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Silicon carbide whisker/aluminum oxide ceramic composite material and preparation method thereof
The invention relates to a silicon carbide whisker/aluminum oxide ceramic composite material and a preparation method thereof, and belongs to the technical field of aluminum oxide ceramics. The preparation method of the silicon carbide whisker/aluminum oxide ceramic composite material comprises the following steps: carrying out oscillation pressure sintering on composite powder to obtain the silicon carbide whisker/aluminum oxide ceramic composite material, the composite powder is composed of silicon carbide whiskers and aluminum oxide powder. According to the preparation method of the siliconcarbide whisker/aluminum oxide ceramic composite material, dynamic pressure sintering is achieved through oscillation pressure sintering, the densification process of a green body is accelerated through rearrangement, diffusion, migration and other mechanisms, discharging from closed pores in the grain boundary in the later period of sintering is accelerated, the relative density of the compositeceramic material can be better improved, and the mechanical property of the composite ceramic material is improved.
本发明涉及一种碳化硅晶须/氧化铝陶瓷复合材料及其制备方法，属于氧化铝陶瓷技术领域。本发明的碳化硅晶须/氧化铝陶瓷复合材料的制备方法，包括以下步骤：将复合粉体振荡压力烧结，即得；所述复合粉体由碳化硅晶须和氧化铝粉体组成。本发明的碳化硅晶须/氧化铝陶瓷复合材料的制备方法，利用振荡压力烧结实现动态压力烧结，通过重排、扩散和迁移等机制加快了坯体的致密化进程，加速了烧结后期晶界处闭气孔的排出，有助于提升复合陶瓷材料的相对密度，提高复合陶瓷材料的力学性能。
Silicon carbide whisker/aluminum oxide ceramic composite material and preparation method thereof
The invention relates to a silicon carbide whisker/aluminum oxide ceramic composite material and a preparation method thereof, and belongs to the technical field of aluminum oxide ceramics. The preparation method of the silicon carbide whisker/aluminum oxide ceramic composite material comprises the following steps: carrying out oscillation pressure sintering on composite powder to obtain the silicon carbide whisker/aluminum oxide ceramic composite material, the composite powder is composed of silicon carbide whiskers and aluminum oxide powder. According to the preparation method of the siliconcarbide whisker/aluminum oxide ceramic composite material, dynamic pressure sintering is achieved through oscillation pressure sintering, the densification process of a green body is accelerated through rearrangement, diffusion, migration and other mechanisms, discharging from closed pores in the grain boundary in the later period of sintering is accelerated, the relative density of the compositeceramic material can be better improved, and the mechanical property of the composite ceramic material is improved.
本发明涉及一种碳化硅晶须/氧化铝陶瓷复合材料及其制备方法，属于氧化铝陶瓷技术领域。本发明的碳化硅晶须/氧化铝陶瓷复合材料的制备方法，包括以下步骤：将复合粉体振荡压力烧结，即得；所述复合粉体由碳化硅晶须和氧化铝粉体组成。本发明的碳化硅晶须/氧化铝陶瓷复合材料的制备方法，利用振荡压力烧结实现动态压力烧结，通过重排、扩散和迁移等机制加快了坯体的致密化进程，加速了烧结后期晶界处闭气孔的排出，有助于提升复合陶瓷材料的相对密度，提高复合陶瓷材料的力学性能。
Silicon carbide whisker/aluminum oxide ceramic composite material and preparation method thereof
一种碳化硅晶须/氧化铝陶瓷复合材料及其制备方法
GUAN LI (Autor:in) / ZHANG RUI (Autor:in) / LI ZHE (Autor:in) / LI MINGLIANG (Autor:in) / CHEN JIAHUI (Autor:in) / FAN LEI (Autor:in) / YANG SHOULEI (Autor:in) / LI JIPENG (Autor:in) / GUO XIAOQIN (Autor:in) / AN LINAN (Autor:in)
06.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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