Apparatus for semi-solid processing of a metal
US5996679A · kind A · utility
5Cited by
8References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 4, 1996 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Nov 4, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/0433
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A fully dense powder metal cobalt-base article having high resistance to semi-solid metal wear and corrosion. The article has a constituent composition of C in an amount of about 0.65 to less than about 1%, W in an amount of about 3 to about 5%, Cr in an amount of about 25 to about 30%, Co in an amount principally comprising the balance of the article. The article has a hardness of greater than 42HRC and more preferably 45HRC, a bend fracture strength of greater than 330 ksi and substantial dimensional and mechanical property stability during exposure to temperatures in range of about 1100.degree. F. to 1500.degree. F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.