Coating composition having good corrosion and oxidation...

Details Coating composition having good corrosion and oxidation... Coating composition having good corrosion and oxidation...

C - Chemistry, Metallurgy

09

D

C09D 5/46 (2006.01) C23C 4/06 (2006.01) C23C 4/18 (2006.01) C23C 30/00 (2006.01)

Patent

CA 2135233

A coating composition comprising an alloy having the formula RCrAlR'R" wherein R is nickel, cobalt or the like; R' is yttrium or hafnium and R" is tantalum, rhenium and/or platinum, preferably mixed with an oxide dispersion such as alumina, to provide an improved class of coatings suitable for operating in high temperature oxidizing environments.

Composition de revêtement renfermant un alliage de formule RCrAlR'R", où R est du nickel, du cobalt ou un corps analogue ; R' est de l'yttrium ou de l'hafnium et R" est du tantale, du rhénium et (ou) du platine, de préférence sous forme de mélange avec dispersion d'un oxyde, comme l'alumine; elle permet d'obtenir une classe améliorée de revêtements, utilisables dans des milieux oxydants à haute température.

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