Emission spectroscopy analysis for the non-destructive evaluation of the health of thermal barrier coatings

被引：0
|
作者：
Guofeng Chen
Kang N. Lee
Surendra N. Tewari
机构：
[1] Cleveland State University,Chemical Engineering Department
[2] NASA Glenn Research Center,undefined
来源：
Journal of Materials Science | 2006年 / 41卷
关键词：
Li2O; Bond Coat; Thermal Barrier Coating; Yttria Stabilize Zirconia; Flame Temperature;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Lithium oxide was selected as an emission spectroscopic marker in yttria stabilized zirconia (YSZ) thermal barrier coatings (TBCs). The spectral response of excited lithium atoms from dip-coated YSZ containing 5, 3, 1, and 0.3 wt.% lithium oxide and plasma-sprayed YSZ containing 1 wt% lithium oxide was examined under an oxy-acetylene flame. Results showed that the intensity of lithium emission spectrum is a function of the concentration of lithium oxide in the YSZ, the flame temperature, and the degree of TBC degradation. It indicates that an emission spectroscopy can be used to monitor the degradation of TBCs.
引用
收藏
页码：6855 / 6860
页数：5
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