US Patent 7311981 Gas turbine part provided with a protective coating

Patent 7311981 was granted and assigned to Snecma on December, 2007 by the United States Patent and Trademark Office.

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Patent Inventor Names

Bertrand Saint Ramond0

John Nicholls0

Manuel Silva0

Maxime Carlin0

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Patent abstract

A gas turbine part comprises a superalloy metal substrate, a bonding underlayer formed on the substrate and comprising an intermetallic compound of aluminum, nickel, and platinum, and a ceramic outer layer anchored on the alumina film formed on the bonding underlayer. The bonding underlayer essentially comprises an Ni—Pt—Al ternary system constituted by an aluminum-enriched α-NiPt type structure, in particular an Ni—Pt—Al ternary system having a composition NizPtyAlx in which z, y, and x are such that 0.05≦z≦0.40, 0.30≦y≦0.60, and 0.15≦x≦0.40.

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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=073119810

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