Al2O3 涂层对硅基陶瓷型芯与镍基单晶高温合金界面反应的影响

Al₂O₃ 涂层对硅基陶瓷型芯与镍基单晶高温合金界面反应的影响

何家宝, 王亮, 张朝威, 邹明科, 孟杰, 王新广, 姜肃猛, 周亦胄, 孙晓峰

Effect of Al₂O₃ Coating on Interface Reaction Between Si-Based Ceramic Core and Ni-Based Single-Crystal Superalloy

HE Jiabao, WANG Liang, ZHANG Chaowei, ZOU Mingke, MENG Jie, WANG Xinguang, JIANG Sumeng, ZHOU Yizhou, SUN Xiaofeng

表5 计算所需的热力学参数^[21]

Table 5 Thermodynamic parameters used for the calculation^[21]

Element (compound)	$H_{298}^{θ}$ kJ‧mol^-1	$S_{298}^{θ}$ J‧mol^-1	$c_{p} (T) = A + B \times 10^{- 3} T + C \times 10^{5} T^{- 2} + D \times 10^{- 6} T^{2}$ J‧mol^-1‧K^-1				T
Element (compound)	$H_{298}^{θ}$ kJ‧mol^-1	$S_{298}^{θ}$ J‧mol^-1					K
			A	B	C	D	K
			A	B	C	D
Hf	0	43.56	23.460	7.623	0	0	298-2013
SiO₂	-908.35	43.40	71.626	1.891	-39.058	0	298-2000
HfO₂	-1113.20	59.36	72.111	9.050	-12.941	0	298-1973
Si	0	18.82	22.824	8.238	-2.063	0	1685-1973
Al	0	28.32	31.748	0	0	0	933-2767
Al₂O₃	-1675.27	50.94	120.516	9.192	-48.367	0	800-2327