Production process of ferrite stainless steel covered with oxide whisker
US5017544A · kind A · utility
4Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1988 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Nov 29, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention concerns a production process of ferrite stainless steel covered with oxide whisker suitable for metal catalyst supports in automobile's exhaust gas converters, which comprises plating a ferrite stainless steel with aluminum, diffusing the aluminum into the stainless steel by heating in vacuum or in a non-oxidizing gas so that the surface of the ferrite stainless steel turns into an aluminum-enriched ferrite phase, and allowing oxide whisker to grow there by heating in the air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.