Production of metals and metal alloys of high purity
US4111686A · kind A · utility
5Cited by
5References
10Claims
0Family size
Inventors
Key dates
| Filing date | Sep 29, 1975 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Sep 29, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.