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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 (Autor:in) / ZHAO XIAOFENG (Autor:in) / NI NA (Autor:in) / CAI HUANGYUE (Autor:in) / YAO YAO (Autor:in) / YI MEIYU (Autor:in) / GUO FANGWEI (Autor:in)
23.11.2021
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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