发明名称 |
Process for forming a chromium diffusion portion and articles made therefrom |
摘要 |
In one embodiment, a method for forming an article with a diffusion portion comprises: forming a slurry comprising chromium and silicon, applying the slurry to the article, and heating the article to a sufficient temperature and for a sufficient period of time to diffuse chromium and silicon into the article and form a diffusion portion comprising silicon and a microstructure comprising α-chromium. In one embodiment, a gas turbine component comprises: a superalloy and a diffusion portion having a depth of less than or equal to 60 μm measured from the superalloy surface into the gas turbine component. The diffusion portion has a diffusion surface having a microstructure comprising greater than or equal to 40% by volume α-chromium. |
申请公布号 |
US9222164(B2) |
申请公布日期 |
2015.12.29 |
申请号 |
US201113226126 |
申请日期 |
2011.09.06 |
申请人 |
General Electric Company |
发明人 |
Helmick David Andrew;Cavanaugh Dennis William;Feng Ganjiang;Bucci David Vincent |
分类号 |
C23C10/26 |
主分类号 |
C23C10/26 |
代理机构 |
|
代理人 |
Cusick Ernest G.;Landgraff Frank A. |
主权项 |
1. A method for forming an article with a diffusion portion, comprising:
forming a slurry comprising chromium and silicon; applying the slurry to the article; and heating the article to a sufficient temperature for a sufficient period of time to diffuse chromium and silicon into the article and form a diffusion portion comprising silicon and a microstructure comprising α-chromium; wherein the slurry further comprises an activator and a carrier; wherein the article has an initial thickness; and wherein the diffusion portion has a surface; and wherein a 25% depth of the diffusion portion, as measured from the surface comprises a chromium concentration of greater than or equal to 50 wt %, based upon a total weight of the 25% depth; wherein the article with the diffusion portion has a final thickness, and wherein the initial thickness equals the final thickness. |
地址 |
Schenectady NY US |