Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rare earth tantalate (RE3TaO7) thermal barrier coating and preparation method thereof
The invention relates to the technical field of thermal barrier coatings, and particularly discloses a rare earth tantalate (RE3TaO7) thermal barrier coating and a preparation method thereof. Tantalate ceramic powder of more than two different rare earth elements is taken and mixed into n parts of mixed ceramic powder; the volume fraction of at least more than one tantalate ceramic component in the n parts of mixed ceramic powder is continuously increased or decreased; and sequentially depositing n parts of mixed ceramic powder on the base material to obtain the multi-gradient rare earth tantalate thermal barrier coating. The multi-element gradient coating is obtained by designing tantalate ceramic powder of more than two different rare earth elements, that is, the volume fraction of at least one ceramic component in the coating is continuously increased or continuously decreased, so that the thermal barrier coating has a high expansion coefficient of the original rare earth tantalate(RE3TaO7). Meanwhile, the heat conductivity is also greatly reduced.
本发明涉及热障涂层技术领域，具体公开了一种稀土钽酸盐(RE3TaO7)热障涂层及其制备方法，取两种以上不同稀土元素的钽酸盐陶瓷粉末混合成n份混合陶瓷粉体，n份混合陶瓷粉体中至少一种以上的钽酸盐陶瓷组份的体积分数为连续递增或递减的变化；将n份混合陶瓷粉体依次沉积到基体材料上得到多元梯度的稀土钽酸盐热障涂层。本专利中通过对两种以上不同稀土元素的钽酸盐陶瓷粉末进行设计，得到多元梯度涂层，即涂层中至少一种陶瓷组份的体积分数是在连续的递增或连续的递减变化，这样的方式能够保证热障涂层具备原本稀土钽酸盐(RE3TaO7)的高膨胀系数，同时其热导率也大幅度的下降。
Rare earth tantalate (RE3TaO7) thermal barrier coating and preparation method thereof
The invention relates to the technical field of thermal barrier coatings, and particularly discloses a rare earth tantalate (RE3TaO7) thermal barrier coating and a preparation method thereof. Tantalate ceramic powder of more than two different rare earth elements is taken and mixed into n parts of mixed ceramic powder; the volume fraction of at least more than one tantalate ceramic component in the n parts of mixed ceramic powder is continuously increased or decreased; and sequentially depositing n parts of mixed ceramic powder on the base material to obtain the multi-gradient rare earth tantalate thermal barrier coating. The multi-element gradient coating is obtained by designing tantalate ceramic powder of more than two different rare earth elements, that is, the volume fraction of at least one ceramic component in the coating is continuously increased or continuously decreased, so that the thermal barrier coating has a high expansion coefficient of the original rare earth tantalate(RE3TaO7). Meanwhile, the heat conductivity is also greatly reduced.
本发明涉及热障涂层技术领域，具体公开了一种稀土钽酸盐(RE3TaO7)热障涂层及其制备方法，取两种以上不同稀土元素的钽酸盐陶瓷粉末混合成n份混合陶瓷粉体，n份混合陶瓷粉体中至少一种以上的钽酸盐陶瓷组份的体积分数为连续递增或递减的变化；将n份混合陶瓷粉体依次沉积到基体材料上得到多元梯度的稀土钽酸盐热障涂层。本专利中通过对两种以上不同稀土元素的钽酸盐陶瓷粉末进行设计，得到多元梯度涂层，即涂层中至少一种陶瓷组份的体积分数是在连续的递增或连续的递减变化，这样的方式能够保证热障涂层具备原本稀土钽酸盐(RE3TaO7)的高膨胀系数，同时其热导率也大幅度的下降。
Rare earth tantalate (RE3TaO7) thermal barrier coating and preparation method thereof
一种稀土钽酸盐(RE3TaO7)热障涂层及其制备方法
FENG JING (Autor:in) / ZHENG QI (Autor:in) / CHEN LIN (Autor:in) / WANG YITAO (Autor:in) / YANG KAILONG (Autor:in) / WANG JUN (Autor:in) / ZHANG ZHIDONG (Autor:in) / LI ZHENJUN (Autor:in) / WANG FENG (Autor:in)
10.11.2020
Patent
Elektronische Ressource
Chinesisch
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