Paper Title:
Isothermal Oxidation Behavior of Ru Modified Aluminide Coating on a Fourth Generation Single Crystal Superalloy
  Abstract

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 4th 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 β-NiAl to γ’-Ni3Al seldom occurs in the Ru-modified coating layer leading to the prevention of local oxidation.

  Info
Periodical
Edited by
Yukichi Umakoshi and Shinji Fujimoto
Pages
111-116
DOI
10.4028/www.scientific.net/MSF.512.111
Citation
Y. Matsuoka, K. Chikugo, T. Suzuki, Y. Matsunaga, S. Taniguchi, "Isothermal Oxidation Behavior of Ru Modified Aluminide Coating on a Fourth Generation Single Crystal Superalloy", Materials Science Forum, Vol. 512, pp. 111-116, 2006
Online since
April 2006
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