Chromium-based alloy
US5608174A · kind A · utility
Inventors
Key dates
| Filing date | May 15, 1995 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | May 15, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2201/013
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a chromium-based alloy which has a chromium content of more than 65% by weight and the following composition: 0.005 to 5% by weight of one or more oxides of the rare earth elements and 0.1 to 32% by weight of one or more metals selected from the group comprising iron, nickel and cobalt, the remainder being chromium. The alloy may furthermore contain up to 30% by weight of one ore more metals selected from the group comprising Al, Ti, Zr and Hf, up to 10% by weight of one or more metals selected from the group comprising V, Nb, Mo, Ta, W and Re and up to 1% by weight of C and/or N and/or B and/or Si. Compared with pure chromium the alloy has a substantially improved oxidation resistance and improved corrosion resistance, in particular with respect to vanadium pentoxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.