高级检索
无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

SPS快速烧结制备纳米结构Ti5Si3-TiC复合材料

王连军; 江莞; 柏胜强; 王刚; 陈立东   

  1. 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室 上海 200050
  • 收稿日期:2003-11-23 修回日期:2004-03-31 出版日期:2004-11-20 网络出版日期:2004-11-20

Rapid Fabrication of Nano-structured Ti5Si3-TiC Composites by Spark Plasma Sintering

WANG Lian-Jun; JIANG Wan; BAI Sheng-Qiang; WANG Gang; CHEN Li-Dong   

  1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:2003-11-23 Revised:2004-03-31 Published:2004-11-20 Online:2004-11-20

PDF (PC)

1066

摘要： 采用金属钛和碳化硅为初始原料,采用放电等离子体快速烧结(SPS)技术制备了致密纳米结构的Ti5Si3-TiC复合材料.借助XRD、SEM和TEM考察了复合材料的相组成和显微结构,利用压痕法测定了其室温显微硬度和断裂韧性.结果表明:利用SPS技术可在1260℃,保温8 min条件下使金属钛和碳化硅同步完成反应、烧结、致密化,生成Ti5Si3-TiC复合材料,并且晶粒细小,其中TiC晶粒尺寸<200nm.

关键词: 纳米结构, 原位反应烧结, 复合材料

Abstract: Nano Ti5Si3-TiC composites were in situ fabricated through spark plasma sintering (SPS) technique using Ti and SiC powders
without any additive. The phase constituent of the samples was analyzed by X-ray diffraction techniques and microstructures
were observed by scanning electron microscope and transmission electron microscope. The fracture toughness at room temperature
was also measured by indentation tests. The results show that the Ti5Si3-TiC composite can be fabricated by means of the
reactive sintering method in a relatively short time (8 min) and at a lower temperature (1260℃), with a fine microstructure (TiC grain size <200nm).

Key words: nano-structured, in situ reactive sintering, composites

中图分类号: