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Non-stoichiometric rare earth zirconate ceramic and preparation method thereof
The invention belongs to the field of zirconate ceramic materials, and particularly relates to rare earth zirconate ceramic and a preparation method thereof. The chemical formula of the rare earth zirconate ceramic provided by the invention is (Gd < 1-x > Yb < x >) < 2 + > yZr < 2-y-z > Hf < z > O < 7-0.5 y >, x is less than or equal to 0.3,-0.15 lt; yt; Yt; y is not equal to 0, and z is greater than or equal to 0 and less than or equal to 0.6. The rare-earth zirconate ceramic is non-stoichiometric rare-earth zirconate gadolinium-based ceramic, extra interstitial cation or cation vacancy defects generated when components deviate from a normal stoichiometric ratio and a microstructure generated by the defects are utilized, so that phonon scattering in the heat conduction process is greatly enhanced, and the heat conductivity of the material is remarkably reduced; meanwhile, by means of ytterbium doping or ytterbium and hafnium co-doping, the effect of optimizing the thermal and mechanical properties of the material is achieved in different lattice positions, and the requirement for the thermal barrier coating material with the continuously-improved temperature resistance requirement is met.
本发明属于锆酸盐陶瓷材料领域，具体涉及一种稀土锆酸盐陶瓷及其制备方法。本发明提供的稀土锆酸盐陶瓷，化学式为(Gd1‑xYbx)2+yZr2‑y‑zHfzO7‑0.5y，其中0
Non-stoichiometric rare earth zirconate ceramic and preparation method thereof
The invention belongs to the field of zirconate ceramic materials, and particularly relates to rare earth zirconate ceramic and a preparation method thereof. The chemical formula of the rare earth zirconate ceramic provided by the invention is (Gd < 1-x > Yb < x >) < 2 + > yZr < 2-y-z > Hf < z > O < 7-0.5 y >, x is less than or equal to 0.3,-0.15 lt; yt; Yt; y is not equal to 0, and z is greater than or equal to 0 and less than or equal to 0.6. The rare-earth zirconate ceramic is non-stoichiometric rare-earth zirconate gadolinium-based ceramic, extra interstitial cation or cation vacancy defects generated when components deviate from a normal stoichiometric ratio and a microstructure generated by the defects are utilized, so that phonon scattering in the heat conduction process is greatly enhanced, and the heat conductivity of the material is remarkably reduced; meanwhile, by means of ytterbium doping or ytterbium and hafnium co-doping, the effect of optimizing the thermal and mechanical properties of the material is achieved in different lattice positions, and the requirement for the thermal barrier coating material with the continuously-improved temperature resistance requirement is met.
本发明属于锆酸盐陶瓷材料领域，具体涉及一种稀土锆酸盐陶瓷及其制备方法。本发明提供的稀土锆酸盐陶瓷，化学式为(Gd1‑xYbx)2+yZr2‑y‑zHfzO7‑0.5y，其中0
Non-stoichiometric rare earth zirconate ceramic and preparation method thereof
一种非化学计量比稀土锆酸盐陶瓷及其制备方法
XU JIE (author) / WU JINGZHI (author) / WANG HENGCHANG (author) / FAN FENGYING (author) / FENG XIAOYING (author) / GAO FENG (author)
2024-07-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Rare earth zirconate ceramic nano powder material and preparation method thereof
| European Patent Office | 2024
| European Patent Office | 2024
| European Patent Office | 2023