Isothermal oxidation behavior of ru modified aluminide coating on a fourth generation single crystal superalloy

被引：5
|
作者：
Matsuoka, Yuki
Chikugo, Kazuyoshi
Suzuki, Takakazu
Matsunaga, Yasuo
Taniguchi, Shigeji
机构：
[1] Ishikawajima Harima Heavy Ind Co Ltd, Dept Mat, Res Lab, Isogo Ku, Yokohama, Kanagawa 2358501, Japan
[2] Osaka Univ, Grad Sch Engn, Dept Mat Sci & Proc, Suita, Osaka 5650871, Japan
来源：
ADVANCED STRUCTURAL AND FUNCTIONAL MATERIALS DESIGN, PROCEEDINGS | 2006年 / 512卷
关键词：
Ni-base SC superalloy; Ru coating; aluminizing; isothermal oxidation; alumina scale; transformation;
D O I：
10.4028/www.scientific.net/MSF.512.111
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ru coating prior to aluminizing is one of the effective methods to reduce the harmful intermediate layer that forms under the coating (SRZ) on a 4(th) generation Ni-base SC superalloy. This study examined the short-term isothermal oxidation behavior of this Ru-modified coating at 1373 K in air. Surface observation by SEM showed that the scale becomes flat and uniform in comparison to simple aluminide coating. XRD and cross-sectional analysis results also showed that phase transformation from beta-NiAl to gamma'-Ni3Al seldom occurs in the Ru-modified coating layer leading to the prevention of local oxidation.
引用
收藏
页码：111 / 116
页数：6
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