Hydrogen-resistant high-strength steels and the method for the manufacture thereof
US4836869A · kind A · utility
3Cited by
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25Claims
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Key dates
| Filing date | Nov 25, 1987 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Nov 25, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C32/0026
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high-strength steel having improved resistance to hydrogen embrittlement characterized as being essentially free of manganese and having a stable rare earth oxymetalloid dispersion consisting of, e.g., lanthanum oxysulfide and lanthanum phosphate. The steel prepared using rapid solidification processing coupled with late addition of the rare earth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.