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RE-Zr (Hf) co-doped gadolinium zirconate material, preparation method and thermal barrier coating
The invention discloses an RE-Zr (Hf) co-doped Gd2Zr2O7 material. The chemical formula of the RE-Zr (Hf) co-doped Gd2Zr2O7 material is (Gd < 1-x > RE < x >) < 2-z > (Zr < 1-y > Hfy) < 2 + z > O < 7 + delta >, wherein x is the content of doped RE element, y is the content of doped Hf and/or excessive Zr, z represents the stoichiometric ratio between (Gd + RE) and Zr (Hf), and delta is the concentration of oxygen vacancy caused by doping of the RE element; wherein 0 < = x < = 1, 0 < = y < = 1, 0 < = z < = 2, and 0 < = delta < = 1. The RE element and the Zr (Hf) are co-doped in the Gd2Zr2O7, so that the fracture toughness and the thermal expansion coefficient of the material can be improved, the thermal conductivity of the material can be reduced, and a thermal barrier coating prepared from the RE-Zr (Hf) co-doped Gd2Zr2O7 material has excellent thermal properties and mechanical properties, so that the thermal barrier coating can better play a thermal protection role.
本发明公开了一种RE‑Zr(Hf)共掺杂Gd2Zr2O7材料，所述RE‑Zr(Hf)共掺杂Gd2Zr2O7材料的化学式为(Gd1‑xREx)2‑z(Zr1‑yHfy)2+zO7+δ；其中，x为掺杂RE元素的含量，y为掺杂Hf和/或过量的Zr的含量，z表征了(Gd+RE)与Zr(Hf)之间的化学计量比，δ为掺杂所述RE元素所导致的氧空位的浓度；其中，0≤x≤1，0≤y≤1，0≤z≤2，0≤δ≤1。本发明通过在Gd2Zr2O7中共同掺杂RE元素和Zr(Hf)，能够在提高材料的断裂韧性和热膨胀系数的同时，还能降低材料的热导率，使得由RE‑Zr(Hf)共掺杂Gd2Zr2O7材料制成的热障涂层，具有的优异热学性能和力学性能，从而能够更好地发挥热防护的作用。
RE-Zr (Hf) co-doped gadolinium zirconate material, preparation method and thermal barrier coating
The invention discloses an RE-Zr (Hf) co-doped Gd2Zr2O7 material. The chemical formula of the RE-Zr (Hf) co-doped Gd2Zr2O7 material is (Gd < 1-x > RE < x >) < 2-z > (Zr < 1-y > Hfy) < 2 + z > O < 7 + delta >, wherein x is the content of doped RE element, y is the content of doped Hf and/or excessive Zr, z represents the stoichiometric ratio between (Gd + RE) and Zr (Hf), and delta is the concentration of oxygen vacancy caused by doping of the RE element; wherein 0 < = x < = 1, 0 < = y < = 1, 0 < = z < = 2, and 0 < = delta < = 1. The RE element and the Zr (Hf) are co-doped in the Gd2Zr2O7, so that the fracture toughness and the thermal expansion coefficient of the material can be improved, the thermal conductivity of the material can be reduced, and a thermal barrier coating prepared from the RE-Zr (Hf) co-doped Gd2Zr2O7 material has excellent thermal properties and mechanical properties, so that the thermal barrier coating can better play a thermal protection role.
本发明公开了一种RE‑Zr(Hf)共掺杂Gd2Zr2O7材料，所述RE‑Zr(Hf)共掺杂Gd2Zr2O7材料的化学式为(Gd1‑xREx)2‑z(Zr1‑yHfy)2+zO7+δ；其中，x为掺杂RE元素的含量，y为掺杂Hf和/或过量的Zr的含量，z表征了(Gd+RE)与Zr(Hf)之间的化学计量比，δ为掺杂所述RE元素所导致的氧空位的浓度；其中，0≤x≤1，0≤y≤1，0≤z≤2，0≤δ≤1。本发明通过在Gd2Zr2O7中共同掺杂RE元素和Zr(Hf)，能够在提高材料的断裂韧性和热膨胀系数的同时，还能降低材料的热导率，使得由RE‑Zr(Hf)共掺杂Gd2Zr2O7材料制成的热障涂层，具有的优异热学性能和力学性能，从而能够更好地发挥热防护的作用。
RE-Zr (Hf) co-doped gadolinium zirconate material, preparation method and thermal barrier coating
一种RE-Zr(Hf)共掺杂锆酸钆材料、制备方法以及热障涂层
WANG XINGMING (author) / LIU YUYANG (author) / WANG XINGQI (author) / CHU MAOYOU (author) / BAI XUE (author) / PENG CHENG (author)
2022-09-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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