Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Scandium-doped gadolinium tantalate thermal barrier coating ceramic material as well as preparation method and application thereof
The invention provides a preparation method and application of a scandium-doped gadolinium tantalate thermal barrier coating ceramic material, the chemical formula of the thermal barrier coating ceramic material is (Gd1-xScx) TaO4, n (Gd): n (Sc): n (Ta) = 1-x: x: 1, and the numerical range of x is 0.2-0.4; the thermal barrier coating ceramic material is synthesized from Gd2O3 powder, Sc2O3 powder and Ta2O5 powder through a high-temperature solid-phase reaction method, and the purity of the Gd2O3 powder, the purity of the Sc2O3 powder and the purity of the Ta2O5 powder are all larger than or equal to 99.9%. The scandium-doped gadolinium tantalate is adopted, scandium serves as a same-family element of lanthanide elements and has properties similar to those of the lanthanide elements, in addition, Sc < 3 + > and Gd < 3 + > are greatly different in ion radius and ion mass, lattice distortion can be effectively caused, and the heat conductivity can be effectively reduced.
本发明提供了一种掺杂钪的钽酸钆热障涂层陶瓷材料的制备方法及其应用，本发明的热障涂层陶瓷材料的化学式为(Gd1‑xScx)TaO4，其中n(Gd)：n(Sc)：n(Ta)=1‑x：x：1，x的数值范围为0.2‑0.4；热障涂层陶瓷材料由Gd2O3粉末、Sc2O3粉末以及Ta2O5粉末通过高温固相反应法合成，Gd2O3粉末、Sc2O3粉末及Ta2O5粉末的纯度均≥99.9%。本发明采用钪掺杂钽酸钆，钪作为镧系元素的同族元素，具有与镧系元素相似的性质，另外，Sc3+与Gd3+在离子半径和离子质量上都存在较大差异，可以有效引起晶格畸变，降低热导率。
Scandium-doped gadolinium tantalate thermal barrier coating ceramic material as well as preparation method and application thereof
The invention provides a preparation method and application of a scandium-doped gadolinium tantalate thermal barrier coating ceramic material, the chemical formula of the thermal barrier coating ceramic material is (Gd1-xScx) TaO4, n (Gd): n (Sc): n (Ta) = 1-x: x: 1, and the numerical range of x is 0.2-0.4; the thermal barrier coating ceramic material is synthesized from Gd2O3 powder, Sc2O3 powder and Ta2O5 powder through a high-temperature solid-phase reaction method, and the purity of the Gd2O3 powder, the purity of the Sc2O3 powder and the purity of the Ta2O5 powder are all larger than or equal to 99.9%. The scandium-doped gadolinium tantalate is adopted, scandium serves as a same-family element of lanthanide elements and has properties similar to those of the lanthanide elements, in addition, Sc < 3 + > and Gd < 3 + > are greatly different in ion radius and ion mass, lattice distortion can be effectively caused, and the heat conductivity can be effectively reduced.
本发明提供了一种掺杂钪的钽酸钆热障涂层陶瓷材料的制备方法及其应用，本发明的热障涂层陶瓷材料的化学式为(Gd1‑xScx)TaO4，其中n(Gd)：n(Sc)：n(Ta)=1‑x：x：1，x的数值范围为0.2‑0.4；热障涂层陶瓷材料由Gd2O3粉末、Sc2O3粉末以及Ta2O5粉末通过高温固相反应法合成，Gd2O3粉末、Sc2O3粉末及Ta2O5粉末的纯度均≥99.9%。本发明采用钪掺杂钽酸钆，钪作为镧系元素的同族元素，具有与镧系元素相似的性质，另外，Sc3+与Gd3+在离子半径和离子质量上都存在较大差异，可以有效引起晶格畸变，降低热导率。
Scandium-doped gadolinium tantalate thermal barrier coating ceramic material as well as preparation method and application thereof
掺杂钪的钽酸钆热障涂层陶瓷材料及其制备方法与应用
LIANG WENPING (Autor:in) / LIU XINLI (Autor:in) / MIAO QIANG (Autor:in) / YAN RONGXUE (Autor:in) / ZANG KAI (Autor:in) / TAN XIAOQI (Autor:in)
27.09.2024
Patent
Elektronische Ressource
Chinesisch
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