Structural detection process for monocrystalline superalloys

Details Structural detection process for monocrystalline superalloys Structural detection process for monocrystalline superalloys

C - Chemistry, Metallurgy

25

D

C25D 11/00 (2006.01) C22C 19/03 (2006.01) C23F 3/00 (2006.01) F01D 5/14 (2006.01) F01D 5/28 (2006.01) G01N 1/32 (2006.01) G01N 33/20 (2006.01)

Patent

CA 2356303

The method according to the invention comprises a macrographic etching step followed by a "bleaching" step by electrolytic etching by means of a bath containing at least phosphoric acid and a weak acid. This method allows components made of superalloys to be easily and effectively inspected, including when they contain elements such as rhenium or ruthenium.

Le procédé selon l'invention comporte une étape d'attaque macrographique suivie d'une étape de « blanchiment » par attaque électrolytique au moyen d'un bain comprenant au moins de l'acide phosphorique et un acide faible. Ce procédé permet de réaliser une inspection aisée et efficace de pièces en superalliages, y compris lorsque ceux-ci contiennent des éléments tels que le rhénium ou le ruthénium.

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