Alcoa Inc.

Aluminum Company of America

Al-armor

Alcca Inc.

Roger W Kaufold

Joseph P Harenski

Larry F Wieserman

Edward P Patrick

Neville C Whittle

A Victor Pajerski

Robert J Speer

Brian James Morrissey

Robert L Shadwick, Jr

Susanne Marie Opalka

Bruce M Warnes

Patricia Stewart

Paula L Kolek

Daniel D Roup

Calvin Bates

Daniel W Severa

Joseph A Downie

Jamal Righi

Ian D L Murray

Sally A Jankosky

Andrew C Towns

A protective coating for aluminum alloys, electrode for producing same and a coating process using the welding electrode. The protective coating and electrode comprise a composite consisting essentially of alumina particles in a matrix, wherein the matrix is a metal selected from the group consisting of aluminum or an aluminum alloy. The alumina particles consist of aluminum oxide in powder form. The coating process using the welding electrode above comprises the steps of: electro-spark depositing a composite on to a substrate, wherein the composite consists essentially of alumina particles in a matrix, wherein the matrix is a metal selected from the group consisting of aluminum or an aluminum alloy. The substrate herein is an aluminum alloy. The coatings involve only aluminum and aluminum compounds, thereby intermetallic compound formation and galvanic corrosion of the coating-substrate materials system is avoided.

Metallurgically bonded wear resistant texture coatings for aluminum alloys and metal matrix composite electrode for producing same

The present disclosure relates to tank wheel assembly systems, methods, and apparatus. In one embodiment, a tank wheel assembly includes a first wheel and a second wheel. A first face of the first wheel faces a second face of the second wheel. A guide tunnel is defined by at least a portion of the first face and at least a portion of the second face. The guide tunnel has outer surfaces and is configured to receive a center guide of a tank tread. The guide tunnel and center guide at least partially maintain the tank tread of the tank wheel assembly. A wear resistant coating is located on at least a portion of the outer surfaces of the guide tunnel, restricts the center guide of the tank tread from abrading the outer surfaces of the guide tunnel, and has a thickness of at least about 0.025 inch.

Tank wheel assembly with wear resistant coating

An aluminum alloy article is cleaned to remove oxides and organic matter from a coatable surface, coated with a composition comprising an organic resin and a fluorine compound, and then heated to an elevated temperature to decompose the organic resin and at least a portion of the fluorine compound. After heating the coated surface is left with a protective oxyfluoride film that prevents blistering and hydrogen pickup and promotes hydrogen degassing from the article.

Protective fluoride coatings for aluminum alloy articles

A method of coating a vehicle wheel to increase wear and corrosion resistance of the vehicle wheel, includes the steps of providing a vehicle wheel and applying a wear and corrosion resistant coating onto a surface of the vehicle wheel. The coating is applied to at least a tire bead retaining flange of the vehicle wheel. The coating is of particular use with vehicle wheels made of forged aluminum. The coating is selected from tungsten carbide, optionally including cobalt or chrome, a nickel-based superalloy, aluminum and silicon carbide, or stainless steel. The coating is typically applied to a thickness of about 0.004-0.01 inch. The surface of the vehicle wheel may be prepared by mechanically abrading the surface or chemically etching the surface of the vehicle wheel. The coating may be applied by cold spraying, thermal spraying, or triboelectric discharge kinetic spraying and other similar processes.

Coated vehicle wheel and method

A coating for a mold surface of a casting mold includes a metallic bond coat bonded to the mold surface and having a continuous, uniform thickness of between about 0.002 to 0.005 inch on the mold surface. A topcoat of yttria stabilized zirconia is located on top of the metallic bond coat and has a continuous, uniform thickness of between about 0.005 to 0.030 inch. The topcoat has a porosity between 5-15%. The topcoat has a surface layer having a thickness of between about 0.001 to 0.002 inch and a porosity of less than 1%.

Mold coating

A method of treating a surface of a stacked aluminum alloy ingot during a heating process. Spacer blocks are positioned adjacent aluminum alloy ingots to form a stack, wherein the spacer block has a support surface contacting a contact surface of the aluminum alloy ingot, and at least one of the support surface and the contact surface include a fluorine containing material. The stack is heated to at least a temperature at which the fluorine containing material decomposes or vaporizes such that a layer of a fluorinated oxide compound is formed at the interfaces between the ingots and the spacer blocks.

Treatment of ingots or spacer blocks in stacked aluminum ingots

A spacer member in a furnace including an aluminum tube containing a ceramic material. The ceramic material provides high compressive strength and the composite product resists high temperature creep.

Ceramic core spacer blocks for high temperature preheat cycles

A method for making an aluminum substrate that is subjected to repeated impaction more wear resistant. The method comprises applying at least about 0.005 inch thick coating of an amorphous composition directly to only portions of this substrate, preferably after it is shaped into a product for transporting consumable materials. The coating composition to which steel, aluminum, PTFE and/or polyethylene may be added, can be thermally sprayed to the substrate surface.

Method for making aluminum sheet and plate products more wear resistant

A friction-wear aluminum part which includes a metal substrate and an outer friction-wear, ceramic-free coating applied to at least a portion of the outer surface to said substrate. The coating is a mixture of both aluminum and stainless steel. On a preferred basis, the surface of the substrate is intentionally grooved to facilitate bonding of the coating thereto. An associated method is also disclosed.

Friction-wear aluminum part and associated method

A friction-wear aluminum part which includes a metal substrate and friction-wear coating applied to at least a portion of the outer surface to said substrate. The coating is a mixture of both aluminum and stainless steel. On a preferred basis, the surface of the substrate is intentionally roughened or grooved to facilitate bonding of the coating thereto. An associated method is also disclosed.

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Pittsburgh, PA, United States of America

Roger W Kaufold