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Microstructural and mechanical properties of thermal barrier coating at 1400℃ treatment
  • ISSN号:2095-0349
  • 期刊名称:《力学快报:英文版》
  • 时间:0
  • 分类:TG146.21[金属学及工艺—金属材料;一般工业技术—材料科学与工程;金属学及工艺—金属学] TG174.453[金属学及工艺—金属表面处理;金属学及工艺—金属学]
  • 作者机构:[1]Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China, [2]AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
  • 相关基金:This work was supported by the National Natural Science Foundation of China (91216301, 11172151, 11232008, and 11372118) and the Specialized Research of Tsinghua University Initiative Scientific Research Program.
中文摘要:

The mechanical properties of plasma-sprayed thermal barrier coating(TBC) play a vital role in governing their lifetime and performance. This work investigated the microstructural and mechanical properties of TBC with high temperature treatment at 1 400℃ by scanning electron microscopy and indentation.We calculated elastic modulus and hardness through the application of Weibull statistics analysis. The results indicate that the microstructure of ceramic coating will change continuously at high temperature, and accordingly the porosity decreases due to the grain growths and crack closes. In addition, the elastic modulus and hardness nonlinearly go up with the heat treatment time and go down with increasing porosity. This demonstrates that the microstructural evolution and porosity of TBC are caused by high temperature treatment, and as a result its mechanical properties are influenced.

英文摘要:

Abstract The mechanical properties of plasma-sprayed thermal barrier coating (TBC) play a vital role in governing their lifetime and performance. This work investigated the microstructural and mechanical properties of TBC with high tem- perature treatment at 1 400℃ by scanning electron microscopy and indentation. We calculated elastic modulus and hardness through the application of Weibull statistics analysis. The results indicate that the microstructure of ceramic coat- ing will change continuously at high temperature, and accordingly the porosity decreases due to the grain growths and crack closes. In addition, the elastic mod- ulus and hardness nonlinearly go up with the heat treatment time and go down with increasing porosity. This demonstrates that the microstructural evolution and porosity of TBC are caused by high temperature treatment, and as a result its mechanical properties are influenced.

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期刊信息
  • 《力学快报:英文版》
  • 主管单位:中国科学院
  • 主办单位:中国科学院力学研究所、中国力学学会
  • 主编:李家春
  • 地址:北京市海淀区北四环西路15号
  • 邮编:100190
  • 邮箱:taml@cstam.org.cn
  • 电话:010-82543904
  • 国际标准刊号:ISSN:2095-0349
  • 国内统一刊号:ISSN:11-5991/O3
  • 邮发代号:82-766
  • 获奖情况:
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  • 被引量:6