放电等离子烧结在钛铝碳表面反应合成氮化铝涂层  

Synthesis of Al N Coating on the Surface of Ti_3AlC_2 by Spark Plasma Sintering

作　　者：梁宝岩[1] 张旺玺[1] 王艳芝[1] 张艳丽[1] 

机构地区：[1]中原工学院材料与化工学院,郑州450007

出　　处：《中国陶瓷》2016年第3期14-17,共4页China Ceramics

基　　金：河南省教育厅重点项目(13A430132;151RTSTHN004);河南省教育厅自然科学研究计划项目资助(12A430024;13A430128;14A430007);河南省基础与前沿技术研究计划(132300410164);河南省省院科技合作项目(122106000051;142106000193)

摘　　要：采用高纯Ti_3AlC_2粉体为原料,使用放电等离子烧结技术,制备了Ti_3AlC_2块体材料。通过在Ti_3AlC_2粉体上放置涂覆了BN粉体的石墨片,在Ti_3AlC_2块体表面形成了致密的Al N涂层。采用X射线衍射（XRD）、场发射扫描电镜（FE-SEM）结合能谱仪（EDS）分析试样。研究结果表明,在1300℃保温15 min,压力为30 MPa,可烧结得到组织细小、致密的Ti_3AlC_2块体材料。层片状的Ti_3AlC_2晶粒长约10~20μm。样品表面的Ti_3AlC_2晶粒会发生分解,生成Ti C与Al。然后,Al与BN反应可形成致密的Al N涂层,厚度约为10μm。Ti_3AlC_2 bulk was fabricated by spark plasma sintering using high purity Ti_3AlC_2 powders as raw materials. Al N coating was formed on the surface of Ti_3AlC_2 bulk by adding graphite coated with BN powders on the Ti_3AlC_2powders. The sample was analyzed by XRD and FE-SEM combined with EDS. The result shows that dense Ti_3AlC_2composite with fine organization was produced by hot pressing at 1300 ℃ for 15 min,the pressure of 30 MPa. Ti_3AlC_2plate grains were about 10～20 μm in length. Ti_3AlC_2 grains may be decomposed to Ti C and Al. And then, Al reacted with BN to form dense Al N coating with a thickness of about 10μm.

关 键 词：TI3ALC2 ALN 反应合成 

分 类 号：TQ174.758.16[化学工程—陶瓷工业]