Union Carbide Corporation

Ucar Carbon Technology Corporation

Other

Union Carbide Coatings Service Technology Corp.

Raymond V Sara

Raymond John Elbert

Ching F Chang

A method of forming an oxidation resistant aluminum coating on a carbon-carbon composite comprising applying a slurry over the carbon-carbon composite, composed of an aluminum intermetallic in a liquid suspending vehicle including a high char yield adhesive thermoplastic and a glassy carbon, distributing aluminum, in elemental form, over the coated surface and reacting the composite and coating in a furnace.

Method of forming an aluminum protective coating on a carbon-carbon

A ternary brazing alloy for carbon or graphite consisting essentially of 0.5-10 wt % titanium, 10 to 50 wt % tin, balance copper.

Ternary brazing alloy for carbon or graphite

A method for producing sintered shapes of refractory powders with improved strength and toughness using a grain growth inhibiting powder to inhibit grain growth.

Method for sintered shapes with controlled grain size

A process to form a uniform metal boride coating on a carbonaceous substrate by first forming a metal carbide coating and reacting the carbide coating with a boron compound.

Process for forming a metal boride coating on a carbonaceous substrate

A carbonaceous source material, other than premium petroleum coke is subjected to the action of elemental boron or a boron compound, whereby the highly disordered structure is transformed into one that is very graphitic in an otherwise conventional electrode manufacturing process.

Process for producing electrodes from carbonaceous particles and a boron

A carbonaceous article, e.g., a carbon or graphite electrode, is provided with an oxidation prohibitive coating comprising a compliant, low strength, porous, sintered, particulate, refractory, ceramic material. A cover layer is preferably applied over this compliant, low strength, ceramic layer, the cover layer comprising a rigid, glassy substance which is plastic and flowable at temperatures above about 750.degree. C.

Carbonaceous articles having oxidation prohibitive coatings thereon

A carbonaceous article, e.g., a carbon or graphite crucible or mold, is provided with an oxidation prohibitive coating comprising a rigid, glassy, ceramic, refractory material containing mullite and silicon carbide or boron carbide or both. The carbonaceous article has a coefficient of thermal expansion which is greater than about 1.5.times.10.sup.-6 inch/inch/.degree.C.

Oxidation prohibitive coatings for carbonaceous articles

Metal/ceramic abradable seals of the type used in jet aircraft are improved by using a substrate which is able to deform during cooling from the brazing temperature and then rendering the substrate rigid after the cool down.

Stress relieved metal/ceramic abradable seals

An aluminum coated carbon article or composite, and process therefor having aluminum chemically bonded to carbon via an interface of a metal monocarbide formed in situ when an intermetallic phase comprising aluminum and a metal capable of reacting with carbon to form a metal carbide is reduced by carbon to aluminum and a metal carbide, the metal selected from the group consisting of tantalum, titanium and hafnium.

Chemically bonded aluminum coating for carbon via monocarbides

Stress relieved metal/ceramic abradable seals and deformable metal

Chemically bonded aluminum coated carbon via monocarbides

Porous abradable sintered metal structures suitable for use as abradable seals are rendered oxidation resistant and thus suitable for high temperature service by introducing into the porous structure an intermetallic compound of aluminum with one of chromium, titanium, cobalt and nickel, which compound is then thermally reacted with the porous metal structures to form an aluminum alloy in the structure.

Oxidation resistant porous abradable seal member for high temperature

Deformation process for producing stress relieved metal/ceramic

Metal/ceramic abradable seals of the type used in jet aircraft are improved by maintaining a temperature differential between the metal/ceramic composite and the cooler substrate during cooling from the brazing temperature.

Growing community of inventors

North Olmstead, OH, United States of America

Raymond V Sara