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Graphene-reinforced silicon-boron-carbon-nitrogen ceramic composite material and preparation method thereof
The invention relates to a graphene-reinforced silicon-boron-carbon-nitrogen ceramic composite material and a preparation method thereof. The invention aims to solve the problems of low strength, poor ductility and uncertain thermal shock and ablation mechanisms in the existing silicon-boron-carbon-nitrogen ceramic composite material. The product is prepared from 90-99 parts by volume of SiBCN amorphous powder and 1-10 parts by volume of graphene. The method comprises the following steps: 1. adding silicon powder, graphite and hexagonal boron nitride into a ball mill, and carrying out ball milling in an argon protective atmosphere to obtain SiBCN amorphous powder; 2. uniformly mixing the SiBCN amorphous powder and graphene by ball milling to obtain mixed powder; and 3 carrying out discharge plasma sintering on the mixed power to obtain the graphene-reinforced silicon-boron-carbon-nitrogen ceramic composite material.
Graphene-reinforced silicon-boron-carbon-nitrogen ceramic composite material and preparation method thereof
The invention relates to a graphene-reinforced silicon-boron-carbon-nitrogen ceramic composite material and a preparation method thereof. The invention aims to solve the problems of low strength, poor ductility and uncertain thermal shock and ablation mechanisms in the existing silicon-boron-carbon-nitrogen ceramic composite material. The product is prepared from 90-99 parts by volume of SiBCN amorphous powder and 1-10 parts by volume of graphene. The method comprises the following steps: 1. adding silicon powder, graphite and hexagonal boron nitride into a ball mill, and carrying out ball milling in an argon protective atmosphere to obtain SiBCN amorphous powder; 2. uniformly mixing the SiBCN amorphous powder and graphene by ball milling to obtain mixed powder; and 3 carrying out discharge plasma sintering on the mixed power to obtain the graphene-reinforced silicon-boron-carbon-nitrogen ceramic composite material.
Graphene-reinforced silicon-boron-carbon-nitrogen ceramic composite material and preparation method thereof
YANG ZHIHUA (Autor:in) / LI DAXIN (Autor:in) / JIA DECHANG (Autor:in) / ZHOU YU (Autor:in) / LIANG BIN (Autor:in) / WANG SHENGJIN (Autor:in) / CAI DELONG (Autor:in)
22.04.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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