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Silicon carbide reinforced silicon nitride ceramic and preparation method thereof
The invention discloses silicon carbide reinforced silicon nitride ceramic and a preparation method thereof, and relates to the technical field of ceramic materials. According to the preparation method, the silicon powder is subjected to heating surface oxidation treatment, so that a SiO2 layer with relatively low absorbance and refractive index is formed on the surface of the silicon powder, the introduced oxygen content is removed through carbon thermal reduction, and meanwhile, the silicon carbide phase reinforced silicon nitride ceramic is generated. The silicon nitride ceramic prepared by taking the silicon powder as the raw material through a reaction sintering method has the characteristic of low shrinkage distortion, and the preparation of the silicon carbide reinforced silicon nitride ceramic with a complex shape can be realized by matching with a photocuring molding technology.
本发明公开了一种碳化硅增强氮化硅陶瓷及其制备方法，涉及陶瓷材料技术领域。本发明的制备方法，通过对硅粉进行加热表面氧化处理，使得硅粉表面形成一层吸光度和折射率均相对较低的SiO2层，并且将引入的氧含量通过碳热还原除去，同时生成碳化硅相增强氮化硅陶瓷。本发明以硅粉作为原料通过反应烧结方法制备得到的氮化硅陶瓷具有收缩变形低的特点，配合光固化成型技术，可以实现复杂形状的碳化硅增强氮化硅陶瓷的制备。
Silicon carbide reinforced silicon nitride ceramic and preparation method thereof
The invention discloses silicon carbide reinforced silicon nitride ceramic and a preparation method thereof, and relates to the technical field of ceramic materials. According to the preparation method, the silicon powder is subjected to heating surface oxidation treatment, so that a SiO2 layer with relatively low absorbance and refractive index is formed on the surface of the silicon powder, the introduced oxygen content is removed through carbon thermal reduction, and meanwhile, the silicon carbide phase reinforced silicon nitride ceramic is generated. The silicon nitride ceramic prepared by taking the silicon powder as the raw material through a reaction sintering method has the characteristic of low shrinkage distortion, and the preparation of the silicon carbide reinforced silicon nitride ceramic with a complex shape can be realized by matching with a photocuring molding technology.
本发明公开了一种碳化硅增强氮化硅陶瓷及其制备方法，涉及陶瓷材料技术领域。本发明的制备方法，通过对硅粉进行加热表面氧化处理，使得硅粉表面形成一层吸光度和折射率均相对较低的SiO2层，并且将引入的氧含量通过碳热还原除去，同时生成碳化硅相增强氮化硅陶瓷。本发明以硅粉作为原料通过反应烧结方法制备得到的氮化硅陶瓷具有收缩变形低的特点，配合光固化成型技术，可以实现复杂形状的碳化硅增强氮化硅陶瓷的制备。
Silicon carbide reinforced silicon nitride ceramic and preparation method thereof
一种碳化硅增强氮化硅陶瓷及其制备方法
WU SHANGHUA (author) / HUANG ZHAOQUAN (author) / LIN LIFU (author) / WU HAIDONG (author)
2021-10-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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