Al material excellent in thermal crack resistance and corrosion

Details Al material excellent in thermal crack resistance and corrosion Al material excellent in thermal crack resistance and corrosion

1998-11-16

2000-05-23

Speer, Timothy M.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283073, 428472, 205 50, 205106, 205151, 148275, 148518, 148537, 148688, 148698, 148703, B32B 326

Patent

active

060663928

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.

REFERENCES:
patent: 4968389 (1990-11-01), Satoh et al.
patent: 5336341 (1994-08-01), Maejima et al.
patent: 5382347 (1995-01-01), Yahalom
patent: 5472788 (1995-12-01), Benitez-Garriga

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