热障涂层陶瓷层材料LnMgAl11O19(Ln=La, Nd)粉体的性能

李滢,陈小龙,孙超,宫骏

Preparation and Performance of LnMgAl11O19(Ln=La, Nd) Powders for Thermal Barrier Coating

Ying LI,Xiaolong CHEN,Chao SUN,Jun GONG

表1 共沉淀法各前驱粉体工艺参数

Table 1 Process parameters of the precursor powders prepared by co-precipitation

pH value Precipitant Precipition temperature Precursor powder 1 12.5 Ammonia Room temperature Precursor powder 2 10.5 Ammonia 60℃ Precursor powder 3 11.5 Ammonia 60℃ Precursor powder 4 12.5 Ammonia 60℃ Precursor powder 5 8.0 Ammonium carbonate 60℃ Precursor powder 6 9.5 Ammonium carbonate 60℃