Alumina-yttria mixed oxides in dispersion strengthened high temperature alloy powders
US4427447A · kind A · utility
8Cited by
9References
10Claims
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Key dates
| Filing date | Mar 31, 1982 |
| Grant date | Jan 24, 1984 |
| Priority date | — |
| Expiry date | Mar 31, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S75/956
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed are metal powders mixtures which can be mechanically alloyed into oxide dispersion strengthened high temperature alloys. The powder mixtures contain from 0 to 30 wt. % chromium, about 0 to 3 wt. % titanium, about 0.3 wt. % to 10 wt. % aluminum, and from about 0.3 wt. % to 10 wt. % particles of one or more alumina-yttria mixed- oxides selected from the group consisting of Al.sub.2 O.sub.3.2Y.sub.2 O.sub.3, Al.sub.2 O.sub.3.Y.sub.2 O.sub.3, and 5Al.sub.2 O.sub.3.3Y.sub.2 O.sub.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.