Concurrent flow of activating gas in low temperature carburization
US9617632B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Jan 4, 2013 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Jun 29, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D6/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Low temperature gas 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. Carburization is made to go faster by including HCl or other carbon-free, halogen-containing activating compound in the carburizing gas being fed to the carburization reactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.