Low temperature carburization under soft vacuum
US9212416B2 · kind B2 · utility
4Cited by
54References
32Claims
0Family size
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Key dates
| Filing date | Aug 5, 2010 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Jan 17, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Low temperature carburization of stainless steel using acetylene as the carburizing specie is carried out under soft vacuum conditions in the presence of hydrogen or other companion gas. As a result, formation of soot and the undesirable thermal oxide film that normally occurs during low temperature carburization is eliminated virtually completely.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.