环境障涂层材料及结构优化研究进展

任明泽, 董琳, 杨冠军

Research Progress on Material and Structure Optimization of Environmental Barrier Coatings

REN Mingze, DONG Lin, YANG Guanjun

表1 常见EBC候选材料的热学参数[3,6,9]

Table 1 Thermal parameters of commonly investigated EBC candidate materials[3,6,9]

Material α / × 10-6·K-1 λ / W·(m·K)-1 SiC 4.5~5 - Si 3.5~4.5 10~20 Mullite 5~6 - BSAS (monoclinic) 4~5 - BSAS (hexagonal) 7~8 - Yb2SiO5 7~8 0.74~1.15 Er2SiO5 7~8 1.42 Y2SiO5 7~8 1.65 Gd2SiO5 9.9~10.3 1.45 Lu2SiO5 6.7 1.63 Yb2Si2O7 4~6 2.0 Lu2Si2O7 3.8 - Yb2O3 6.8~8.4 - YSZ 10.5 2~5