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Preparation method for high-density hexagonal boron nitride ceramic material
A preparation method for a high-density hexagonal boron nitride (hBN) ceramic material. The method adopts ethyl orthosilicate as a raw material to coat a uniformly dispersed SiO2 nano-particle layer onto the surface of an hBN powder, then obtains the high-density hBN ceramic material by adopting a pressureless sintering method, wherein the relative density of the prepared hBN ceramic material reaches not less than 80%. The method achieves the uniform dispersion of the SiO2 sintering aid by coating SiO2 onto the surface of the hBN powder, obtains the high-density hBN ceramic in combination with high-temperature pressureless sintering, and improves the high-temperature operating temperature and high-temperature properties of the hBN while reducing the usage amount of SiO2.
Preparation method for high-density hexagonal boron nitride ceramic material
A preparation method for a high-density hexagonal boron nitride (hBN) ceramic material. The method adopts ethyl orthosilicate as a raw material to coat a uniformly dispersed SiO2 nano-particle layer onto the surface of an hBN powder, then obtains the high-density hBN ceramic material by adopting a pressureless sintering method, wherein the relative density of the prepared hBN ceramic material reaches not less than 80%. The method achieves the uniform dispersion of the SiO2 sintering aid by coating SiO2 onto the surface of the hBN powder, obtains the high-density hBN ceramic in combination with high-temperature pressureless sintering, and improves the high-temperature operating temperature and high-temperature properties of the hBN while reducing the usage amount of SiO2.
Preparation method for high-density hexagonal boron nitride ceramic material
JIANFENG ZHANG (author) / YUPING WU (author) / GAIYE LI (author) / WENMIN GUO (author)
2016-07-27
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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