摘要
本文采用高能等离子喷涂方法制备了孔隙率为14.03%~28.22%的多孔YSZ涂层,研究了喷涂工艺参数对涂层孔隙率以及涂层基本性能的影响。结果表明:随孔隙率的增加,涂层的硬度和结合强度整体呈现下降的趋势,孔隙率14.03%时硬度为92.4 HR15Y,孔隙率26.04%时硬度降低到84.2 HR15Y,强度则由9.62 MPa降低到5.03MPa;涂层在1060℃下抗热震次数呈现先明显增加后降低的趋势,当孔隙率为26.04%时,涂层在464次水冷热震后保持完好,涂层抗热震性能最优。
In this paper,porous YSZ coatings with porosity of 14.03%~28.22%were prepared by high-energy plasma spraying.The effects of spraying process parameters on the porosity and basic properties of coatings were studied.The results showed that the hardness and bonding strength of the coating decreased with the increase of porosity.The hardness was 92.4 HR15Y at porosity of 14.03%,which decreased to 84.2 HR15Y at porosity of 26.04%,and the strength was reduced from 9.62 MPa to 5.03 Mpa.The number of thermal shock resistance of the coating at 1060℃showed a trend offirst increasing significantly and then decreasing.When the porosity was 26.04%,the coating remained intact after 464 times water-cooled and thermal shocks,and exhibited well thermal shock resistance.
作者
胡晓蕾
郭丹
刘建明
卢晓亮
彭浩然
黄兆晖
Hu Xiaolei;Guo Dan;Liu Jianming;Lu Xiaoliang;Peng Haoran;Huang Zhaohui(BGRIMM Technology Group,Beijing 100160;Beijing Engineering Technology Research Center of Surface Strengthening and Repairing of Industry Parts,Beijing 102206;Beijing Key Laboratory of Special Coating Material and Technology,Beijing 102206;Aircraft Maintenance&Engineering Corporation,Beijing 100621)
出处
《热喷涂技术》
2023年第1期45-51,37,共8页
Thermal Spray Technology
关键词
YSZ涂层
孔隙率
硬度
结合强度
抗热震性
YSZ coating
Porosity
Hardness
Binding strength
Thermal shock resistance
