Low temperature carburization under soft vacuum
US10934611B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Nov 28, 2018 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | May 22, 2039 |
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.