Snecma

Yannick Cadoret

Justine Menuey

Annie Pasquet

A method for forming a protective coating containing aluminum and zirconium on the surface of a metal part. The part is put into contact with a cement made of aluminum alloy, at a treatment temperature, with an atmosphere containing an active gas which reacts with the cement to form a gaseous aluminum halide, which decomposes in contact with the part depositing metallic aluminum thereon, the active gas containing ZrOClthat decomposes in contact with the part depositing Zr metal thereon, and being formed by vaporizing granules of ZrOClthat are solid at ambient temperature. The part, the cement, and ZrOClgranules are then progressively heated together in a chamber from ambient temperature to the treatment temperature with a plateau at 400&#xb0; C.&#xb1;200&#xb0; C.

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Suresnes, France

Yannick Cadoret