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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing ternary rare earth diboron dicarbon ceramic powder
The invention relates to the field of high-performance ceramics, in particular to a method for preparing ternary rare earth diboron dicarbon ceramic powder. A boron/carbon thermal reduction method is adopted, and boric acid rare earth powder, boron carbide powder and graphite powder are used as raw materials; the molar ratio of the boric acid rare earth powder to the boron carbide powder to the graphite powder is (3.5-4.5): (0.8-1.5): (17.5-20.5). The method comprises the following steps: firstly, weighing boric acid rare earth powder, boron carbide powder and graphite powder in proportion, and mixing for 6-12 hours by a physical and mechanical method; and then sintering in a sintering furnace filled with high-purity argon, wherein the heating rate is 5-20 DEG C/min, the sintering temperature is 1800-2200 DEG C, and the sintering time is 0.5-5 hours. The method is simple in process, and the high-purity ternary rare earth diboron dicarbon ceramic powder can be prepared.
本发明涉及高性能陶瓷领域，具体为一种制备三元稀土二硼二碳陶瓷粉体的方法。采用硼/碳热还原法，原料为硼酸稀土粉、碳化硼粉和石墨粉；其中，硼酸稀土粉、碳化硼粉和石墨粉的摩尔比为(3.5～4.5):(0.8～1.5):(17.5～20.5)。首先，将硼酸稀土粉、碳化硼粉和石墨粉按配比称重，经物理机械方法混合6～12小时；然后，在通有高纯氩气的烧结炉内进行烧结，升温速率为5～20℃/分钟，烧结温度为1800～2200℃，烧结时间为0.5～5小时。本发明方法工艺简单，能制备出高纯度的三元稀土二硼二碳陶瓷粉体。
Method for preparing ternary rare earth diboron dicarbon ceramic powder
The invention relates to the field of high-performance ceramics, in particular to a method for preparing ternary rare earth diboron dicarbon ceramic powder. A boron/carbon thermal reduction method is adopted, and boric acid rare earth powder, boron carbide powder and graphite powder are used as raw materials; the molar ratio of the boric acid rare earth powder to the boron carbide powder to the graphite powder is (3.5-4.5): (0.8-1.5): (17.5-20.5). The method comprises the following steps: firstly, weighing boric acid rare earth powder, boron carbide powder and graphite powder in proportion, and mixing for 6-12 hours by a physical and mechanical method; and then sintering in a sintering furnace filled with high-purity argon, wherein the heating rate is 5-20 DEG C/min, the sintering temperature is 1800-2200 DEG C, and the sintering time is 0.5-5 hours. The method is simple in process, and the high-purity ternary rare earth diboron dicarbon ceramic powder can be prepared.
本发明涉及高性能陶瓷领域，具体为一种制备三元稀土二硼二碳陶瓷粉体的方法。采用硼/碳热还原法，原料为硼酸稀土粉、碳化硼粉和石墨粉；其中，硼酸稀土粉、碳化硼粉和石墨粉的摩尔比为(3.5～4.5):(0.8～1.5):(17.5～20.5)。首先，将硼酸稀土粉、碳化硼粉和石墨粉按配比称重，经物理机械方法混合6～12小时；然后，在通有高纯氩气的烧结炉内进行烧结，升温速率为5～20℃/分钟，烧结温度为1800～2200℃，烧结时间为0.5～5小时。本发明方法工艺简单，能制备出高纯度的三元稀土二硼二碳陶瓷粉体。
Method for preparing ternary rare earth diboron dicarbon ceramic powder
一种制备三元稀土二硼二碳陶瓷粉体的方法
CHEN JIXIN (Autor:in) / LI ZHIHUI (Autor:in)
28.09.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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