WO2017186218A1 - Procédé de revêtement à sec de substrats - Google Patents

Procédé de revêtement à sec de substrats Download PDF

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Publication number
WO2017186218A1
WO2017186218A1 PCT/DE2017/100303 DE2017100303W WO2017186218A1 WO 2017186218 A1 WO2017186218 A1 WO 2017186218A1 DE 2017100303 W DE2017100303 W DE 2017100303W WO 2017186218 A1 WO2017186218 A1 WO 2017186218A1
Authority
WO
WIPO (PCT)
Prior art keywords
powder
spray
carrier
ceramic
coating
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.)
Ceased
Application number
PCT/DE2017/100303
Other languages
German (de)
English (en)
Inventor
Benjamin JÄGER
Andy Vogel
Ute Pippardt
Robert Hoffmann
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of WO2017186218A1 publication Critical patent/WO2017186218A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/047—Discharge apparatus, e.g. electrostatic spray guns using tribo-charging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1683—Arrangements for supplying liquids or other fluent material specially adapted for particulate materials
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/4505—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application
    • C04B41/4545—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application applied as a powdery material
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/87—Ceramics
    • 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
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/02—Coating starting from inorganic powder by application of pressure only

Definitions

  • the invention relates to the production of catalytically or gas-separating layers on metallic or ceramic supports by dry coating.
  • the substrates to be coated are immersed in a sol or slurry. After a short residence time in the suspension, depending on the proportion of the open porosity of the support and the residence time in the suspension, a particle film forms on the surface.
  • the coated substrate is subsequently dried and sintered.
  • Advantages of the dip coating lie in the simple technological process and the formation of a uniform layer thickness.
  • a disadvantage is the relatively complicated Schlickeraufrung and the required relatively large Schlickervolumen.
  • the Schlickeransatz in addition to the solid powder also Amsterdamslust. Be liquefied and binders and dispersants are added to achieve sufficient long-term stability and to avoid sedimentation or segregation.
  • the production time is usually several hours. Overall, a relatively high development effort is required because the optimization of numerous influencing parameters is necessary.
  • a directed particle movement is generated in an electrophoresis cell by applying an electric field and the particles are deposited on the charged substrate by means of the electric field.
  • the direction of movement of the particles and thus the deposition on the anode or cathode is determined by their charge.
  • the particle velocity in the electric field is dependent on the particle size.
  • a layer often having a high packing density is formed, especially when multimodal distributions are present (S. Liu, Z.
  • Solids suspensions are also used for electrophoresis. In order to produce a homogeneous suspension with a low tendency to sediment with as few organic additives as possible, elaborate powder preparation and preparation is usually required, as in the previously mentioned methods. The geometry of the component or workpiece to be coated is largely free during electrophoresis. Significant disadvantage of this method is the one hand, the mandatory electrical conductivity of the substrate and on the other hand, the shipment into an electrophoresis cell containing a corresponding coating suspension. This suspension must be produced and optimized consuming.
  • planar substrates can be coated continuously, the overall process comprising the individual steps of slip production and slip preparation, film casting, drying, green film processing, debindering and sintering. Very uniform layers can be obtained here. Also in this method, the elaborate Schlickerher ein using numerous excipients is necessary. The coating is largely limited to planar substrates.
  • Screen printing allows the structured coating using a coating paste.
  • the advantage of this coating method is, in particular, the coating of comparatively complex substrate geometries without sharp contours and the application of laterally structured layers.
  • the coating of dense flat supports is possible, the no open porosity and thus do not act capillary suction on the paste or the suspension.
  • the grid-shaped structured and not completely closed pressure surface limits the scope of application of the layer for the construction of gas-separating membranes.
  • the screen printing process also requires the preparation and preparation of a corresponding screen printing paste with binders and dispersants. The preparation of the highly viscous suspension by repeated mixing operations followed by multiple rolls is also relatively expensive.
  • a method for producing catalytically active or gas-separating layers with a very low preparative effort is the dry coating by means of electrostatic application using appropriate generators that generate a corresponding high-voltage field.
  • This is a dry powder used, in principle, no additives such as solvents, binders or dispersants are needed.
  • the use of high-voltage generators can be omitted if the use of two powders of opposite polarity from two emission devices is possible (DE 196 36 234 C5), but this is unsuitable for the production of catalytically active or gas-separating layers due to foreign substance input.
  • the geometry of the component or workpiece is largely free. The powder particles move in the applied electric field towards the substrate to be coated.
  • the electrical properties of powder and substrate play an important role.
  • the resulting layer can be influenced in various ways.
  • a high electrical resistance of the powder slows down the discharge of the charges from the freshly applied layer.
  • z For example, the raw powder is often coated with an insulating material in order to achieve an improved static charge (EP 0 382 003 A2).
  • An offset with corresponding additives acts in a similar manner. As a result, however, the original powder surface is permanently covered, so that the properties are changed sustainably.
  • adhesives DE 197 26 778 A1
  • these adjuvants also changing the original powder properties immediately or at the latest when necessary for the removal of the adjuvant. Due to the introduction of foreign substances, especially the near-surface chemical composition is influenced, which can already lead to significant changes in catalysts.
  • a pretreatment or precoating of the workpiece or component to be coated is suitable (DE 25 51 837 A1, DE 10 2010 016 926 A1).
  • the deposited layer fulfills the function of a bonding agent, by first changing the surface properties of the substrate to be coated.
  • the charging of the powder particles has a dual function in the electrostatic coating. On the one hand, this reduces overspray, ie the proportion of particles that do not adhere to the surface of the substrate. On the other hand, the charge is responsible for the electrostatic adhesion of the particles on the substrate and for their fixation until sintering.
  • the charging can be done for example by means of a high voltage source (usually corona charging) by appropriate high voltage electrodes.
  • the electrostatic charging of the substrate can be carried out, for example, by dissipation of the charges arising on the applicator or by applying smaller voltages.
  • the powder to be applied by means of tribological-electrostatic charging via dry spray coating.
  • the particles are charged by turbulent flow and associated friction and impact processes in the spray channel of the applicator (DE 101 55 633 A1, DE 10 2006 019 643 B4).
  • the electrostatically assisted spray coating is used with tribocharging for plastic powders and varnishes or resins (WO 99/41323 A2). The movement of the powder particles does not take place strictly along the field lines of a high-voltage electric field as in the corona charging, but the particles are freely movable, since there are no aligned electrodes.
  • the electrostatically charged powder particles therefore move in the form of a powder cloud to the oppositely charged substrate and are attracted by this (including Coulomb attraction).
  • undercuts and complex shaped components can be uniformly coated, so that the geometry of the substrate to be coated is largely free.
  • electrostatically assisted dry spray coating can only be used to coat electrically conductive carrier materials or workpieces or components modified by additional layers, whereby pronounced insulating properties of the coating powder are required in each case or a correspondingly strong modification of the conductivity is required.
  • Non-correspondingly modified ceramic powders are generally regarded as not or poorly tribologically chargeable. Accordingly, the use of a high voltage source for charging such ceramic powder is state of the art of the technique. Their use in turn has a limiting effect on the coatable sample forms. In addition, the use of a high-voltage generator results in a much more complicated system construction and higher process and investment costs. In addition, there is an increased safety risk for the user due to the high voltage used.
  • the invention is based on the object catalytically or gas-separating layers of ceramic powder without displacement of the starting powder with excipients on metallic or ceramic supports so deposited that the surface morphology is suitable and optimizable for the particular application.
  • a coating of variable support shapes with minimal effort and with only a slight loss of powder to be made possible, the method should tolerate the use of different materials with greatly varying material properties.
  • this object is achieved in that a tribological charging of the ceramic powder is carried out within a Sprühorgans by means of a pressurized transport gas and a derivation of the applicator charge is carried on the carrier, so that adhesion of the ceramic powder is achieved as a layer on the support.
  • the electrostatic coating no pretreatment, no glazing and no charging of the carrier via an additional high voltage source required. This is not to be expected especially for carriers of low electrical conductivity, in particular not in combination with ceramic powders which contain no additives for adjusting their conductivity.
  • High voltage generators can be coated so free sample forms. This significantly reduces the security risk, as well as the process and investment costs. Pretreatment or adapted and optimized preparation of the powder to be sprayed takes place merely by adaptation of the powder properties, namely the particle sizes or particle size distributions. Addition of auxiliaries is typically not required.
  • ceramic powder with conductivities of> 0.05 S / cm is used in the process for the dry coating of metallic or ceramic supports, the ceramic powder being applied in dry form to the support by means of a spray element.
  • the support should have a conductivity of 200,000 to 0.01 S / cm.
  • the spray member has an at least partially made of PTFE spray channel, which is electrically conductively connected to the carrier. The spray channel is dimensioned such that powder throughputs of 10 to 10,000 g / h can be realized.
  • a sintering is finally carried out.
  • the coating takes place in a closed cabin, so that the excess, not adhered to the carrier ceramic powder can be sucked off and thus fed back to another coating process.
  • the distance between the sprayer and the support should be between 5 and 500 mm.
  • the carrier is freely positionable with respect to the spray member and can be raised, lowered or rotated during and / or before coating.
  • the coated carrier according to the invention is suitable for electrocatalytic applications for anodic oxygen evolution or for catalytic applications for the purification of process off-gases or for gas-separating applications for oxygen separation from air.
  • Fig. 1 shows an arrangement for carrying out the method according to the invention.
  • a carrier 1 is clamped in a device 2 and let into a cabin 3.
  • the carrier 1 can be varied in its immersion depth within the cabin 3 and additionally rotated by 360 °.
  • the coating takes place by means of a spray element 4, wherein the powder is introduced into a storage container 5.
  • a bellows 6 is designed so that the distance between Pulveraustrittsdüse and carrier 1 can be selectively varied. Non-adhering particles of the sprayed powder cloud are sucked out of the booth 3 via a guided air exchange and can be collected and sent for recycling.
  • the cabin 3 offers a corresponding protection against sprayed dusts.
  • a powder spray gun with a spray channel made of PTFE is used.
  • the determined electrical currents during the spraying process under tribological charging amount to at least 0.2 ⁇ , typically at least 1, 0 ⁇ , ideally at least about 1, 8-2.9 ⁇ , which is a powder charge of at least 0.3 ⁇ / g powder, typically at least 5 ⁇ / g powder and ideally at least 12 to 57 ⁇ / g powder and thus allows a dry coating by means of tribological charging.
  • the powder throughputs are between 72 and 792 g / h.
  • a ceramic powder of the molecular formula Bao, 5Sr 0 , 5Coo, 8Feo, 2O3-ö (about 250 g) with an average particle diameter (d 50 ) of about 3 ⁇ and a conductivity of the bulk material of 0.1 S / cm at Room temperature is presented in the reservoir 5 of the spray 4.
  • the metallic carrier 1 in the form of nickel-plated steel sheet is connected via an electrically conductive connection with the spray channel of the spray element 4 made of PTFE.
  • the necessary for the coating process powder-transport gas mixture is produced by means of compressed air with a pre-pressure of 3.5 bar in the spray 4.
  • the tribological charging of the powder particles takes place by friction as a result of a turbulent flow during the coating process in the PTFE spray channel of the spray 4.
  • the carrier 1 is coated with a powder throughput of about 380 g / h for about 1 s with a short spray.
  • the distance between carrier 1 and nozzle outlet is 350 mm.
  • the sintering of the applied powder particles takes place with the carrier 1.
  • the result is a firmly adhering, homogeneous layer with a loading of about 20 g / m 2 with high surface roughness, optimized for electrocatalytic applications for anodic oxygen evolution.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a ceramic powder of the empirical formula Bao, 5Sr 0 , 5Coo, 8Feo, 2O3-ö with a dso of about 3 ⁇ and a specific conductivity of the bulk material of 0.1 S / cm at Room temperature (about 250 g) is presented in the reservoir 5 of the spray 4.
  • the ceramic carrier 1 in the form of a cordierite-shaped body (50 ⁇ 25 mm) is connected via an electrically conductive connection with the spray channel of the spray element 4 made of PTFE.
  • the necessary powder-transport gas mixture is produced by means of compressed air with a pre-pressure of 3.5 bar in the spray 4.
  • the tribological charging of the powder particles takes place by friction due to a turbulent flow during the coating process in the PTFE spray channel of the spray 4.
  • the carrier 1 is coated with a powder throughput of 296 g / h for about 20 s with 5 sprays. Thereafter, the carrier 1 is rotated by means of the device 2 by 180 ° and coated once more with a powder throughput of 296 g / h for about 20 s with 5 sprays. The distance between carrier 1 and nozzle outlet is 70 mm. Following the coating process, the layer is baked on. The result is a firmly adhering, homogeneous layer with a loading of about 65 g / m 2 with high surface roughness, optimized for catalytic applications for the purification of process exhaust gases.
  • a ceramic powder of the empirical formula Co 3 O 4 with a dso of about 3 ⁇ and a conductivity of the bulk material of about 0.08 S / cm at room temperature (about 50 g) is placed in the reservoir 5 of the spray 4.
  • the ceramic carrier 1 in the form of a cordierite shaped honeycomb body (50 ⁇ 25 mm) is connected via an electrically conductive connection with the spray channel of the spray element 4 made of PTFE.
  • the necessary powder-transport gas mixture is produced by means of compressed air with a pre-pressure of 3.5 bar in the spray 4.
  • the tribological charging of the powder particles takes place by friction due to a turbulent flow during the coating process in the PTFE spray channel of the spray 4.
  • the carrier 1 is coated with a powder throughput of 296 g / h for about 20 s with 5 sprays. Thereafter, the carrier 1 is again rotated by means of the device 2 by 180 ° and coated once more with a powder throughput of 296 g / h for about 20 s with 5 sprays. The distance between carrier 1 and nozzle outlet is 70 mm. Following the coating process, the layer is baked on. The result is an adhesive, homogeneous layer with a mass of about 200 mg per molded honeycomb body with high surface roughness, optimized for catalytic applications for the purification of process exhaust gases.
  • a ceramic Zr-doped powder of the molecular formula Bao, 5Sro, 5Coo, 8Feo, 203-ö r (about 250 g) with a dso of about 3 ⁇ and a conductivity of the bulk material of 0.09 S / cm at room temperature presented in the reservoir 5 of the spray 4.
  • the ceramic support 1 in the form of a tube of Bao, 5Sr 0 , 5Coo, 8Feo, 2O3-ö (70 cm in length, 0.7 cm outer diameter) is connected via an electrically conductive connection with the spray channel of the spray element 4 consisting of PTFE.
  • the necessary powder-transport gas mixture is produced by means of compressed air with a pre-pressure of 3.5 bar in the spray 4.
  • the tribological charging of the powder particles takes place by friction due to a turbulent flow during the coating process in the PTFE spray channel of the spray 4.
  • the carrier 1 is coated with a powder throughput of about 295 g / h for about 7 s with 2 sprays. Thereafter, the carrier 1 is rotated again by means of the device 2 by 180 ° and coated once more with a powder throughput of 295 g / h for about 7 s with 2 sprays.
  • the distance between carrier 1 and nozzle is about 150 mm. Following the coating process, the layer is baked on.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Catalysts (AREA)

Abstract

L'invention concerne la réalisation de couches à effet catalytique et ou à effet de séparation de gaz sur des substrats métalliques ou céramiques, par un processus de revêtement à sec. L'invention a pour but de déposer des couches de poudre céramique sur des substrats métalliques ou céramiques (1), sans addition d'additifs aux poudres de départ, de telle manière que la morphologie de surface est appropriée et optimisable pour l'application correspondante. Selon l'invention, on atteint ce but en chargeant tribologiquement les poudres céramiques dans un organe de projection (4) et en dérivant la charge produite dans l'applicateur vers le substrat (1), de sorte à obtenir une adhérence de la poudre céramique sous forme de couche sur le substrat (1).
PCT/DE2017/100303 2016-04-29 2017-04-13 Procédé de revêtement à sec de substrats Ceased WO2017186218A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016107992.8A DE102016107992B4 (de) 2016-04-29 2016-04-29 Verfahren zur Trockenbeschichtung von Trägern
DE102016107992.8 2016-04-29

Publications (1)

Publication Number Publication Date
WO2017186218A1 true WO2017186218A1 (fr) 2017-11-02

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PCT/DE2017/100303 Ceased WO2017186218A1 (fr) 2016-04-29 2017-04-13 Procédé de revêtement à sec de substrats

Country Status (2)

Country Link
DE (1) DE102016107992B4 (fr)
WO (1) WO2017186218A1 (fr)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2551837A1 (de) 1975-08-06 1977-02-24 Hoechst Sara Spa Verfahren zur pulverbeschichtung von keramik
DE2756009A1 (de) * 1976-05-19 1979-06-28 Coors Container Co Pistole zur reibungselektrischen aufladung von pulver
US4873114A (en) * 1979-02-15 1989-10-10 Foseco International Limited Coating expendable substrates which contact molten metal
EP0382003A2 (fr) 1989-02-07 1990-08-16 BAYER ITALIA S.p.A. Poudre céramique pour poudrage électrostatique et procédé pour sa fabrication
DE19726778A1 (de) 1997-06-24 1999-01-14 Cerdec Ag Verfahren zur Herstellung keramischer und glasiger Beschichtungen, elektrostatisch applizierbares Beschichtungspulver hierfür und seine Verwendung
WO1999041323A2 (fr) 1998-02-17 1999-08-19 E.I. Du Pont De Nemours And Company, Inc. Procede de realisation de couches de poudre
EP0667889B1 (fr) 1992-11-06 2002-01-23 International Coatings Limited Compositions de revetements en poudre et leurs utilisations
DE10155633A1 (de) 2001-11-13 2003-05-22 Nordson Corp Triboelektrische Pulversprühpistole und Triboelektrisches Verfahren zum Beschichten eines Gegenstandes
DE19636234C5 (de) 1996-09-06 2005-02-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur elektrostatischen Beschichtung von Substraten
US6915964B2 (en) 2001-04-24 2005-07-12 Innovative Technology, Inc. System and process for solid-state deposition and consolidation of high velocity powder particles using thermal plastic deformation
DE102006019643B4 (de) 2006-04-25 2008-09-25 Reinhold Gregarek Vorrichtung zur pneumatischen, tribostatischen Pulverbeschichtung von Werkstücken
DE102010016926A1 (de) 2009-05-16 2010-12-30 Eichler Gmbh & Co.Kg Verfahren und Beschichtungsanlage zur elektrostatischen Lackierung (Pulverbeschichtung) von elektrisch nicht leitenden Teilen

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2551837A1 (de) 1975-08-06 1977-02-24 Hoechst Sara Spa Verfahren zur pulverbeschichtung von keramik
DE2756009A1 (de) * 1976-05-19 1979-06-28 Coors Container Co Pistole zur reibungselektrischen aufladung von pulver
US4873114A (en) * 1979-02-15 1989-10-10 Foseco International Limited Coating expendable substrates which contact molten metal
EP0382003A2 (fr) 1989-02-07 1990-08-16 BAYER ITALIA S.p.A. Poudre céramique pour poudrage électrostatique et procédé pour sa fabrication
EP0667889B1 (fr) 1992-11-06 2002-01-23 International Coatings Limited Compositions de revetements en poudre et leurs utilisations
DE19636234C5 (de) 1996-09-06 2005-02-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur elektrostatischen Beschichtung von Substraten
DE19726778A1 (de) 1997-06-24 1999-01-14 Cerdec Ag Verfahren zur Herstellung keramischer und glasiger Beschichtungen, elektrostatisch applizierbares Beschichtungspulver hierfür und seine Verwendung
WO1999041323A2 (fr) 1998-02-17 1999-08-19 E.I. Du Pont De Nemours And Company, Inc. Procede de realisation de couches de poudre
US6915964B2 (en) 2001-04-24 2005-07-12 Innovative Technology, Inc. System and process for solid-state deposition and consolidation of high velocity powder particles using thermal plastic deformation
DE10155633A1 (de) 2001-11-13 2003-05-22 Nordson Corp Triboelektrische Pulversprühpistole und Triboelektrisches Verfahren zum Beschichten eines Gegenstandes
DE102006019643B4 (de) 2006-04-25 2008-09-25 Reinhold Gregarek Vorrichtung zur pneumatischen, tribostatischen Pulverbeschichtung von Werkstücken
DE102010016926A1 (de) 2009-05-16 2010-12-30 Eichler Gmbh & Co.Kg Verfahren und Beschichtungsanlage zur elektrostatischen Lackierung (Pulverbeschichtung) von elektrisch nicht leitenden Teilen

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
C. J. BRINKER; G. W. SCHERER: "Sol-gel science: the physics and chemistry of sol-gel processing", 1990, ACADEMIC PRESS, INC.
S. LIU; Z. HA: "Prediction of random packing limit for multimodal particle mixtures", POWDER TECHNOLOGY, vol. 126, 2002, pages 283 - 296

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Publication number Publication date
DE102016107992A1 (de) 2017-11-02
DE102016107992B4 (de) 2018-05-17

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