Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1985-04-04
1986-06-03
Lechert, Jr., Stephen J.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75228, 75245, 419 3, 419 4, 419 24, 419 31, 419 32, 419 36, 419 37, 419 38, 419 40, 419 55, B22F 100
Patent
active
045927804
ABSTRACT:
A process for producing a flat product such as a coin includes the steps of forming a slurry comprising a suspension of particulate material in a film-forming cellulose derivative, depositing a quantity of this slurry onto a support surface, drying the slurry to form a self-supporting flat product, and removing the dried product from the support surface. The particulate material essentially comprises metallic particles and matter whose chemical composition and physical properties differ from those of the metallic particles such that the added matter is not or only partially taken into solution with the metallic particles on heat treatment of the product whereby the presence of the added matter can readily be detected following such heat treatment.
REFERENCES:
patent: 3335000 (1967-08-01), Bliss
patent: 3653884 (1972-04-01), Davies et al.
patent: 3658517 (1972-04-01), Davies et al.
patent: 3681062 (1972-08-01), Jackson
patent: 3796563 (1974-03-01), Wieland
patent: 3839026 (1974-10-01), Gibbon
Davies Idwal
Fage John L.
Lechert Jr. Stephen J.
Mixalloy Limited
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