Overlay coatings with high yttrium contents

Details Overlay coatings with high yttrium contents Overlay coatings with high yttrium contents

1983-07-12

1986-10-07

Hearn, Brian E.

Alloys or metallic compositions

Containing over 50 per cent metal but no base metal

Chromium containing

420443, 420445, 420455, 420460, 428680, B32B 1501, B32B 1520, C22C 1903, C22C 3000

Patent

active

046158650

ABSTRACT:
Improved coating compositions are described for the protection of superalloys at elevated temperatures. The coatings of the NiCrAlY or NiCoCrAlY type are significantly improved by the use of higher levels of yttrium.

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