SiC-Si_3N_4复合材料力学性能的研究  

Study on Mechanical Properties of SiC-Si_3N_4 Composite Materials

作　　者：张宇凝[1] 阎峰云[2] 吴澜尔[3] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室 [2]兰州理工大学有色金属合金及加工教育部重点实验室,甘肃兰州730050 [3]北方民族大学材料科学与工程学院,宁夏银川750021

出　　处：《中国粉体技术》2008年第5期34-37,共4页China Powder Science and Technology

基　　金：宁夏"粉体材料与特种陶瓷"省部共建重点实验室基金资助;编号:0402

摘　　要：采用硬度和三点抗弯强度研究了用自蔓延燃烧合成SiC-Si3N4复合材料的力学性能。实验结果显示,当SiC质量分数为15%时,复合材料性能较好。同时比较了上述复合材料与同样质量分数的机械混合粉制备的SiC-Si3N4陶瓷材料的机械性能。结果显示,混合粉制备的复合材料性能优于直接合成复合材料的性能。The hardness and three points bend strength of SiC-Si3N4 composite materials with different SiC content which were made by the method of self-propagating combustion synthesis（SHS） were investigated. The results showed that the properties of SiC-Si3N4 composite materials with 15% SiC （mass fraction） were significantly superior compared with the one of others. The mechanical properties of SiC-SigN4 materials with the same SiC contents, prepared with the .mixing powder of SiC and Si3N4 were compared with the one of materials from SHS. It was also indicated that the properties of the SiC-SirN4 materials made from the mixture powder showed slight higher than those of one made from SHS powder.

关 键 词：SiC-SisN 复合材料 力学性能 硬度 抗弯强度 

分 类 号：TQ126[化学工程—无机化工] TQ127