Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1990-08-21
1991-05-21
Lechert, Jr., Stephen J.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
419 10, 419 23, 419 31, 419 38, 419 45, 419 48, 419 54, 419 60, 419 2, 501 96, B22F 100
Patent
active
050172174
ABSTRACT:
A method for manufacturing ceramic/metal or ceramic/ceramic composite articles is disclosed. The articles can be useful for the production of aluminum in fused salt electrolysis cells, as armor plates for the protection against projectiles, cutting tools, or in abrasion resistance applications. The temperature slope of the process if optimized such that one of the reactants in the manufacturing proceeds through peritectic decomposition at a heating rate of low temperature increase for desirably uniform temperature distribution over the reaction mixture. Then the temperature increase is greatly elevated to obtain a reaction sintering condition for avoiding grain growth of undesired reaction products. Elevated temperature reaction sintering conditions can be maintained to decompose undesired components before they are entrapped by the reaction product.
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Abbaschian Gholamreza J.
Barnes Albert L.
Clere Thomas M.
Wheeler Douglas J.
Eltech Systems Corporation
Freer John J.
Lechert Jr. Stephen J.
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