Microstructure Characterization and Property of Plasma Sprayed Nanostructured TBCs
The technology and thermal shock properties and thermal conductivity of plasma sprayed nanostructured yttriastabilized zirconia thermal barrier coatings (TBCs) are studied in this paper. The TBCs on the substrate of Ni3Al based alloy IC-10 were fabricated by using the nanostructured yttria-stabilized zirconia powder under certain plasma spraying conditions. By manipulating the plasma spray process, nanostructured TBCs were obtained. The specimens were thermally shocked from 1000℃, 1100 ℃ and 1200℃ into 20℃ water and the morphology and microstructure of the TBCs were evaluated by light microscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The thermal diffusivity was tested by a laser pulse method. The results showed that the nanostructured TBCs had more than 30％ reduction in thermal conductivity and the thermal shock lifetimes were much longer than that of the conventional TBCs.
Q. Li S. Li W. Yang
Beijing Aeronautical Manufacturing Technology Research Institute, Beijing, PRC
国际会议
北京
英文
2007-05-14（万方平台首次上网日期，不代表论文的发表时间）