High-temperature protection layer

Details High-temperature protection layer High-temperature protection layer

C - Chemistry, Metallurgy

23

C

C23C 30/00 (2006.01) C23C 4/08 (2006.01) C23C 28/00 (2006.01)

Patent

CA 2473565

The invention discloses a high-temperature protection layer which contains (% by weight) 23 to 27% Cr, 4 to 7% Al, 0.1 to 3% Si, 0.1 to 3% Ta, 0.2 to 2% Y, 0.001 to 0.01% B, 0.001 to 0.01% Mg and 0.001 to 0.01% Ca, remainder Ni and inevitable impurities. It is preferable for the Al content to be in a range from over 5 up to 6% by weight.

L'invention concerne un revêtement de protection haute température contenant (en pourcentage en poids) 23 à 27 % en poids de Cr, 4 à 7 % en poids de Al, 0,1 à 3 % de Si, 0,1 à 3 % de Ta, 0,2 à 2 % de Y, 0,001 à 0,01 % de B, 0,001 à 0,01 de Mg et 0,001 à 0,01 % de Ca, ainsi que du Ni et des impuretés inévitables qui constituent le reste des composants. De préférence, la teneur en Al se situe dans une plage comprise entre plus 5 et 6 % en poids.

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