Stainless steel tubular element with improved wear resistance
US4873117A · kind A · utility
8Cited by
14References
8Claims
0Family size
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Key dates
| Filing date | Sep 18, 1987 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Sep 18, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S376/90
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A sheath for a nuclear reactor control rod consists of chromium nickel stainless steel. It is protected against friction wear by nitridation over a depth of from 15 to 50 .mu.m obtained by an electric discharge in a nitrogen containing atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.