CAJ | 학술논문

采用表面压痕技术和CCD监测技术研究了PM2000 Fe-Cr-Al高温合金热生长氧化物陶瓷薄膜在压应力作用下的脱落行为.结果表明,表面压痕法产生的压痕周围裂纹区域面积和裂纹宽度可定性表征氧化物陶瓷薄膜附着能力,裂纹区域面积越大或裂纹越宽薄膜附着能力越差;采用CCD摄像技术可以测得氧化物陶瓷薄膜初试脱落温度及脱落区域的形貌、位置、面积等数据.为进一步理解氧化物陶瓷薄膜的脱落机制提供了更多的信息.
채용표면압흔기술화CCD감측기술연구료PM2000 Fe-Cr-Al고온합금열생장양화물도자박막재압응력작용하적탈락행위.결과표명,표면압흔법산생적압흔주위렬문구역면적화렬문관도가정성표정양화물도자박막부착능력,렬문구역면적월대혹렬문월관박막부착능력월차;채용CCD섭상기술가이측득양화물도자박막초시탈락온도급탈락구역적형모、위치、면적등수거.위진일보리해양화물도자박막적탈락궤제제공료경다적신식.
Spallation behaviors of thermally grown oxide ceramic films for PM2000 Fe-Cr-Al alloy under compressive stresses were studied by surface impression method and CCD monitoring technique. The results show that the film adhesion can be qualitatively understood by testing crack region area or crack width around impression induced from surface impression technique, that is, the larger the crack region area or the wider the crack, the poorer the film adhesion; oxide film initial spallation temperature and the spalled regions morphology, site and area fraction can be obtained by monitoring continuously the film surface morphology using CCD camera during cooling from high temperature to ambient temperature which provide much useful information for understanding the spallation mechanism of thermally grown oxide ceramic film.