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Thermal spraying spherical high-entropy rare earth zirconate powder and preparation method thereof
The invention discloses thermal spraying spherical high-entropy rare earth zirconate powder and a preparation method thereof. The invention relates to the technical field of high-entropy ceramic thermal barrier coatings. The chemical composition of the high-entropy rare earth zirconate powder is (Ce0. 2Dy0. 2Sm0. 2Eu0. 2Yb0. 2) 2Zr2O7, a rare earth salt solution and a zirconium salt solution are mixed according to a molar ratio and then are uniformly stirred, ammonia water is used as a precipitator to prepare a precipitate, then the precipitate is subjected to ceramic membrane separation and filter pressing treatment, granulation is performed after nitric acid size mixing, and the high-entropy rare earth zirconate powder is obtained. And finally, carrying out heat treatment to obtain the high-entropy rare earth zirconate powder with the spherical nanostructure. According to the method, the precursor is prepared into the slurry, the slurry is granulated, and finally the calcination treatment is performed, so that compared with other granulation methods, the technological process is simplified, the cost is reduced, and the nano powder with good fluidity, small size and high density is obtained.
本发明公开了一种热喷涂球形高熵稀土锆酸盐粉体及其制备方法。本发明涉及高熵陶瓷热障涂层技术领域。高熵稀土锆酸盐粉体的化学组成为(Ce0.2Dy0.2Sm0.2Eu0.2Yb0.2)2Zr2O7，将稀土盐溶液与锆盐溶液按摩尔比混合后搅拌均匀，以氨水作为沉淀剂制备沉淀物，后将沉淀物通过陶瓷膜分离和压滤处理，经硝酸调浆后造粒，最后进行热处理得到球形纳米结构的高熵稀土锆酸盐粉体。该方法通过前驱体调制成浆料造粒最后进行煅烧处理，与其他造粒方法相比简化了工艺流程，降低了成本，得到流动性好、尺寸小、致密度高的纳米粉体。
Thermal spraying spherical high-entropy rare earth zirconate powder and preparation method thereof
The invention discloses thermal spraying spherical high-entropy rare earth zirconate powder and a preparation method thereof. The invention relates to the technical field of high-entropy ceramic thermal barrier coatings. The chemical composition of the high-entropy rare earth zirconate powder is (Ce0. 2Dy0. 2Sm0. 2Eu0. 2Yb0. 2) 2Zr2O7, a rare earth salt solution and a zirconium salt solution are mixed according to a molar ratio and then are uniformly stirred, ammonia water is used as a precipitator to prepare a precipitate, then the precipitate is subjected to ceramic membrane separation and filter pressing treatment, granulation is performed after nitric acid size mixing, and the high-entropy rare earth zirconate powder is obtained. And finally, carrying out heat treatment to obtain the high-entropy rare earth zirconate powder with the spherical nanostructure. According to the method, the precursor is prepared into the slurry, the slurry is granulated, and finally the calcination treatment is performed, so that compared with other granulation methods, the technological process is simplified, the cost is reduced, and the nano powder with good fluidity, small size and high density is obtained.
本发明公开了一种热喷涂球形高熵稀土锆酸盐粉体及其制备方法。本发明涉及高熵陶瓷热障涂层技术领域。高熵稀土锆酸盐粉体的化学组成为(Ce0.2Dy0.2Sm0.2Eu0.2Yb0.2)2Zr2O7，将稀土盐溶液与锆盐溶液按摩尔比混合后搅拌均匀，以氨水作为沉淀剂制备沉淀物，后将沉淀物通过陶瓷膜分离和压滤处理，经硝酸调浆后造粒，最后进行热处理得到球形纳米结构的高熵稀土锆酸盐粉体。该方法通过前驱体调制成浆料造粒最后进行煅烧处理，与其他造粒方法相比简化了工艺流程，降低了成本，得到流动性好、尺寸小、致密度高的纳米粉体。
Thermal spraying spherical high-entropy rare earth zirconate powder and preparation method thereof
一种热喷涂球形高熵稀土锆酸盐粉体及其制备方法
YANG JING (Autor:in) / JIN HONGYUN (Autor:in) / HONG JIANHE (Autor:in) / LI KAIYUN (Autor:in) / ZHANG SHENG (Autor:in) / WEI BENBEN (Autor:in) / WANG XUAN (Autor:in) / YANG BO (Autor:in)
02.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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