Ti诱导无压浸渗法制备Fe-Si基SiC陶瓷复合材料  

Preparation of Si C Ceramics/Fe-Si Alloy Composites by Ti-Activated Pressureless Infiltration

作　　者：梁朝[1] 刘海云[1,2] 郭俊杰[1,2] 孟庆森[1,2] LIANG Chao;LIU Haiyun;GUO Junjie;MENG Qingsen(School of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024 [2]太原理工大学新材料界面科学与工程教育部重点实验室,山西太原030024

出　　处：《热加工工艺》2018年第24期98-101,共4页Hot Working Technology

摘　　要：通过掺杂活性元素Ti颗粒,采用无压浸渗法制备了Si C/Fe-Si复合材料。采用XRD、SEM以及EDS等技术手段,分析复合材料的相组成及显微结构。结果表明:Fe-Si合金能够自发浸渗Si C陶瓷预制体,Ti元素在金属熔体与陶瓷颗粒之间形成活性层,促进熔融金属润湿陶瓷,诱发界面反应的发生,形成自发浸渗。在自发浸渗过程中界面反应和元素相互扩散,导致复合材料的相组成和显微结构发生变化。Si C/Fe-Si composites were prepared by doping active element Ti particles by pressureless infiltration method.The phase composition and microstructure of the composites were analyzed by means of XRD, SEM and EDS. The results show that, the Fe-Si alloy can spontaneously infiltrate Si C ceramic preform. The active layer between metal melt and ceramic particles is formed by Ti element addition, which promotes the wetting of molten metal to ceramics, induces the occurrence of interface reaction and forms spontaneous infiltration. In the process of spontaneous infiltration, the phase composition and microstructure of the composites change due to the interfacial reaction and the mutual diffusion of elements.

关 键 词：无压浸渗 SIC陶瓷 FE-SI合金 界面反应 Ti颗粒 

分 类 号：TB333.13[一般工业技术—材料科学与工程]