Al material excellent in thermal crack resistance and corrosion resistance
US6066392A · kind A · utility
20Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1998 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Nov 16, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249956
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An Al material having an anodic oxidation film is provided that is excellent in gas and plasma corrosion resistance. By the present invention, a crack is not generated in the anodic oxidation film even in high temperature thermal cycles and corrosive gas or plasma environment. In the Al material having an Al alloy having on its surface an anodic oxidation film according to the invention, the anodic oxidation film has a porous layer and a barrier layer, and portions of cell triplet points, at which boundary faces of 3 cells in the porous layer melt, have secondary-pores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.