Oxidation Behavior and Residual Stress in Thermally Grown Oxides of Detonation and High Velocity Oxygen Fuel Sprayed NiCrAlY Coatings
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Published:2007-05
Issue:
Volume:546-549
Page:1707-1712
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ISSN:1662-9752
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Container-title:Materials Science Forum
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language:
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Short-container-title:MSF
Author:
Chen Z.X.1,
Yuan F.H.1,
Zhu Shi Jie2,
Wang Zhong Guang1
Affiliation:
1. Chinese Academy of Sciences
2. Fukuoka Institute of Technology
Abstract
NiCrAlY coatings were prepared by the detonation spraying (DS) and high velocity oxygen
fuel (HVOF) spraying processes, respectively. The DS NiCrAlY coating has higher oxidation rate
than the HVOF NiCrAlY coating at 1100 oC due to its rougher surface and more mixed oxides. The
residual compressive stress in thermally grown oxides (TGO) on the DS NiCrAlY coating is higher
than that on the HVOF coating because the θ-Al2O3 to? α-Al2O3 transformation causes the tensile
stress in the TGO on the HVOF coating.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
1 articles.
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