Process for forming a chromium diffusion portion and articles made therefrom

Helmick, David Andrew; Cavanaugh, Dennis William; Feng, Ganjiang; Bucci, David Vincent

Title: Process for forming a chromium diffusion portion and articles made therefrom

Patent · Tue Dec 29 00:00:00 EST 2015

OSTI ID:1234230

Helmick, David Andrew; Cavanaugh, Dennis William; Feng, Ganjiang; Bucci, David Vincent

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 .alpha.-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 .mu.m 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 .alpha.-chromium.

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Research Organization:: General Electric Co., Schenectady, NY (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: FC26-05NT42643

Assignee:: General Electric Company

Patent Number(s):: 9,222,164

Application Number:: 13/226,126

OSTI ID:: 1234230

Resource Relation:: Patent File Date: 2011 Sep 06

Country of Publication:: United States

Language:: English

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