Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1990-04-17
1991-12-31
Dean, R.
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428678, 428937, 427 34, 32B 1501, B32B 1501
Patent
active
050771400
ABSTRACT:
Coatings that provide substantial oxidation protection for titanium substrates are comprised of a continuous coating of ductile MCrAl or ductile MCr alloys where M is at least one metal selected from the group consisting of iron, nickel, and cobalt. Ductile MCrAl alloys are comprised of, by weight percent: about 10 to 40 percent chromium, about 4 to 10 percent aluminum, and the balance substanitally iron; about 8 to 40 percent chromium, about 4 to 10 percent aluminum, and the balance substantially nickel; or about 10 to 25 percent chromium, about 4 to 5.5 percent aluminum, and the balance substantially cobalt. Ductile MCr alloys are comprised of, by weight percent: about 20 to 40 percent chromium, and the balance substantially iron; about 20 to 50 percent chromium, and the balance substantially nickel; or about 15 to 35 percent chromium, and the balance substantially cobalt. The coatings can be deposited by plasma spraying, chemical vapor deposition, or physical vapor deposition and remain adherent on titanium substrates during repeated thermal cycling while providing substantial oxidation protection up to about 950.degree. C.
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Luthra Krishan L.
McKee Douglas W.
Davis Jr. James C.
Dean R.
General Electric Company
Magee Jr. James
McGinness James E.
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