
CN102335789A (zh) * 2011-11-11 2012-02-01 沈阳黎明航空发动机(集团)有限责任公司 一种去除叶片气膜孔内壁重熔层的装置及方法
DE102013210176B3 (de) * 2013-05-31 2014-09-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Laser-Prozess zur Erzeugung von Beschichtungen auf Leichtmetall(legierungen) sowie resultierende Beschichtungen und Produkte
DE102015213168A1 (de) 2015-07-14 2017-01-19 Robert Bosch Gmbh Verfahren zur Erzeugung einer strukturierten Oxidschicht sowie ein dadurch erzeugtes Substrat
DE102018110905A1 (de) 2018-05-07 2019-11-07 Lucas Automotive Gmbh Elektrode für ein Eloxal-Verfahren
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US8029907B2 (en) 2011-10-04

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