Ti_(3)SiC_(2)材料的制备与表征  

Preparation and Characterization of Ti_(3)SiC_(2) Material

作　　者：何卫 陈胜男 李辛庚 宗立君 李成栋[4] 王鹰[4] HE Wei;CHEN Shennan;LI Xingeng;ZONG Lijun;LI Chengdong;WANG Ying(Nanrui Group Co.,Ltd.(State Grid Electric Power Research Institute Co.,Ltd.),Nanjing 211106,China;Wuhan Nanrui Electric Power Engineering Technology equipment Co.,Ltd.,Wuhan 430415,China;State Grid Shandong Electric Power Company Electric Power Science Research Institute,Ji'nan 250002,China;Qingdao University of Science and Technology,Qingdao 266011,China)

机构地区：[1]南瑞集团有限公司(国网电力科学研究院有限公司),江苏南京211106 [2]武汉南瑞电力工程技术装备有限公司,湖北武汉430415 [3]国网山东省电力公司电力科学研究院,山东济南250002 [4]青岛科技大学,山东青岛266011

出　　处：《热加工工艺》2023年第2期17-20,26,共5页Hot Working Technology

基　　金：国家电网公司科技项目(SGSDDK00YJJS1800220)。

摘　　要：Ti_(3)SiC_(2)作为一种三元层状可加工金属陶瓷材料,由于其本身的优良性能,已被作为金属基复合材料的强化相而广泛应用。以Ti/Si/C/Al为原料构成,通过预扩散处理与真空无压烧结工艺制备Ti_(3)SiC_(2)材料,利用XRD、SEM等分析合成产物的物相组成和微观结构,研究了预扩散处理对Ti_(3)SiC_(2)原料粉体的影响和烧结温度对制备Ti_(3)SiC_(2)相的影响。结果表明,预扩散处理使原料粉体中各元素充分扩散,活性得以提高,促进了烧结时Ti_(3)SiC_(2)相的形成,降低Ti_(3)SiC_(2)相的形成温度。Ti_(3)SiC_(2)粉体的微观形貌分析,证实了具其层状结构的特征,其单层厚度可达50 nm。As a layered ternary machinable cermet, Ti_(3)SiC_(2)has been widely used as the strengthening phase of metal composite materials due to its many excellent performance. Using Ti/Si/C/Al as the composition of raw materials, Ti_(3)SiC_(2)material was prepared by prediffusion treatment and vacuum pressureless sintering process. XRD and SEM were applied to determine the phases and microstructure of the synthesized products. The effects of prediffusion treatment on raw material powder and the effects of sintering temperature on preparation of Ti_(3)SiC_(2)were explored. The results show that the chemical component is refined and its activity also increases by prediffusion, which encourages the formation and reduces the formation temperature of Ti_(3)SiC_(2)phase in the sintering stage. By analyzing the morphology of Ti_(3)SiC_(2)powder, the layered structure, in which, the thickness of the single layer is only about 50 nm, can be found.

关 键 词：层状陶瓷材料 Ti_(3)SiC_(2) 预扩散处理 真空无压烧结工艺 

分 类 号：TG146[一般工业技术—材料科学与工程]