摘要
采用SiC粉和Si粉高温氮化反应烧结制备Si3N4结合SiC复合陶瓷材料。研究四种SiC原料粉体(0-1mm、74μm、44μm、和0.5μm)中三种不同粒度不同含量颗粒级配对Si3N4结合SiC复合陶瓷材料的影响。通过X射线衍射仪和扫描电子显微镜对试样的物相和显微结构进行表征,并对试样的耐压强度等力学性能进行测试。结果表明:采用三种SiC较细粉体颗级配且如下组成:74μm的含量为5 wt%,44μm的含量为10 wt%,0.5μm的含量为35 wt%,所制备的Si3N4结合SiC陶瓷材料的基本烧结性能较好,其体积密度为2.43g/cm3,耐压强度为324MPa。
Si3N4/SiC composite ceramics were prepared by high temperature nitrification sintering of SiC and Si powders. Effects of different batchings of SiC powders in 3 of the four particle sizes （0-1mm, 74μm, 44μm and 0.5μm） on Si3N,/SiC composite ceramics were studied. The as-prepared samples were characterized by XRD and SEM, and their mechanical properties were also tested. Results show： the sample made from the mixture of SiC powders in the three finest sizes of 74 μm, 44 μm and 0.5 μm to the ratio of 5 wt%, 10 wt % and 35 wt % has high sintering performance with the bulk density of 2.43g/cm3 and the compressive strength of 324MPa.
出处
《中国陶瓷工业》
CAS
2012年第6期9-13,共5页
China Ceramic Industry
基金
湖北省自然科学基金(编号:2011CDB240)
国家科技支撑计划(编号:2011BAB03B04)
关键词
粒度
颗粒级配
SI3N4结合SIC
particle size
particle size distribution
Si3N~/SiC composite material
作者简介
通信联系人：邓承继，E-mail：cjdeng@wust．edu．cn
