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High-strength carbon fiber enhanced boron nitride ceramic matrix composite and preparation method thereof
The invention discloses high-strength carbon fiber enhanced boron nitride ceramic matrix composite and a preparation method thereof. The high-strength carbon fiber enhanced boron nitride ceramic matrix composite is characterized by being prepared from raw materials in parts by weight as follows: 60-70 parts of boron nitride, 5-8 parts of iridium trioxide, 5-8 parts of hafnium carbide, 8-12 parts of manganese powder, 10-14 parts of modified high-elastic carbon fiber, 0.03-0.05 parts of ammonium persulfate, 5-7 parts of acrylic acid, 0.3-0.5 parts of dimethylaminopropylamine, 10-12 parts of light calcium carbonate, 2-3 parts of chitosan, 20-30 parts of ethanol and 40-60 parts of deionized water. With modified high-strength carbon fiber as an enhancing phase, the high-strength carbon fiber enhanced boron nitride ceramic matrix composite has the advantages of excellent oxidation resistance, improvement of ceramic toughness and strength, high-temperature and low-temperature resistance, good thermal conductivity and small expansion coefficient; the surface of a blank body is coated with the added iridium trioxide and hafnium carbide, and accordingly, the sintering performance is improved.
High-strength carbon fiber enhanced boron nitride ceramic matrix composite and preparation method thereof
The invention discloses high-strength carbon fiber enhanced boron nitride ceramic matrix composite and a preparation method thereof. The high-strength carbon fiber enhanced boron nitride ceramic matrix composite is characterized by being prepared from raw materials in parts by weight as follows: 60-70 parts of boron nitride, 5-8 parts of iridium trioxide, 5-8 parts of hafnium carbide, 8-12 parts of manganese powder, 10-14 parts of modified high-elastic carbon fiber, 0.03-0.05 parts of ammonium persulfate, 5-7 parts of acrylic acid, 0.3-0.5 parts of dimethylaminopropylamine, 10-12 parts of light calcium carbonate, 2-3 parts of chitosan, 20-30 parts of ethanol and 40-60 parts of deionized water. With modified high-strength carbon fiber as an enhancing phase, the high-strength carbon fiber enhanced boron nitride ceramic matrix composite has the advantages of excellent oxidation resistance, improvement of ceramic toughness and strength, high-temperature and low-temperature resistance, good thermal conductivity and small expansion coefficient; the surface of a blank body is coated with the added iridium trioxide and hafnium carbide, and accordingly, the sintering performance is improved.
High-strength carbon fiber enhanced boron nitride ceramic matrix composite and preparation method thereof
SHU XIAOSHAN (Autor:in) / ZHANG JIANWU (Autor:in) / GONG PING (Autor:in) / TANG XINGYOU (Autor:in)
29.07.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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