Factors that influence the flexural strength of SiC-based porous ceramics used for hot gas filter support
Factors that influence the flexural strength of SiC-based porous ceramics used for hot gas filter support
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DOI：
10.1016/j.jeurceramsoc.2010.11.033
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发表时间：
2011-05
影响因子：
5.7
通讯作者：
Junfeng Li;Hong Lin;Jianbao Li
中科院分区：
文献类型：
--
作者：
Junfeng Li;Hong Lin;Jianbao Li
基于SiC基多孔陶瓷的断口形貌，研究了成型压力、粘结相含量和SiC颗粒尺寸对SiC基多孔陶瓷抗弯强度的影响。断口的SEM形貌和EDS元素分析结果表明，试样存在两种不同的断裂点：SiC颗粒断裂点和粘结相断裂点。结果表明，成型压力、粘结相含量和SiC颗粒尺寸影响SiC颗粒在断裂面上的断裂点面积，SiC颗粒断裂点面积占断裂面最小固相面积的比例是影响高温煤气过滤器支架用SiC基多孔陶瓷抗弯强度的决定性因素。
The influences of molding pressures, bonding phase contents, and SiC particle sizes on the flexural strength of SiC-based porous ceramics were investigated based on their microstructure of fracture surface. The SEM morphologies and EDS element analysis results of fracture surface showed that there were two different kinds of fracture points: SiC particle fracture points and bonding phase fracture points. It is found that molding pressures, bonding phase contents, and SiC particle sizes affect the SiC particle fracture point area in the fracture surface, and the fraction of the SiC particle fracture point area in the minimum solid area of fracture surface is a determined influence factor for the flexural strength of SiC-based porous ceramics used for hot gas filter support.