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Preparation method of compact hexagonal boron nitride ceramic material
The invention relates to a preparation method of a compact hexagonal boron nitride ceramic material, which comprises the following steps: (1) mixing hexagonal boron nitride powder, a Y source, a Si source and beta-Si3N4 whiskers to obtain raw material powder; the Si source is tetraethyl orthosilicate, or SiO2 powder and tetraethyl orthosilicate; the Y source is yttrium nitrate hexahydrate or yttrium nitrate hexahydrate and Y2O3 powder; and (2) carrying out presintering and hot pressed sintering on the raw material powder to obtain the compact hexagonal boron nitride ceramic material.
本发明涉及一种致密六方氮化硼陶瓷材料的制备方法，包括：（1）将六方氮化硼粉体、Y源、Si源、β‑Si3N4晶须进行混合，得到原料粉体；所述Si源为正硅酸乙酯、或SiO2粉和正硅酸乙酯；所述Y源为六水合硝酸钇、或六水合硝酸钇和Y2O3粉体；（2）将原料粉体经过预烧结和热压烧结，得到所述致密六方氮化硼陶瓷材料。
Preparation method of compact hexagonal boron nitride ceramic material
The invention relates to a preparation method of a compact hexagonal boron nitride ceramic material, which comprises the following steps: (1) mixing hexagonal boron nitride powder, a Y source, a Si source and beta-Si3N4 whiskers to obtain raw material powder; the Si source is tetraethyl orthosilicate, or SiO2 powder and tetraethyl orthosilicate; the Y source is yttrium nitrate hexahydrate or yttrium nitrate hexahydrate and Y2O3 powder; and (2) carrying out presintering and hot pressed sintering on the raw material powder to obtain the compact hexagonal boron nitride ceramic material.
本发明涉及一种致密六方氮化硼陶瓷材料的制备方法，包括：（1）将六方氮化硼粉体、Y源、Si源、β‑Si3N4晶须进行混合，得到原料粉体；所述Si源为正硅酸乙酯、或SiO2粉和正硅酸乙酯；所述Y源为六水合硝酸钇、或六水合硝酸钇和Y2O3粉体；（2）将原料粉体经过预烧结和热压烧结，得到所述致密六方氮化硼陶瓷材料。
Preparation method of compact hexagonal boron nitride ceramic material
一种致密六方氮化硼陶瓷材料的制备方法
ZENG YUPING (Autor:in) / YIN JINWEI (Autor:in) / XIA YONGFENG (Autor:in) / YAO DONGXU (Autor:in) / LIANG HANQIN (Autor:in)
18.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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