Production of metals and metal alloys of high purity

Details Production of metals and metal alloys of high purity Production of metals and metal alloys of high purity

1975-09-29

1978-09-05

Vertiz, O. R.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 05AB, 75106, 75135, 75 84, 75 841R, C22C 104, C22C 4300, B22F 900

Patent

active

041116860

ABSTRACT:
A method of making powdered metals or metal alloys of high purity wherein a monometallic or polymetallic cyanide complex is formed of a metal of Groups IIIA, IVA and IIIB of the Periodic Table of the Elements (especially or including, yttrium, the lanthanides elements of atomic numbers 58 - 71, inclusive, titanium, zirconium, hafnium, chromium, gallium, indium, thorium, cobalt and nickel). The cyanide complex is treated in crystalline form with dry hydrogen at temperatures generally between 700.degree. and 1300.degree. C, any hydride formed being decomposed by heating.

REFERENCES:
patent: 1397684 (1921-11-01), Hahn
patent: 3007793 (1961-11-01), Grimes
patent: 3347662 (1967-10-01), Snyder
patent: 3904737 (1975-09-01), Paris et al.
patent: 3909247 (1975-09-01), Paris et al.

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