Evaluation of plasma sprayed YSZ thermal barrier coatings with the CMAS deposits infiltration using impedance spectroscopy

被引：1
|
作者：
Musharaf Abbas [1 ]
机构：
[1] Key Laboratory of Aerospace Materials & Performance(Ministry of Education),School of Materials Science and Engineering,Beihang Univerisity
来源：
Progress in Natural Science:Materials International | 2012年 / 22卷 / 01期
关键词：
Calcium-magnesium-alumino-silicate; Thermal barrier coatings; Plasma spray; Impedance spectroscopy;
D O I：
暂无
中图分类号：
TG174.4 [金属表面防护技术];
学科分类号：
摘要：
The yttria-stabilized zirconia(YSZ) thermal barrier coatings(TBCs) prepared by atmospheric plasma spraying with different heat treatment period at the temperature of 1250 1C were studied in the present investigation.Electrochemical impedance spectroscopy(EIS) was employed to nondestructively examine the impedance and capacitance behavior of free standing YSZ coatings deposited by plasma spray with CMAS(calcium-magnesium-alumino-silicate) infiltration.Equivalent circuit was established on the basis of the biomodal structure in coatings.The sintering behavior of the coatings can be reflected by the changes of resistance and capacitance of the coating.By EIS,the microstructure evolution of the coating with CMAS deposits was discussed in detail.
引用
收藏
页码：40 / 47
页数：8
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