高熵稀土单硅酸盐环境障涂层局域结构的原子对分布函数解析

王浩宇, 吕熙睿, 陈琦, 熊瑛, 罗志新, 张洁, 王京阳

Neutron Pair Distribution Function Analysis to the Local Structure of High-Entropy RE₂SiO₅ Environmental Barrier Coating

WANG Haoyu, LÜ Xirui, CHEN Qi, XIONG Ying, LUO Zhixin, ZHANG Jie, WANG Jingyang

表2 EBC各层的Young's模量及热膨胀系数(CTE)^{[10,22,23,25~29]}

Table 2 Young's moduli and coefficients of thermal expansion (CTE) of EBC system components^{[10,22,23,25-29]}

Layer	Material	Young's modulus / GPa	CTE / (10⁶ K^-1)	Ref.
Substrate	SiC	430	4.02	[25]
Bond layer	Si	82*	4.10	[23]
Inter layer	Yb₂Si₂O₇	72-85*	4.66	[22,26]
	Yb₂SiO₅	70-80*	6.5-7.32	[27]
Top layer	Yb₂O₃	90.85*	6.07-8.03	[28]
	(4RE_1/4)₂SiO₅	72.5-85*	5.49-6.59	[10]