ReCr alloy coating for diffusion barrier

Details ReCr alloy coating for diffusion barrier ReCr alloy coating for diffusion barrier

2006-06-13

2006-06-13

McNeil, Jennifer (Department: 1775)

Stock material or miscellaneous articles

All metal or with adjacent metals

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

Reexamination Certificate

active

07060368

ABSTRACT:
Disclosed is a ReCr alloy coating for diffusion barrier formed on a substrate, such as a high-temperature equipment member, which comprises an atomic composition of 50% to less than 90% Re, with the remainder consisting essentially of Cr except for inevitable impurities. Even if the alloy coating for diffusion barrier includes a diffusion layer containing at least one of the group consisting of Al, Si and Cr, a desired alloy composition of the alloy coating for diffusion barrier can be assured by a surface coating process and diffused components from the substrate while substantially preventing the diffusion of the elements of the diffusion layer during a homogenizing heat treatment. The alloy coating for diffusion barrier may include a Re-containing-alloy stress relief layer inserted between the film and the substrate. The ReCr—Ni alloy coating can suppress the deterioration of the substrate and the coating layer due to the reaction therebetween to provide an extended life span of the equipment member.

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