EP1994203A1 - Revetement pour un composant fonctionnel subissant une charge thermique et un phénomène d'érosion - Google Patents

Revetement pour un composant fonctionnel subissant une charge thermique et un phénomène d'érosion

Info

Publication number
EP1994203A1
EP1994203A1 EP07722820A EP07722820A EP1994203A1 EP 1994203 A1 EP1994203 A1 EP 1994203A1 EP 07722820 A EP07722820 A EP 07722820A EP 07722820 A EP07722820 A EP 07722820A EP 1994203 A1 EP1994203 A1 EP 1994203A1
Authority
EP
European Patent Office
Prior art keywords
release agent
functional component
coating
parts
binder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07722820A
Other languages
German (de)
English (en)
Inventor
Manfred Laudenklos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gelita AG
KS Huayu Alutech GmbH
Original Assignee
KS Aluminium Technologie GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KS Aluminium Technologie GmbH filed Critical KS Aluminium Technologie GmbH
Publication of EP1994203A1 publication Critical patent/EP1994203A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/006—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mineral polymers, e.g. geopolymers of the Davidovits type
    • C04B28/008—Mineral polymers other than those of the Davidovits type, e.g. from a reaction mixture containing waterglass
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
    • C23C22/74—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process for obtaining burned-in conversion coatings
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
    • C23C22/77—Controlling or regulating of the coating process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y10T428/257—Iron oxide or aluminum oxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/259—Silicic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal

Definitions

  • the invention relates to a metallic functional component, which is exposed to a thermal or a thermal and erosive load and on which a coating is applied to at least one surface, wherein the coating consists of a binder phase and a material embedded in the binder phase. Moreover, the invention relates to a release agent for producing a coating on a functional component and moreover relates to a method for producing a coating on a metallic surface of a functional component.
  • components that are subjected to thermal or thermal and erosive stress while flowing, pressurized, or exposed to a medium perform, for example, the function of a power transmission or a baffle. In this function, they are charged with flowing or expanding media. In many cases, it comes to strong temperature fluctuations, so that the components must meet the condition of temperature resistance. In many cases, components which are in contact with flowing media also lead to deposits, so that these components are usually provided with coatings.
  • Typical examples of such functional components are, for example, pistons, cylinder head calottes and the entire area of exhaust gas recirculation in the motor vehicle. In addition to the erosive loading of these components, these components are also inferior to high thermal loads and temperature fluctuations. To protect such functional components a variety of coatings and coating methods are known.
  • DE 101 24 434 A1 discloses a process for producing a coating and a coating for metals or metal alloys, such as steels, sintered metals or aluminum alloys from the fields of automobile construction and mechanical engineering.
  • the aim of this coating is to protect the materials mentioned against wear and corrosion.
  • the coating consists of an inorganic matrix phase, which consists at least largely of a phosphate and a material embedded therein.
  • the coating is an inorganic one Matrix phase of aluminum phosphate, are embedded in the materials such as alumina or graphite.
  • Such coatings are preferably applied to the substrate to be coated via water-based gels or dispersions of dissolved monoaluminum phosphate and powdered functional materials dispersed therein, dried and baked at typical temperatures of 150 ° C. to 500 ° C. in an oven.
  • the coating here refers to the surface of a piston skirt having a hard anodized coating and a composite polymer coating applied to the hard anodized coating.
  • the composite polymer coating comprises a variety of solid and lubricious particles in a heat-resistant polymer matrix that can withstand engine operating temperatures.
  • the known lubricant materials graphite, boron nitride, molybdenum et cetera are used.
  • the object of the present invention is to develop a coating of thermally or thermally and erosively loaded functional surfaces on components, which forms a chemical bond with the base material of the functional component and thus counteracts the erosive and thermal stresses on the functional components.
  • the coating should be easy to apply and have a high adhesion to the base material.
  • Another object of the invention is to provide a method capable of producing such a layer and which produces high adhesion between the binder and the base material.
  • the object according to the invention is achieved with respect to the functional component provided with a coating in that the binder phase is chemically bonded to the base material of the functional component and that the binder phase is formed from a polymer of polymerized zirconium fluoride, the functional component being part of an internal combustion engine.
  • a binder phase of polymerized zirconium fluoride now makes it possible to produce a chemical bond with the base material, and thus to produce a firmly adhering layer on the functional component.
  • Such coatings increase the life of the functional components and reduce, with improved effect the complicated and cost-intensive use of methods for improving the thermal shock behavior of the base materials. Furthermore, deposits are avoided by means of the layer according to the invention, which in turn serves to reduce emissions of motor vehicles.
  • structural parts of the form AI 2 O 3 and / or SiO 2 and / or TiO 2 and / or ZrO 2 are incorporated into the binder phase.
  • the polymer chains enclose the structural parts and bind the structural parts to the base material.
  • the fluoride is either a chemical bond with an existing iron in the base material or a non-metal such as aluminum. It is thus produced a firmly adhering layer on the functional component, which forms a great security against erosive loads by means of a chemical bond with the base material and the inclusion of the structural elements in the polymer chains.
  • the hard structural parts which are present as oxides, as a wear carrier and the binder phase as a binder between the base material and structural element.
  • the structural parts are present in a fraction of 80nm to 200nm and form with up to 10 wt .-%, the largest proportion of particulate materials in the coating.
  • the structural parts have a relatively coarse surface structure, so that on the one hand the structural parts interlock with each other and at the same time ensure a good hold in the binder phase.
  • Primary parts of the form Al 2 O 3 and / or SiO 2 and / or ZnO and / or TiO 2 and / or ZrO 2 and / or CeO are preferably introduced into the binder phase with the structural parts.
  • the primary parts are integrated.
  • the primary parts are optimally suited to serve as fillers between the structural parts. This results in a very smooth surface, which in turn counteracts erosion and deposition of the soot particles acting on the functional part, for example contained in an exhaust gas of an exhaust gas recirculation channel.
  • the very smooth and resistant surface thus enables the advantage according to the invention that the functional components provided with a coating according to the invention have a long service life.
  • the primary parts are preferably present in proportions of 1 wt .-% to 3 wt .-% in the coating.
  • sliding parts of the form boron nitride and / or magnesium aluminum silicate and / or molybdenum disulfide and / or silicate minerals, for example mica, are incorporated into the binder phase.
  • the sliding parts are contained in the coating at levels of up to 5% by weight.
  • the much larger sliding parts with dimensions of 2 ⁇ m to 15 ⁇ m are likewise held by the polymer chains or lie between the structural parts in the coating.
  • Thicknesses between 1 .mu.m and 80 .mu.m are preferably provided as layer thicknesses.
  • a thickness of between 25 ⁇ m and 60 ⁇ m is preferred on the surface of the functional component.
  • Functional components are for example components such as pistons, a cylinder head calotte, or parts of the exhaust gas recirculation in a motor vehicle.
  • the functional components are made of aluminum alloys or steel. It is also possible to form a coating according to the invention on a functional component made of cast iron, in particular a cast iron of the form GG 1 GGG, GGV.
  • the object according to the invention is achieved in relation to the release agent for producing a coating on a functional component such that the release agent is formed from a demineralized water and contains the following constituents:
  • an acid generator in particular in the form of sodium hydroxide and / or potassium hydroxide and / or aluminum chloride,
  • a binder of zirconium fluoride especially in the form of ZrF 6 .
  • an organic dispersant such as mica.
  • the acid generator By means of the acid generator, it is possible to adjust the acid content and thus the pH of the release agent and thus to control the reaction rate and formation of the polymers. Preferably, a pH of 4 to 5 is set in the release agent.
  • the release agent By using the release agent, it is now possible to produce a coating according to claim 1.
  • structural parts and primary parts are contained in the release agent, which are applied by means of spraying or dipping of the functional component on the surface of the material of the functional component. It is also advantageous to incorporate sliding parts of the form boron nitride and / or magnesium aluminum silicate and / or molybdenum disulfide into the release agent.
  • the fractions of the structural parts lie between 80nm to 200nm of the primary parts between 2nm and 80nm and the sliding parts between 2 ⁇ m and 15 ⁇ m.
  • the advantage here is the gelatin, which forms nanoparticles on its own.
  • binder in a size proportion of up to 5 wt .-% are added to the release agent.
  • the structural parts are up to 10 wt .-%, the Primary parts of up to 3 wt .-% and the sliding parts in a proportion of up to 5 wt .-% added to the release agent.
  • the coating according to the invention is produced by first applying a release agent to the surface and then heating the functional component to a temperature of at least 200 ° C., so that a chemical bond is achieved of the fluoride with the base material and a polymerization of the binder takes place.
  • the heating is generated by means of a high-frequency electric field that, for example, is applied capacitively or inductively to the functional component.
  • Preferred frequency ranges for heating by means of a high-frequency electric field are in this case 100 kHz up to 10 MHz, wherein preferably about 4 MHz are used. With a heating at 4 MHz, this results in a penetration depth of the fluoride of 0.2 to 0.3 mm. It is thus produced a very good adhesion coating on the functional component.
  • the polymer chains serve on the one hand for the cohesion of the layer and on the other hand, they are advantageous because they grow under thermal stress and thus increase the elasticity of the layer. With cyclic thermal stress, therefore, no premature component failure occurs due to crack formation of the coating, since the coating according to the invention can elastically follow the expansions of the base material.
  • the inventive construction of the layer a temperature resistance can be achieved up to about 1300 0 C.
  • the fluoride binder systems used have a polymerization temperature of about 220 0 C and a glazing temperature of 83O 0 C.
  • the adhesion to the base material is hereby ensured even in almost glazed or vitrified state by the chemical bond to the base material. It is preferred, however, to ensure that the operating temperatures in the field of application of the functional components are below the glazing temperature, so that the coatings are elastic Range and thus in their coefficient of expansion similar to that of the base material.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Composite Materials (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Paints Or Removers (AREA)
  • Laminated Bodies (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Chemically Coating (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne un composant fonctionnel provenant d'un métal subissant une charge thermique et un phénomène d'érosion, dont une des surfaces est recouverte par un revêtement, ce dernier étant constitué d'une phase de liaison contenant un fluorure de zirconium et un matériau inséré dans ladite phase de liaison. L'invention concerne également un agent de démoulage destiné à produire ledit revêtement et un procédé pour appliquer ledit revêtement sur un composant fonctionnel.
EP07722820A 2006-03-07 2007-02-15 Revetement pour un composant fonctionnel subissant une charge thermique et un phénomène d'érosion Withdrawn EP1994203A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610010875 DE102006010875A1 (de) 2006-03-07 2006-03-07 Beschichtung eines thermisch und erosiv belasteten Funktionsbauteils
PCT/EP2007/001301 WO2007101529A1 (fr) 2006-03-07 2007-02-15 Revetement pour un composant fonctionnel subissant une charge thermique et un phénomène d'érosion

Publications (1)

Publication Number Publication Date
EP1994203A1 true EP1994203A1 (fr) 2008-11-26

Family

ID=38068460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07722820A Withdrawn EP1994203A1 (fr) 2006-03-07 2007-02-15 Revetement pour un composant fonctionnel subissant une charge thermique et un phénomène d'érosion

Country Status (8)

Country Link
US (1) US20090220773A1 (fr)
EP (1) EP1994203A1 (fr)
JP (1) JP5219845B2 (fr)
KR (1) KR20080111028A (fr)
CN (1) CN101501246A (fr)
BR (1) BRPI0708628A2 (fr)
DE (1) DE102006010875A1 (fr)
WO (1) WO2007101529A1 (fr)

Cited By (2)

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US10125424B2 (en) 2012-08-29 2018-11-13 Ppg Industries Ohio, Inc. Zirconium pretreatment compositions containing molybdenum, associated methods for treating metal substrates, and related coated metal substrates
US10400337B2 (en) 2012-08-29 2019-09-03 Ppg Industries Ohio, Inc. Zirconium pretreatment compositions containing lithium, associated methods for treating metal substrates, and related coated metal substrates

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CN109689933A (zh) 2016-08-24 2019-04-26 Ppg工业俄亥俄公司 用于处理金属基材的碱性组合物
US20190186281A1 (en) * 2017-12-20 2019-06-20 United Technologies Corporation Compressor abradable seal with improved solid lubricant retention
CN116715983A (zh) * 2023-06-19 2023-09-08 陕西科技大学 金属高温挤压成型用水性涂料、自润滑减磨涂层及制备方法

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10125424B2 (en) 2012-08-29 2018-11-13 Ppg Industries Ohio, Inc. Zirconium pretreatment compositions containing molybdenum, associated methods for treating metal substrates, and related coated metal substrates
US10400337B2 (en) 2012-08-29 2019-09-03 Ppg Industries Ohio, Inc. Zirconium pretreatment compositions containing lithium, associated methods for treating metal substrates, and related coated metal substrates
US10920324B2 (en) 2012-08-29 2021-02-16 Ppg Industries Ohio, Inc. Zirconium pretreatment compositions containing molybdenum, associated methods for treating metal substrates, and related coated metal substrates

Also Published As

Publication number Publication date
BRPI0708628A2 (pt) 2009-09-08
US20090220773A1 (en) 2009-09-03
KR20080111028A (ko) 2008-12-22
JP2009529097A (ja) 2009-08-13
CN101501246A (zh) 2009-08-05
DE102006010875A1 (de) 2007-09-13
JP5219845B2 (ja) 2013-06-26
WO2007101529A1 (fr) 2007-09-13

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