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Porous silicon nitride/silicon carbide composite material and preparation method thereof
The invention discloses a porous silicon nitride/silicon carbide composite material and a preparation method thereof. The porous silicon nitride/silicon carbide composite material is provided with a silicon nitride whisker framework, and silicon carbide nanowires are filled in a surface layer and pores; the silicon carbide nanowire is synthesized in situ, and in-situ synthesis utilizes decomposition of carbon volatilized at high temperature, carbon left by pyrolysis and silicon nitride; the silicon nitride crystal whiskers are prepared from silicon nitride through high-temperature sintering, in-situ phase change and grain growth. The porous silicon nitride/silicon carbide composite material with a silicon nitride whisker skeleton and a structure in which silicon carbide nanowires are filled in the surface layer and pores is prepared by using unavoidable decomposition products and environmental impurities of silicon nitride in the sintering process, and the prepared material has an adjustable pore structure and surface appearance, is beneficial to cell adhesion and proliferation, and can be used for preparing the porous silicon nitride/silicon carbide composite material. Important application prospects are realized in the field of bone repair.
本发明公开了一种多孔氮化硅/碳化硅复合材料及其制备方法，本发明所述多孔氮化硅/碳化硅复合材料具有氮化硅晶须骨架，表层和孔隙填充碳化硅纳米线；所述碳化硅纳米线是原位合成，原位合成利用了高温挥发的碳、热解残留的碳和氮化硅的分解；氮化硅晶须是由氮化硅经高温烧结，原位发生相变和晶粒生长而成。本发明利用烧结过程中氮化硅不可避免的分解产物和环境杂质，制备具有氮化硅晶须骨架、表层和孔隙填充碳化硅纳米线的结构的多孔氮化硅/碳化硅复合材料，制备的材料具有可调的孔结构和表面形貌，有利于细胞粘附与增殖，在骨修复领域具有重要应用前景。
Porous silicon nitride/silicon carbide composite material and preparation method thereof
The invention discloses a porous silicon nitride/silicon carbide composite material and a preparation method thereof. The porous silicon nitride/silicon carbide composite material is provided with a silicon nitride whisker framework, and silicon carbide nanowires are filled in a surface layer and pores; the silicon carbide nanowire is synthesized in situ, and in-situ synthesis utilizes decomposition of carbon volatilized at high temperature, carbon left by pyrolysis and silicon nitride; the silicon nitride crystal whiskers are prepared from silicon nitride through high-temperature sintering, in-situ phase change and grain growth. The porous silicon nitride/silicon carbide composite material with a silicon nitride whisker skeleton and a structure in which silicon carbide nanowires are filled in the surface layer and pores is prepared by using unavoidable decomposition products and environmental impurities of silicon nitride in the sintering process, and the prepared material has an adjustable pore structure and surface appearance, is beneficial to cell adhesion and proliferation, and can be used for preparing the porous silicon nitride/silicon carbide composite material. Important application prospects are realized in the field of bone repair.
本发明公开了一种多孔氮化硅/碳化硅复合材料及其制备方法，本发明所述多孔氮化硅/碳化硅复合材料具有氮化硅晶须骨架，表层和孔隙填充碳化硅纳米线；所述碳化硅纳米线是原位合成，原位合成利用了高温挥发的碳、热解残留的碳和氮化硅的分解；氮化硅晶须是由氮化硅经高温烧结，原位发生相变和晶粒生长而成。本发明利用烧结过程中氮化硅不可避免的分解产物和环境杂质，制备具有氮化硅晶须骨架、表层和孔隙填充碳化硅纳米线的结构的多孔氮化硅/碳化硅复合材料，制备的材料具有可调的孔结构和表面形貌，有利于细胞粘附与增殖，在骨修复领域具有重要应用前景。
Porous silicon nitride/silicon carbide composite material and preparation method thereof
一种多孔氮化硅/碳化硅复合材料及其制备方法
QIAO ZHUHUI (author) / ZHANG LIZHI (author) / TANG HUAGUO (author) / YU YUAN (author) / WANG LUJIE (author) / LI TONGYANG (author)
2024-02-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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