It showed that the 6.0% LaO2 addition could reduce the porosity, the size of coating pores and the stress concentrated at the pore edges, thus improved the adhesive strength and anti-thermal shock performance of the coating.

• 研究结果表明，加入适量稀土氧化 物添加剂后可降低涂层中的孔隙率和气孔尺寸，减少涂层内应力在气孔边缘的应力集中，提 高了Al_2O_3涂层的结合强度和抗热冲击性能。