PLATED POLYMER COMPONENTS FOR A GAS TURBINE ENGINE

Plated polymeric gas turbine engine parts and methods for fabricating lightweight plated polymeric gas turbine engine parts are disclosed. The parts include a polymeric substrate plated with one or more metal layers. The polymeric material of the polymeric substrate may be structurally reinforced with materials that may include carbon, metal, or glass. The polymeric substrate may also include a plurality of layers to form a composite layup structure.

MANUFACTURE OF CASTING CORES

A method for forming an investment casting core comprises cutting a patterned core precursor from refractory metal-based sheet. The cutting forms recast along the cuts. An oxide is grown on non-recast areas. The recast is substantially chemically removed but substantially leaving the oxide. The core precursor may then be shaped.

Repair of braze joint and article repaired

A method of repairing a braze joint and the resulting joint includes removing an unsuitable portion of a first joining material in a joint between a first member and a second member of an aerospace assembly and cleaning the joint. A stripping solution is used to remove the unsuitable portion of the first joining material. A first cleaning solution is used to clean the joint, and the joint is further cleaned using a second cleaning solution. During a rebrazing step, a second joining material moves into a void left by the removed unsuitable portion from the removal step to form a new joint between the first member and the second member that includes the remaining first joining material and the second joining material.

Composite Articles and Methods

An article comprises: a substrate having a matrix and a plurality of metallic members partially embedded in the matrix; and a metallic layer bonded to exposed portions of the metallic members.

METHOD FOR PLATING METALLIC SUBSTRATE WITH CORROSION-RESISTIVE COAT FOR STRUCTURAL BONDING COUPLING

PURPOSE: A method for plating metallic substrate with corrosion-resistive coat for structural bonding coupling is provided to obtain an excellent corrosion resistance and to prevent the metallic substrate from being delaminated. CONSTITUTION: A phosphoric acid anodizing solution is provided. A metal substrate is anodized in the phosphoric acid anodizing solution. A trivalent chromium containing acidic coating solution is provided. The anodized metal substrate contacts the acidic coating solution for forming a trivalent chromium-containing coating on the anodized metal substrate. The phosphoric acid anodizing solution has a phosphoric acid concentration of between 3% by weight to 20% by weight. The trivalent chromium containing acidic coating solution comprises a water soluble trivalent chromium compound, a water soluble fluoride compound and an alkaline reagent. © KIPO 2004 ...

Non-oxidizable coating

A substrate is coated by applying an essentially pure aluminum first layer to a surface of the substrate. At least a first portion of the first layer is oxidized so as to provide a protective coating of desired properties. The substrate may be a refractory metal-based investment casting core.

Method for casting core removal

To destructively remove a casting core from a cast part, the part is exposed to a combination of nitric acid and sulfuric acid. The combination may have, by volume, a nitric acid concentration of 4-20 times the sulfuric acid concentration. The combination may be an aqueous solution including, by volume, 40-60% nitric acid and 3-10% sulfuric acid. The method may remove a ceramic casting core and a refractory metal-based casting core. A first leaching step may remove a major portion of the ceramic casting core and may comprise alkaline leaching. A second leaching step may remove a major portion of the refractory metal-based casting core and may comprise acid leaching. The acid leaching may comprise the combination of nitric acid and sulfuric acid.

Non-oxidizable coating

A substrate is coated by applying an essentially pure aluminum first layer to a surface of the substrate. At least a first portion of the first layer is oxidized so as to provide a protective coating of desired properties. The substrate may be a refractory metal-based investment casting core.

IN-SITU BALANCING OF PLATED POLYMERS

A method for balancing a rotatable component is disclosed This method comprises and then plating the component to deposit a metal layer onto the component until the component is balanced. In addition, and alternative method for balancing a rotatable component is disclosed. This method comprises attaching a balancing weight to the rotatable component and rotating the component. This is followed by plating the component and the balancing weight to deposit a metal layer onto the balancing weight and the component until the component is balanced. 1. A method for balancing a rotatable component , the method comprising:rotating the component; andplating the component to deposit a metal layer onto the component until the component is balanced.2. The method of wherein the plating is selected from the group consisting of brush plating and brush electroplating.3. The method of wherein the brush plating comprises a brush saturated with plating solution.4. The method of wherein the brush is selected from the group consisting of stainless steel or graphite.5. The method of wherein the brush is further wrapped with a cloth material that holds the plating solution and prevents direct contact with the part being plated.6. The method of wherein the brush electroplating comprises a brush saturated with plating solution.7. The method of wherein the brush is selected from the group consisting of stainless steel or graphite.8. The method of wherein the brush is further wrapped with a cloth material that holds the plating solution and prevents direct contact with the part being plated.9. A method for balancing a rotatable component claim 7 , the method comprising:attaching a balancing weight to the rotatable component;rotating the component; andplating the component and the balancing weight to deposit a metal layer onto the balancing weight and the component until the component is balanced.10. The method of wherein the plating is selected from the group consisting of brush plating and ...

Trivalent Chromium Conversion Coating Pre-Coating Treatment

In a method for coating a copper-containing aluminum alloy, the alloy is treated with a solution of at least one polyamino carboxylic acid ligand. A trivalent chromium coating is thereafter applied. 2. (canceled)3. The method of wherein:the solution comprises or consists essentially of an EDTA solution.4. The method of wherein:the alloy is cleaned prior to the treating; andthe treated alloy is coated with said trivalent chromium coating as a trivalent chromium-phosphate (TCRP) chemical conversion coating.5. The method of wherein:the solution has an EDTA concentration of 200-2000 ppm.6. The method of wherein:the treating comprises immersion for at least five minutes.7. The method of wherein:the immersion is 5-30 minutes.8. The method of wherein:the treating is equivalent to at least ten minutes immersion with the solution at 500 ppm.9. The method of wherein:the aluminum alloy has at least 3.0% copper, by weight.10. The method of further comprising:prior to the treating, cleaning the alloy via mechanical abrading.11. The method of wherein:the applying involves contacting with a coating solution for total contact time of fifteen to thirty minutes.12. The method of further comprising:a chemical deoxidizing prior to the treating.13. An article coated by the process of .15. The method of wherein:the aluminum alloy has at least 3.0% copper, by weight.16. The method of wherein:the treating is equivalent to at least ten minutes immersion with the solution at 500 ppm.17. The method of wherein:the treating is equivalent to at least ten minutes immersion with the solution at 500 ppm.18. A method for coating a copper-containing aluminum alloy claim 14 , the method comprising:chemical deoxidizing;after the chemical deoxidizing, treating the alloy with a solution of at least one polyamino carboxylic acid ligand; andapplying a trivalent chromium coating.19. The method of wherein:the aluminum alloy has at least 3.0% copper, by weight.20. The method of wherein:the treating is ...

NON-OXIDIZABLE COATING

A substrate is coated by applying an essentially pure aluminum first layer to a surface of the substrate. At least a first portion of the first layer is oxidized so as to provide a protective coating of desired properties. The substrate may be a refractory metal-based investment casting core.

Method for casting core removal

To destructively remove a refractory metal casting core from a cast part the part is exposed to a combination of nitric acid and sulfuric acid.

HARD ANODIZE OF COLD SPRAY ALUMINUM LAYER

A process for repairing components includes the steps of providing a component having an affected area on a surface of a component to be repaired; depositing a repair material over the affected area on the surface of the component so that the repair material plastically deforms without melting and bonds to the affected area upon impact with the affected area and thereby covers the affected area; providing a sulfuric acid based anodizing solution; anodizing a deposited repair material on the surface of said component in the sulfuric acid based anodizing solution; consuming only a portion of the deposited repair material to form a hard anodized coating layer upon the deposited repair material to form a hard anodized coated component; providing a corrosion resistant sealant solution; and contacting a hard anodized coated component with the corrosion resistant sealant solution to form a corrosion resistant sealant coating on the hard anodized coated component.

CERAMIC-ENCAPSULATED THERMOPOLYMER PATTERN OR SUPPORT WITH METALLIC PLATING

A method for fabricating a ceramic component is disclosed. The method may comprise: 1) forming a polymer template having a shape that is an inverse of a shape of the ceramic component, 2) placing the polymer template in a mold; 3) injecting the polymer template with a ceramic slurry, 4) firing the ceramic slurry at a temperature to produce a green body, and 5) sintering the green body at an elevated temperature to provide the ceramic component. 1. A method for fabricating a ceramic component , comprising:forming a polymer template having a shape that is an inverse of a shape of the ceramic component;placing the polymer template in a mold;injecting the mold with a ceramic slurry;firing the ceramic slurry at a temperature to produce a green body; andsintering the green body at an elevated temperature to provide the ceramic component.2. The method of claim 1 , wherein the polymer template comprises voids that are devoid of polymeric material where walls are desired in the ceramic component claim 1 , and filled regions that are filled with the polymeric material where open spaces are desired in the ceramic component.3. The method of claim 2 , wherein sintering the green body at an elevated temperature comprises volatilizing the polymer template.4. The method of claim 2 , further comprising coating a surface of the ceramic component with a metal plating.5. The method of claim 2 , wherein injecting the mold with the ceramic slurry comprises infiltrating the voids with the ceramic slurry.6. The method of claim 2 , wherein injecting the mold with the ceramic slurry comprises encapsulating the polymer template in the ceramic slurry.7. The method of claim 2 , wherein injecting the mold with the ceramic slurry comprises:infiltrating the voids with the ceramic slurry; andencapsulating the polymer template in the ceramic slurry.8. The method of claim 7 , wherein the polymer template is formed from a thermoplastic material selected from the group consisting of high density ...

Method for Casting Core Removal

To destructively remove a refractory metal casting core from a cast part the part is exposed to a combination of nitric acid and sulfuric acid.

Corrosion resistant surface treatment for structural adhesive bonding to metal

A metal substrate is anodized in a phosphoric acid anodizing solution. The anodized metal substrate is thereafter contacted with a hexavalent chromium free, trivalent chromium containing acid solution to coat the anodized metal substrate. The coated anodized metal substrate can be adhesively bonded to another such treated metal substrate to form a composite article. The resulting article exhibits excellent bonding and corrosion properties.

BRUSH PLATING REPAIR METHOD FOR PLATED POLYMERS

Methods for repairing plated metallic layers on plated polymeric parts are disclosed. First, a polymer is formed into an article of a desired shape or geometry. The outer surface of the article is prepared to receive a catalyst and then the outer surface is activated with the catalyst. A first metallic layer is then plated onto the outer surface to form a structure. Optional additional metallic layers may be applied. Then, a defect in a damaged metal layer is repaired by brush plating or brush electroplating. 1. A method for repairing a plated polymer part having a damaged metal layer , the method comprising:plating a damaged metal layer until a new metal layer of desired thickness has been deposited onto the damaged metal layer.2. The method of wherein the plating is selected from the group consisting of brush plating and brush electroplating.3. A method for repairing a metal part having a damaged metal layer claim 1 , the method comprising:forming a polymer into a desired shape having an outer surface;preparing the outer surface to receive a catalyst;activating the outer surface with the catalyst;plating a first metal layer onto the outer surface and the catalyst to form a first metal layer to form a structure;plating a second metal layer onto the structure; andrepairing a defect in a metal layer until a new metal layer of desired thickness has been deposited onto the damaged metal layer.4. The method of wherein the repairing a defect is selected from the group consisting of brush plating and brush electroplating.5. The method of further including depositing a third metal onto the structure.6. The method of further including alloying the first and second layers.7. The method of further including alloying the first claim 5 , second and third layers.8. The method of wherein the alloying is a process selected from the group consisting of transient liquid phase (TLP) bonding claim 6 , brazing claim 6 , diffusion bonding claim 6 , heat treating claim 6 , and ...

Repair of braze joint and article repaired

A method of repairing a braze joint and the resulting joint includes removing an unsuitable portion of a first joining material in a joint between a first member and a second member of an aerospace assembly and cleaning the joint. A stripping solution is used to remove the unsuitable portion of the first joining material. A first cleaning solution is used to clean the joint, and the joint is further cleaned using a second cleaning solution. During a rebrazing step, a second joining material moves into a void left by the removed unsuitable portion from the removal step to form a new joint between the first member and the second member that includes the remaining first joining material and the second joining material.

Non-destructive inspection method for metallic alloys

A non-destructive inspection method for detecting the presence of a contaminant that has alloyed with a metallic alloy of a part includes exposing the metallic alloy of the part to an extraction solution. The extraction solution extracts at least a portion of any of the contaminant that has alloyed with the metallic alloy. The extraction solution can then be analyzed to determine whether the solution includes any of the contaminant element, which indicates whether the part includes any of the contaminant element.

ELECTROFORMED CONFORMING RUBSTRIP

A disk made of a first material has a groove in which a blade made of a second material is retained. A strip is placed between the blade and the disk to minimize rubbing damage to the blade and the disk and an insulating material is place between the rub strip and the blade for minimizing damaging responses of the blade to galvanic forces created by rubbing of the first material and the second material.

Electroformed conforming rubstrip

A disk made of a first material has a groove in which a blade made of a second material is retained. A strip is placed between the blade and the disk to minimize rubbing damage to the blade and the disk and an insulating material is place between the rub strip and the blade for minimizing damaging responses of the blade to galvanic forces created by rubbing of the first material and the second material.

Method for casting core removal

To destructively remove a refractory metal casting core from a cast part the part is exposed to a combination of nitric acid and sulfuric acid.

Manufacture of casting cores

A method for forming an investment casting core comprises cutting a patterned core precursor from refractory metal-based sheet. The cutting forms recast along the cuts. An oxide is grown on non-recast areas. The recast is substantially chemically removed but substantially leaving the oxide. The core precursor may then be shaped.

Thermal barrier coating having improved durability and method of providing the coating

A method is disclosed for providing a TBC system including grooves or other features between the bond coat/substrate and the ceramic thermally insulating layer. The features are initially provided by selectively removing material to define the features, for example by laser. Any disturbed surface layer, e.g., re-cast material in the case of a laser or plastically worked material in the case of machining, is then chemically removed, leaving the remaining material with a microstructure of a more uniform geometry, and free of disturbed material. The ceramic layer is then applied. TBC systems using the method show improved durability, with lives up to 4x longer than prior TBC systems.

Non-oxidizable coating

A substrate is coated by applying an essentially pure aluminum first layer to a surface of the substrate. At least a first portion of the first layer is oxidized so as to provide a protective coating of desired properties. The substrate may be a refractory metal-based investment casting core.

Stability additive for trivalent chrome conversion coating bath solutions

An acidic aqueous solution containing a water soluble trivalent chromium compound is provided with a solution stability additive for reducing precipitation of trivalent chromium over time. The concentration of the solution stability additive varies based on the complexing capability of the additive. Suitable additives for use as solution stability additives in accordance with the present invention are selected from the group consisting of acetic acid, glycolic acid, and mixtures thereof.

Non-oxidizable coating

A substrate is coated by applying an essentially pure aluminum first layer to a surface of the substrate. At least a first portion of the first layer is oxidized so as to provide a protective coating of desired properties. The substrate may be a refractory metal-based investment casting core.

ELECTRICAL DISCHARGE MACHINING SYSTEM INCLUDING IN-SITU TOOL ELECTRODE

An additive manufactured workpiece includes one or more cavities having an inner surface. A dielectric interface is formed in the cavity, and conforms to the inner surface. The additive manufactured workpiece further includes an in-situ electrode in the cavities. The dielectric interface is interposed between the in-situ electrode and the inner surface of the workpiece. 1. An additive manufactured workpiece comprising:at least one cavity having an inner surface;a dielectric interface in the cavity and conforming to the inner surface; andan in-situ electrode in the at least one cavity,wherein the dielectric interface is interposed between the in-situ electrode and the inner surface of the workpiece.2. The additive manufactured workpiece of claim 1 , wherein the in-situ electrode comprises a graphite material.3. The additive manufactured workpiece of claim 2 , wherein the graphite material is a pressurized graphite powder.4. The additive manufactured workpiece of claim 3 , wherein dielectric interface comprises a porous film that lines the inner surface claim 3 , the porous film containing a dielectric fluid.5. The additive manufactured workpiece of claim 4 , wherein the dielectric fluid includes a fluid that contains a dielectric material is selected from a group comprising of a liquid hydrocarbon claim 4 , a silicone oil claim 4 , ethylene glycol claim 4 , propylene glycol claim 4 , polyethylene glycol claim 4 , glycerol claim 4 , and deionized water.6. The additive manufactured workpiece of claim 5 , wherein the fluid-swelling porous film is composed of a polymer material selected from a group comprising of hydrophobic polymers claim 5 , hydrophilic polymers claim 5 , and polymer gels. This application is a division of U.S. application Ser. No. 15/802,312, filed Nov. 2, 2017, the contents of which are hereby incorporated by reference in its entirety.Exemplary embodiments pertain to the art of structure component fabrication, and more particularly, to electrical ...

WEAR RESISTANT COATING, METHOD OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME

An abrasive coating for a substrate comprises a strike layer is formed on a substrate top surface; a base layer is coupled to the strike layer; a tack layer is coupled to the base layer, wherein the tack layer is configured to adhere first grit particles to the base layer; a plurality of first grit particles are adapted to be coupled to the tack layer, a plurality of second grit particles are placed between each of the plurality of first grit particles, the second grit particles having a nominal size smaller than the first grit particles; and an overplate layer comprising a matrix material is bonded to the tack layer; the matrix material envelops the second grit particles and bonds and partially surrounds the first grit particles, wherein the first grit particles extend above the overplate layer. 1. An abrasive coating for a substrate , comprising:a top surface formed on said substrate;a strike layer formed on said top surface;a base layer coupled to said strike layer;a tack layer coupled to said base layer;a plurality of first grit particles coupled to said tack layer, wherein said plurality of first grit particles are spaced apart to form channels;a plurality of second grit particles ranging in size from 0.0005 to about 0.002 mm placed between each of said plurality of first grit particles, said second grit particles having a nominal size smaller than said first grit particles; andan overplate layer comprising a matrix material coupled to said tack layer; said matrix material envelops said second grit particles and said matrix material bonds to and partially surrounds said first grit particles, wherein said first grit particles extend above said overplate layer.2. The coating according to claim 1 , wherein said first grit particles are selected from the group consisting of a cubic boron nitride material claim 1 , coated silicon carbide (SiC) claim 1 , aluminum oxide claim 1 , and diamond.3. The coating according to claim 1 , wherein said matrix material comprises ...

Electrical discharge machining system including in-situ tool electrode

An additive manufactured workpiece includes one or more cavities having an inner surface. A dielectric interface is formed in the cavity, and conforms to the inner surface. The additive manufactured workpiece further includes an in-situ electrode in the cavities. The dielectric interface is interposed between the in-situ electrode and the inner surface of the workpiece.

Composite Articles and Methods

An article comprises: a substrate having a matrix and a plurality of metallic members partially embedded in the matrix; and a metallic layer bonded to exposed portions of the metallic members. 1. An article comprising:a substrate having a matrix and a plurality of metallic members partially embedded in the matrix; anda metallic layer bonded to exposed portions of the metallic members.2. The article of wherein:the matrix is a thermoplastic material forming a majority of the substrate by weight.3. The article of wherein:the matrix is a matrix of a composite material, the composite material further comprising non-metallic fibers, the matrix and the non-metallic fibers forming a majority of the substrate by weight.4. The article of wherein:the metallic members comprise fibers.5. The article of wherein:the exposed portions protrude from a surface of the matrix.6. The article of wherein:the metallic layer comprises a plated nickel or nickel alloy.7. The article of wherein:the metallic layer has a thickness of 0.001 inch to 0.020 inch (0.025 mm to 0.51 mm).8. The article of further comprising: ceramics;', 'metallic materials; and', 'elastomeric materials., 'one or more additional layers selected from the group consisting of9. The article of being a duct.10. The article of being a strut.11. The article of being an airfoil element.12. The article of being a blade.13. The article of being a vane or strut having:a platform;a shroud; andthe airfoil extending between the platform and the shroud.14. A method for manufacturing the article of claim 1 , the method comprising:providing the substrate with the metallic members embedded therein; andprocessing the substrate to expose or further expose the metallic members.15. The method of further comprising:after the processing, applying the metallic layer.16. The method of further comprising:after applying the metallic layer, applying one or more further layers.17. The method of wherein: ceramics;', 'metallic materials; and', ' ...

WEAR RESISTANT COATING, METHOD OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME

An abrasive coating for a substrate comprises a strike layer is formed on a substrate top surface; a base layer is coupled to the strike layer; a tack layer is coupled to the base layer, wherein the tack layer is configured to adhere first grit particles to the base layer; a plurality of first grit particles are adapted to be coupled to the tack layer, a plurality of second grit particles are placed between each of the plurality of first grit particles, the second grit particles having a nominal size smaller than the first grit particles; and an overplate layer comprising a matrix material is bonded to the tack layer; the matrix material envelops the second grit particles and bonds and partially surrounds the first grit particles, wherein the first grit particles extend above the overplate layer. 1. An abrasive coating for a substrate , comprising:a top surface formed on said substrate;a strike layer formed on said top surface;a base layer coupled to said strike layer;a tack layer coupled to said base layer;a plurality of first grit particles coupled to said tack layer, wherein said plurality of first grit particles are spaced apart to form channels;a plurality of second grit particles placed between each of said plurality of first grit particles, said second grit particles having a nominal size smaller than said first grit particles; andan overplate layer comprising a matrix material coupled to said tack layer; said matrix material envelops said second grit particles and said matrix material bonds to and partially surrounds said first grit particles, wherein said first grit particles extend above said overplate layer.2. The coating according to claim 1 , wherein said first grit particles are selected from the group consisting of a cubic boron nitride material claim 1 , coated silicon carbide (SiC) claim 1 , aluminum oxide claim 1 , and diamond.3. The coating according to claim 1 , wherein said matrix material comprises a matrix formed from at least one of Ni claim ...

Article surface finishing method

Manufacturing methods are disclosed that can electropolish a metal surface by disposing an electrode over the metal surface, and a permeable dielectric spacer between the metal surface and the electrode. An electrolyte is infiltrated into the permeable dielectric spacer, and an electrical voltage differential is applied to the electrode and the metal surface.

EROSION AND WEAR PROTECTION FOR COMPOSITES AND PLATED POLYMERS

A composite component and a plated polymer component are disclosed. The composite component may comprise a body portion formed from an organic matrix composite, a first metal coating applied to a surface of the body portion, and an outer metal layer on the first metal coating that is erosion-resistant. The plated polymer component may comprise a polymer substrate, a metal plating layer applied to a surface of the polymer substrate, and at least one selectively thickened region in the metal plating layer. The at least one selectively thickened region may assist in protecting the plated polymer component against wear and/or erosion. 1. A composite component , comprising:a body portion formed from an organic matrix composite;a first metal coating applied to a surface of the body portion, the first metal coating being formed from aluminum or an aluminum alloy; andan outer metal layer on the first metal coating.2. The composite component of claim 1 , wherein the organic matrix composite consists of an organic matrix and reinforcement fibers.3. The composite component of claim 2 , wherein the outer metal layer is a passive aluminum oxide layer formed by anodizing a surface of the first metal coating.4. The composite component of claim 2 , wherein the outer metal layer is a titanium dioxide coating.5. The composite component of claim 4 , wherein the titanium dioxide coating is applied to a surface of the first metal coating by electrolytic deposition.6. The composite component of claim 2 , wherein the outer metal layer is a metal plating layer.7. The composite component of claim 6 , further comprising a sacrificial layer between the first metal coating and the metal plating layer claim 6 , the sacrificial layer being formed from a metallic material that is more anodic than a metal composition of the first metal coating.8. The composite component of claim 7 , wherein the sacrificial layer is formed from zinc.9. A composite component having a body portion formed from an ...

METHOD FOR SMOOTHING SURFACE ROUGHNESS OF COMPONENTS

A method for reducing surface roughness of a component according to an example of the present disclosure includes forming a layer of reactive material on a surface of a component, the surface of the component having at least one partially attached particle, whereby the reactive material substantially covers the at least one partially attached particle, and dissolving the reactive material, wherein dissolving the reactive material covering the partially attached particles causes the partially attached particles to break free from the surface of the component, leaving a new smooth surface. 1. A method for reducing surface roughness of a component , comprising:forming a layer of reactive material on a surface of a component, the surface of the component having at least one partially attached particle, whereby the reactive material substantially covers the at least one partially attached particle;dissolving the reactive material, wherein dissolving the reactive material covering the partially attached particles causes the partially attached particles to break free from the surface of the component, leaving a new smooth surface; andforming the component by additive manufacturing, wherein the at least one partially attached particle is one of a partially melted particle and a partially sintered particle.2. The method of claim 1 , wherein the component includes an internal feature claim 1 , and the internal feature includes a non-line-of-sight surface.3. The method of claim 2 , wherein the at least one partially attached particle is on the non-line-of-sight surface.4. The method of claim 3 , further comprising conveying a solution through the internal features during the dissolving step claim 3 , the solution dissolving the reactive material.5. The method of claim 4 , wherein the solution is inert with respect to the component.6. The method of claim 1 , wherein the reactive material is an element selected from one of aluminum claim 1 , bromine claim 1 , silicon claim 1 , ...

Corrosion resistant surface treatment for structural adhesive bonding to metal

A metal substrate is anodized in a phosphoric acid anodizing solution. The anodized metal substrate is thereafter contacted with a hexavalent chromium free, trivalent chromium containing acid solution to coat the anodized metal substrate. The coated anodized metal substrate can be adhesively bonded to another such treated metal substrate to form a composite article. The resulting article exhibits excellent bonding and corrosion properties.

In-situ balancing of plated polymers

A method for balancing a rotatable component is disclosed This method comprises and then plating the component to deposit a metal layer onto the component until the component is balanced. In addition, and alternative method for balancing a rotatable component is disclosed. This method comprises attaching a balancing weight to the rotatable component and rotating the component. This is followed by plating the component and the balancing weight to deposit a metal layer onto the balancing weight and the component until the component is balanced.

Ceramic-encapsulated thermopolymer pattern or support with metallic plating

A method for fabricating a ceramic component is disclosed. The method may comprise: 1) forming a polymer template having a shape that is an inverse of a shape of the ceramic component, 2) placing the polymer template in a mold; 3) injecting the polymer template with a ceramic slurry, 4) firing the ceramic slurry at a temperature to produce a green body, and 5) sintering the green body at an elevated temperature to provide the ceramic component.

Manufacture of casting cores

A method for forming an investment casting core (20) comprises cutting a patterned core precursor from refractory metal-based sheet. The cutting forms recast (24) along the cuts. An oxide (26) is grown on non-recast areas. The recast (24) is substantially chemically removed but substantially leaving the oxide (26). The core precursor may then be shaped.

In-situ balancing of plated polymers

A method for balancing a rotatable component is disclosed This method comprises and then plating the component to deposit a metal layer onto the component until the component is balanced. In addition, and alternative method for balancing a rotatable component is disclosed. This method comprises attaching a balancing weight to the rotatable component and rotating the component. This is followed by plating the component and the balancing weight to deposit a metal layer onto the balancing weight and the component until the component is balanced.

Corrosion resistant surface treatment for structural adhesive bonding to metal

A metal substrate is anodized in a phosphoric acid anodizing solution. The anodized metal substrate is thereafter contacted with a hexavalent chromium free, trivalent chromium containing acid solution to coat the anodized metal substrate. The coated anodized metal substrate can be adhesively bonded to another such treated metal substrate to form a composite article. The resulting article exhibits excellent bonding and corrosion properties.

Abrasive coating for a substrate, corresponding turbine engine component and process for coating a turbine engine airfoil

An abrasive coating (116) for a substrate (114) comprises a strike layer (130) formed on a substrate top surface (132); a base layer (134) coupled to the strike layer; a tack layer (136) coupled to the base layer (134), wherein the tack layer (136) is configured to adhere first grit particles (118) to the base layer (134); a plurality of first grit particles (118) are adapted to be coupled to the tack layer (136), a plurality of second grit particles (122) are placed between each of the plurality of first grit particles (118), the second grit particles (122) having a nominal size smaller than the first grit particles (118); and an overplate layer (138) comprising a matrix material (120) is bonded to the tack layer (136); the matrix material (120) envelops the second grit particles (122) and bonds and partially surrounds the first grit particles (118), wherein the first grit particles (118) extend above the overplate layer (138).

Corrosion resistant surface treatment for structural adhesive bonding to metal

A találmány szerinti eljárásban egy fémszubsztrátot anódosan kezelnekegy foszforsavas anódos oldatban. Az anódosan kezelt fémszubsztrátotezt követően hatvegyértékű krómtól mentes, háromvegyértékű krómottartalmazó savas oldattal hozzák érintkezésbe, és így egy fedőrétegethoznak létre az anódosan kezelt fémszubsztráton. A fedőréteggelellátott és anódosan kezelt fémszubsztrátot ragasztássalhozzárögzíthetik egy hasonlóan kezelt fémszubsztráthoz, és így többelemből álló terméket állíthatnak elő. A kapott termék kiválókorrózióelleni és kötődési tulajdonságokkal rendelkezik. Ó In the process of the invention, a metal substrate is treated anodically in a phosphoric acid anodic solution. Following the anodically treated metal substrate, a hexavalent chromium-free, trivalent chromium-containing acidic solution is contacted to form a topcoat on the anodized metal substrate. The coated and anodized metal substrate can be bonded to a similarly treated metal substrate to produce a multi-element product. The resulting product has anti-corrosion and bonding properties. SHE

Electrical discharge machining system including in-situ tool electrode

An additive manufactured workpiece includes one or more cavities having an inner surface. A dielectric interface is formed in the cavity, and conforms to the inner surface. The additive manufactured workpiece further includes an in-situ electrode in the cavities. The dielectric interface is interposed between the in-situ electrode and the inner surface of the workpiece.

Electroformed conforming rubstrip

A disk (201) made of a first material has a groove (211) in which a blade (203) made of a second material is retained. A strip (230) is placed between the blade (203) and the disk (201) to minimize rubbing damage to the blade (203) and the disk (201) and an insulating material (300) is placed between the rub strip (230) and the blade (203) for minimizing damaging responses of the blade (203) to galvanic forces created by rubbing of the first material and the second material.

Method for casting core removal

To destructively remove a refractory metal casting core from a cast part the part is exposed to a combination of nitric acid and sulfuric acid.

Method for casting core removal

METHOD FOR CASTING CORE REMOVAL To destructively remove a refractory metal casting core from a cast part the part is exposed to a combination of nitric acid and sulfuric acid.

Method for smoothing surface roughness of components