Residual stress measurement of Sic fiber/YSZ composite thermal barrier coating by micro-Raman spectroscopy

6th Annual International Conference on Material Science and Engineering

Ma, Rongbin^1 ; Tan, Ziyi^1 ; Kang, Genglei^1

Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, China^1

关键词: Micro Raman Spectroscopy;    SiC fibers;    Thermal barrier coating (TBC);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/397/1/012019/pdf
DOI  :  10.1088/1757-899X/397/1/012019

来源: IOP

【 摘 要 】

Residual stress distribution in Sic fiber/YSZ composite thermal barrier coating (TBC) on a stainless substrate has been measured by micro-Raman spectroscopy. Stress-spectroscopic coefficient was calibrated on a independent TBC layer. The coefficient for all TBC system is Σ=33.92cm-1Gpa-1. The stress measurement along the TBC thickness shows compressive stress distribution is decrease progressively from substrate/top coat interface to TBC surface. And the fiber can effectively relaxing the residual stress of composite coating.