Bond coatings with high rumpling resistance: Design and characterization

SURFACE & COATINGS TECHNOLOGY

卷:300

Article

Jorgensen, David J.¹  Suzuki, Akane²  Lipkin, Don M.²  Pollock, Tresa M.¹ 

[1] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[2] GE Global Res, Niskayuna, NY USA

关键词: Bond coat design;    Nondestructive evaluation;    Oxidation;    Thermal barrier coating;    Rumpling;   

DOI  :  10.1016/j.surfcoat.2016.05.002

来源: Elsevier

【 摘 要 】

The behavior of two new high-strength gamma'-Ni3Al-base bond coats have been compared to a baseline beta-(Pt,Ni)Al bond coat via thermal cycling to a maximum temperature of 1204 degrees C. The rumpling amplitude of the gamma' coating is significantly lower than the (Pt,Ni)Al as characterized by a nondestructive optical profilometry technique. The gamma' coatings resist rumpling and spallation of the thermally grown oxide in spite of faster oxidation compared to Pt-modified NiAl. This behavior is analyzed using an analytical rumpling model to explain that the improved bond coat strength is the major contributing factor to rumpling inhibition. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

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