Method for surface treatment by selective removal of a bonding primer on a titanium or titanium alloy substrate
AssigneeSafran Aircraft Engines
InventorsAnthony Grunenwald, Pierre Antoine Bossan
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Abstract
A method for treating the surface of a titanium or titanium alloy metal reinforcement of a blade made of composite material enables selective removal of a bonding primer with respect to the titanium or titanium alloy reinforcement. The method includes subjecting the metallic reinforcement to a thermal treatment performed at a temperature of between 250 and 350° C. for a period of between 1 hour and 10 hours in an oxidizing atmosphere. The method further includes subjecting the metallic reinforcement, after the thermal treatment, to a chemical pickling in an alkaline bath.
Claims8
A method for treating a surface of a metallic reinforcement made of titanium or titanium alloy of a vane, comprising the steps of:
- A) subjecting the metallic reinforcement to a thermal treatment performed at a temperature of between 25° and 350° C. for a period of between 1 hour and 10 hours in an oxidizing atmosphere;
- and
- B) subjecting the metallic reinforcement, after the thermal treatment in step A), to a chemical pickling in an alkaline bath, comprising the substeps of:
- B-2) pickling in alkaline medium;
- B-3) neutralizing;
- and
- B-4) final rinsing.
Dependencies are inferred from the claim text.