Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Powder shape or size characteristics
Patent
1988-06-14
1989-06-06
Lechert, Jr., Stephen J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Powder shape or size characteristics
75246, 75247, 419 28, 419 31, 419 32, 419 43, G22F 324
Patent
active
048369799
ABSTRACT:
A method of producing a composite material from a mixture of copper and a low coefficient of thermal expansion nickel-iron alloy (Invar) powder is disclosed wherein advantageously at least part of the copper is deposited on the Invar powder prior to processing. Processing includes cold compacting to a green strip or other configuration, annealing in the temperature range of 550.degree.-750.degree. C. and working the annealed material at a temperature in that range to high density.
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Bell James A. E.
Diaz Carlos M.
Eerkes Thijs
Mankins William L.
Inco Limited
Kenny Raymond J.
Lechert Jr. Stephen J.
Mulligan, Jr. Francis J.
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