Fe含量对钛铁矿原位反应合成Al_2O_3-Ti(C,N)-Fe复合材料的影响  

Influence of Fe content on microstructure and properties of Al_2O_3-Ti(C,N)-Fe composite by in-situ synthesis from ilmenite

作　　者：刘胜明[1] 汤爱涛[1] 陈敏[1] 王健[1] 刘传璞[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《功能材料》2011年第4期722-725,共4页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2008AA031101)

摘　　要：利用钛铁矿通过碳热铝热原位还原反应、采用热压工艺制备了致密的Al2O3-Ti(C,N)-Fe复合材料,使钛铁矿两种主体成分Ti和Fe得到充分有效的利用。研究了Fe含量对制备过程、合成产物组织和性能的影响。结果表明,Fe含量的增加降低了碳热反应的温度;随Fe含量的增加,Fe相开始团聚,材料的组织都变得粗大;同时,随Fe含量的增加,Al2O3-Ti(C,N)-Fe复合材料的硬度稍有下降,抗弯强度明显降低。Al2O3-Ti（C,N）-Fe composite ceramic was produced by in-situ synthesis from ilmenite and hot-pressing.The influences of metal bonding phase Fe on composition,microstructure and properties of products were researched.The results show that the adding of Fe element decreased the temperature of the carbothermic reduction;with the increase of Fe content,Fe phase began to reunion,the organizations of Al2O3-Ti（C,N）-Fe composite have become thick;at the same time,with Fe content increasing,the hardness of Al2O3-Ti（C,N）-Fe composite decreased slightly,bending strength decreased significantly.

关 键 词：热压烧结 钛铁矿 Al2O3-Ti(C N)-Fe 组织性能 

分 类 号：TB333[一般工业技术—材料科学与工程]