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3 (Y_1/4Ho_1/4Er_1/4Yb_1/4)₂SiO₅面层和Yb₂SiO₅面层Rietveld定量相分析结果及相应的精修因子

Table 3 Phase fractions in annealed (Y_1/4Ho_1/4Er_1/4Yb_1/4)₂SiO₅ and Yb₂SiO₅ topcoats and corresponding Rietveld refinements factors

Coating	Phase composition (mass fraction / %)		Refinement factor / %
	RE₂SiO₅	RE₂O₃	R-weighted pattern (R_wp)	R-pattern (R_p)
(Y_1/4Ho_1/4Er_1/4Yb_1/4)₂SiO₅	76.3	23.7	4.94	3.65
Yb₂SiO₅	73.3	26.7	7.91	5.79