# US 10,865,481 B2 · Coatings for turbine parts > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,865,481 B2 - Document ID: US10865481B2 - Status: Granted - Kind: B2 - Application number: 15/046,533 - Filed: 2016-02-18 - Published: 2016-06-09 - Granted: 2020-12-15 - Earliest claimed: 2012-12-20 - Assignees: General Electric Technology GmbH - Applicants: General Electric Technology GmbH - Inventors: Thomas Widmer; Sven Olliges; Alexander Stankowski; Piero-Daniele Grasso; Mauro Melas; Thomas Baumann - Web page: https://patentgrep.com/patent/US10865481B2 ## CPC - C23C 18/54: Contact plating, i.e. electroless electrochemical plating - C09D 183/04: Polysiloxanes - C23C 18/1662: {Use of incorporated material in the solution or dispersion, e.g. particles, whiskers, wires} - C23C 18/1692: {Heat-treatment} - C23C 28/027: {including at least one metal matrix material comprising a mixture of at least two metals or metal phases or metal matrix composites, e.g. metal matrix with embedded inorganic hard particles, CERMET, MMC.} - C23C 30/00: Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process (C23C26/00, C23C28/00 take precedence) - C25D 5/50: by heat-treatment - C25D 15/00: Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires - F01D 5/288: {Protective coatings for blades} - C23C 18/36: using hypophosphites - C25D 3/12: of nickel or cobalt - F05D 2230/31: Layer deposition - F05D 2230/80: Repairing, retrofitting or upgrading methods - Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft - Y10T 428/31663: As siloxane, silicone or silane - 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 (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) - 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 (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A method and a turbine part having a coating with a matrix layer that includes a high temperature resistant hydrophobic polysiloxane filler, wherein the coating has superior mechanical strength and temperature resistance. ## Claims ### Claim 1 A method for coating a part for an axially rotating machine with an erosion resilient coating, the method comprising: providing a part of an axially rotating machine; coating the part with a coating comprising a metal matrix having an embedded polysiloxane filler distributed throughout a thickness of the metal matrix; and stoving the part with the coating employing a controlled process to tailor at least one of a temperature resistance and hydrophobic property of the polysiloxane filler, the controlled process employing a temperature that varies and is selected based at least in part on a required end use of the coating, a specific composition and form of the polysiloxane filler, and a presence of any catalytic substances; wherein the controlled process employs a temperature selected such that controlled partial pyrolysis results in successive replacement of carbon containing end groups with oxygen to form SiO2, yielding an increase in the ceramic (SiO2) to organic ratio of the polysiloxane filler to affect temperature resistance and hydrophobicity. ### Claim 2 (depends on 1) The method of claim 1 wherein the method of coating includes electrolytic nickel plating and/or electroless chemical coating. ### Claim 3 (depends on 1) The method of claim 1 wherein the method of coating comprises electrolytic nickel plating. ### Claim 4 (depends on 1) The method of claim 1 wherein the method of coating comprises electroless chemical coating. ### Claim 5 (depends on 1) The method of claim 1 wherein the coating the part with the coating results in a coating comprising an outer layer and an inner layer, the inner layer configured to be between the axially rotating machine part and the outer layer. ### Claim 6 (depends on 5) The method of claim 5 wherein the outer layer has the metal matrix comprising the polysiloxane filler distributed throughout an entire thickness of the outer layer. ### Claim 7 (depends on 6) The method of claim 6 wherein prior to coating the part with a coating comprising a metal matrix having an embedded polysiloxane filler, coating the part with a corrosion resistant layer that does not have any of the polysiloxane filler such that the polysiloxane filler is only within the outer layer of the coating. ### Claim 8 (depends on 7) The method of claim 7 wherein the controlled process further including ensuring that the polysiloxane filler undergoes controlled partial pyrolysis such that the polysiloxane filler includes polymeric hydrophobic filler particles operative to withstand temperatures exceeding 400° C. ### Claim 9 (depends on 1) The method of claim 1 wherein the controlled process further including ensuring that the polysiloxane filler undergoes controlled partial pyrolysis such that the polysiloxane filler includes polymeric hydrophobic filler particles operative to withstand temperatures exceeding 400° C. ### Claim 10 (depends on 1) The method of claim 1 wherein the metal matrix comprises Nickel or alloys thereof. ### Claim 11 (depends on 1) The method of claim 1 wherein the polysiloxane filler has a form of particles. ### Claim 12 (depends on 11) The method of claim 11 wherein the particles have a size distribution as measured by laser diffraction of d10=0.37 micrometers, D50=1.07 micrometers and D90=2.31 micrometers. ### Claim 13 (depends on 11) The method of claim 11 further including distributing the particles homogenously throughout a thickness of the coating. ### Claim 14 (depends on 1) The method of claim 1 wherein the polysiloxane filler comprises between 5 volume % to 50 volume % of the coating. ### Claim 15 (depends on 1) The method of claim 1 wherein the polysiloxane filler comprises between 25 volume % to 45 volume % of the coating. ### Claim 16 (depends on 1) The method of claim 1 wherein the polysiloxane filler comprises between 35 volume % to 45 volume % of the coating. ### Claim 17 (depends on 1) The method of claim 1 wherein the polysiloxane filler includes hydrophobic filler particles, wherein the filler particles are at least one of fibrous, flakes, platelet shaped, and spherical shaped. ### Claim 18 A method for coating a part for an axially rotating machine with an erosion resilient coating, the method comprising: providing a part of an axially rotating machine; coating the part with a coating comprising a metal matrix having an embedded polysiloxane filler distributed throughout a thickness of the metal matrix; and stoving the part with the coating employing a controlled process to tailor a temperature resistance and hydrophobic property of the polysiloxane filler, the controlled process employing a temperature that varies and is selected based at least in part on a required end use of the coating, a specific composition and form of the polysiloxane filler, and a presence of any catalytic substances; wherein the controlled process employs a temperature selected such that controlled partial pyrolysis results in successive replacement of carbon containing end groups with oxygen to form SiO2, yielding an increase in the ceramic (SiO2) to organic ratio of the polysiloxane filler to affect temperature resistance and hydrophobicity.