单斜晶系
材料科学
热稳定性
晶体结构
结晶学
陶瓷
格子(音乐)
稀土
矿物学
化学工程
复合材料
冶金
化学
声学
物理
工程类
作者
Luchao Sun,Yixiu Luo,Xiaomin Ren,Zenghua Gao,Tiefeng Du,Zhen Wu,Jingyang Wang
标识
DOI:10.1080/21663831.2020.1783007
摘要
A multicomponent rare-earth disilicate (Gd1/6Tb1/6Dy1/6Tm1/6Yb1/6Lu1/6)2Si2O7 has been designed and successfully synthesized following the strategy of high entropy engineering. The as-prepared single-phase 6RE-disilicate possesses a new γ-type crystal structure (monoclinic, P21/c) beyond the α-, β- and δ-type parent structures of six single RE disilicates. Six-species RE cations are homogeneously distributed on RE lattice sites and our multicomponent disilicate demonstrates outstanding thermal stability from room temperature up to around 1900°C. This work extends the knowledge of strategic multicomponent modification of complex ceramics with extremely high phase stability.
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