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High-entropy rare earth tantalate hollow sphere powder and preparation method thereof
The invention discloses high-entropy rare earth tantalate hollow sphere powder, which is prepared from tantalum pentoxide Ta2O5, oxides of at least two elements in lanthanum-base rare earth elements, or oxides of at least one element in lanthanum-base rare earth elements and oxides of at least one element in Y or Al through a centrifugal spray granulation method, wherein the chemical reaction formula is defined in the specification, xrepresents the number of trivalent oxides, and greater than or equal to 2, RE is Y, Al or lanthanum-base rare earth elements, the molar ratio of each element oxide to tantalum pentoxide is 3/x: 3/x: 3/x...:1, and the particle size of the hollow sphere powder is 10-100 [mu]m. The rare earth tantalate hollow sphere powder is high in spherical rate, good in fluidity, high in hollow rate and uniform in particle size.
本发明公开了一种高熵稀土钽酸盐空心球粉体，五氧化二钽Ta2O5，和镧系稀土元素中的至少两种元素的氧化物、或镧系稀土元素中至少一种元素的氧化物以及Y或Al中的至少一种元素的氧化物制备而成，且采用离心式喷雾造粒法制备，其化学反应式为：其中：x表示三价氧化物的种数，x≥2；RE为Y、Al或镧系稀土元素；各元素氧化物和五氧化二钽之间的摩尔比为3/x:3/x:3/x……：1，空心球粉体的粒径为10μm～100μm。该稀土钽酸盐空心球粉体球形率高，流动性好，空心率高、粒径均匀。
High-entropy rare earth tantalate hollow sphere powder and preparation method thereof
The invention discloses high-entropy rare earth tantalate hollow sphere powder, which is prepared from tantalum pentoxide Ta2O5, oxides of at least two elements in lanthanum-base rare earth elements, or oxides of at least one element in lanthanum-base rare earth elements and oxides of at least one element in Y or Al through a centrifugal spray granulation method, wherein the chemical reaction formula is defined in the specification, xrepresents the number of trivalent oxides, and greater than or equal to 2, RE is Y, Al or lanthanum-base rare earth elements, the molar ratio of each element oxide to tantalum pentoxide is 3/x: 3/x: 3/x...:1, and the particle size of the hollow sphere powder is 10-100 [mu]m. The rare earth tantalate hollow sphere powder is high in spherical rate, good in fluidity, high in hollow rate and uniform in particle size.
本发明公开了一种高熵稀土钽酸盐空心球粉体，五氧化二钽Ta2O5，和镧系稀土元素中的至少两种元素的氧化物、或镧系稀土元素中至少一种元素的氧化物以及Y或Al中的至少一种元素的氧化物制备而成，且采用离心式喷雾造粒法制备，其化学反应式为：其中：x表示三价氧化物的种数，x≥2；RE为Y、Al或镧系稀土元素；各元素氧化物和五氧化二钽之间的摩尔比为3/x:3/x:3/x……：1，空心球粉体的粒径为10μm～100μm。该稀土钽酸盐空心球粉体球形率高，流动性好，空心率高、粒径均匀。
High-entropy rare earth tantalate hollow sphere powder and preparation method thereof
一种高熵稀土钽酸盐空心球粉体及制备方法
FENG JING (author) / WANG JUN (author) / QU CHENKAI (author) / LI ZHENJUN (author) / WANG FENG (author)
2021-12-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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