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Method for preparation of dense HfC(Si)—HfB2 composite ceramic
A method for the preparation of a dense HfC(Si)—HfB2 composite ceramic. hafnium oxide powders, nano-sized carbon black and silicon hexaboride powders are mixed in a molar ratio of (1-10):(1-20):(1-5) to obtain a powder mixture. The powder mixture is subjected to ball milling, dried and transferred to a graphite mold for spark plasma sintering. In this way, an in-situ carbon-boron reduction reaction and the sintering densification are completed in one step, and the obtained HfC(Si)—HfB2 composite ceramic has a density of 94.0%-100% and uniformly dispersed grains.
Method for preparation of dense HfC(Si)—HfB2 composite ceramic
A method for the preparation of a dense HfC(Si)—HfB2 composite ceramic. hafnium oxide powders, nano-sized carbon black and silicon hexaboride powders are mixed in a molar ratio of (1-10):(1-20):(1-5) to obtain a powder mixture. The powder mixture is subjected to ball milling, dried and transferred to a graphite mold for spark plasma sintering. In this way, an in-situ carbon-boron reduction reaction and the sintering densification are completed in one step, and the obtained HfC(Si)—HfB2 composite ceramic has a density of 94.0%-100% and uniformly dispersed grains.
Method for preparation of dense HfC(Si)—HfB2 composite ceramic
HAO WEI (author) / ZHAO XIAOFENG (author) / NI NA (author) / CAI HUANGYUE (author) / YAO YAO (author) / YI MEIYU (author) / GUO FANGWEI (author)
2021-11-23
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
METHOD FOR PREPARATION OF DENSE HfC(Si)-HfB2 COMPOSITE CERAMIC
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