Diffusion barrier alloy film and high-temperature apparatus...

Details Diffusion barrier alloy film and high-temperature apparatus... Diffusion barrier alloy film and high-temperature apparatus...

2005-01-14

2010-12-14

La Villa, Michael (Department: 1784)

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

C428S655000, C428S663000, C428S667000, C428S633000

Reexamination Certificate

active

07851070

ABSTRACT:
A diffusion barrier alloy film has a diffusion barrier layer which has more excellent diffusion barrier properties than an Re—Cr alloy film, and can stand usage at higher temperatures (e.g., 1150° C. or higher). The diffusion barrier layer is made of an Re—W alloy σ phase containing 12.5 to 56.5% of W in terms of atomic composition and the remainder of Re excluding unavoidable impurities. A metal base has a surface coated with a diffusion barrier layer. If required, the diffusion barrier layer has a surface coated with a diffusion alloy layer containing 10% or greater and less than 50% of Al, Cr, or Si in terms of atomic composition, providing a high-temperature apparatus member.

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