Multi-component rare earth boride (LaxCe1-x)B6 solid solution polycrystalline cathode material and preparation method thereof
A rare earth boride and cathode material technology, applied in the direction of boron/boride, metal boride, etc., can solve the problems of low product purity and density, high technical difficulty, affecting performance, etc., achieve high purity and density, and expand applications Field, the effect of easy operation
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Embodiment 1
[0031] 1) Classified ball mill + hand mixing. LaB 6 and CeB 6 20g each of the raw material powder is placed in a stainless steel grinding tank, and stainless steel balls of φ12mm, φ10mm, φ8mm and φ6mm are selected as the grinding medium. The mass ratio of powder to powder is 10:1. In order to prevent the boron powder in the mixed powder from being oxidized, the above operations are all carried out in an argon atmosphere glove box with an oxygen content and a water vapor content of ≤0.5ppm. The ball mill jar was placed in a high-energy ball mill for ball milling at a speed of 500 r / min. After ball milling for 2 hours, samples were stored in a glove box. LaB obtained by ball milling in the glove box 6 and CeB 6 The powder is weighed respectively at a molar ratio of 9:1, the total mass of the powder is 10g, and the weighed LaB 6 and CeB 6 The powder is placed in an agate mortar for manual grinding and mixing. 2) Load the furnace. The above-mentioned mixed reaction materi...
Embodiment 2
[0034] 1) Classified ball mill + hand mixing. LaB 6 and CeB 6 The raw material powder is placed in a stainless steel grinding tank respectively, and stainless steel balls of φ12mm, φ10mm, φ8mm and φ6mm are selected as the grinding medium. The material mass ratio is 20:1. In order to prevent the boron powder in the mixed powder from being oxidized, the above operations were all carried out in an argon atmosphere glove box with oxygen content and water vapor content ≤ 6ppm. The ball mill jar was placed in a high-energy ball mill for ball milling at a speed of 700 r / min, and samples were stored in a glove box after ball milling for 1 hour. LaB obtained by ball milling in the glove box 6 and CeB 6 The powder is weighed respectively at a molar ratio of 4:1, the total mass of the powder is 10g, and the weighed LaB 6 and CeB 6 The powder is placed in an agate mortar for manual grinding and mixing. 2) Load the furnace. The above-mentioned mixed reaction materials were loaded ...
Embodiment 3
[0037] 1) Mixing ball milling. The LaB after weighing respectively with a molar ratio of 7:3 6 and CeB 6 A total of 20g of raw material powder is placed in a stainless steel grinding tank. Stainless steel balls of φ12mm, φ10mm, φ8mm and φ6mm are selected as grinding media. The mass ratio of stainless steel balls of φ12mm, φ10mm, φ8mm and φ6mm is 1:2:2:1 The mass ratio of the ball to the powder is 15:1; in order to prevent the boron powder in the mixed powder from being oxidized, the above operations are all carried out in an argon atmosphere glove box with an oxygen content and a water vapor content of ≤1ppm. The ball mill jar was placed in a high-energy ball mill for ball milling at a speed of 600r / min. After ball milling for 1.5h, samples were stored in a glove box. 2) Load the furnace. The above-mentioned mixed reaction materials were loaded into a φ20mm graphite mold in a glove box, and the mold was placed in a hot-press sintering furnace. 3) Heating and sintering. Va...
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