COATING SYSTEM INCLUDING DIFFUSION BARRIER LAYER INCLUDING IRIDIUM AND OXIDE LAYER

摘要

In some examples, an article may include a superalloy substrate and a coating on the superalloy substrate. In accordance with this example, the coating includes a diffusion barrier layer on the substrate and a wear resistant oxide layer over the diffusion barrier layer. The diffusion barrier layer may include iridium and the wear resistant oxide layer may include at least one of silica, zirconia, or chromia.

主权项

1. An article comprising:
a superalloy substrate; a coating on the superalloy substrate, wherein the coating comprises a diffusion barrier layer on the substrate, wherein the diffusion barrier coating comprises iridium, and a wear resistant oxide layer over the diffusion barrier layer, wherein the wear resistant oxide layer comprises at least one of silica, zirconia, or chromia.