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Preparation method of Si3N4/h-BN nano-composite ceramics
The invention discloses a preparation method of Si3N4/h-BN nano-composite ceramics. According to the method, tributyl borate and tetraethyl orthosilicate are taken as raw materials, commercial h-BN powder is coated with a nano-B2O3 layer and a SiO2 layer sequentially, and then the Si3N4/h-BN nano-composite ceramics are obtained with a pressureless sintering technology. The preparation method is simple to operate, process conditions are easy to control, the cost is low and the method is suitable for industrial production; the h-BN powder is coated with the B2O3 layer and the SiO2 layer, so that chemical modification of the h-BN powder is realized, in-situ nanocrystallization of h-BN particles is realized in combination with the pressureless sintering technology, and accordingly, the Si3N4/h-BN nano-composite ceramics with good mechanical properties are prepared.
Preparation method of Si3N4/h-BN nano-composite ceramics
The invention discloses a preparation method of Si3N4/h-BN nano-composite ceramics. According to the method, tributyl borate and tetraethyl orthosilicate are taken as raw materials, commercial h-BN powder is coated with a nano-B2O3 layer and a SiO2 layer sequentially, and then the Si3N4/h-BN nano-composite ceramics are obtained with a pressureless sintering technology. The preparation method is simple to operate, process conditions are easy to control, the cost is low and the method is suitable for industrial production; the h-BN powder is coated with the B2O3 layer and the SiO2 layer, so that chemical modification of the h-BN powder is realized, in-situ nanocrystallization of h-BN particles is realized in combination with the pressureless sintering technology, and accordingly, the Si3N4/h-BN nano-composite ceramics with good mechanical properties are prepared.
Preparation method of Si3N4/h-BN nano-composite ceramics
LI YONGFENG (Autor:in) / LIU WEIHONG (Autor:in) / ZHANG BO (Autor:in) / SHANG SHIGUANG (Autor:in) / ZHAO PING (Autor:in)
27.01.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2024
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