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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

TiB2/FeMo陶瓷的显微结构与力学性能

苗明清; 傅正义; 张金咏; 龚伦军   

  1. 武汉理工大学材料复合新技术国家重点实验室, 武汉 430070
  • 收稿日期:2004-02-11 修回日期:2004-04-16 出版日期:2005-03-20 网络出版日期:2005-03-20

Microstructure and Mechanical Properties of TiB2/FeMo Cermet

MIAO Ming-Qing; FU Zheng-Yi; ZHANG Jin-Yong; GONG Lun-Jun   

  1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing; Wuhan University of Technology; Wuhan 430070; China
  • Received:2004-02-11 Revised:2004-04-16 Published:2005-03-20 Online:2005-03-20

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摘要： 以Fe-Mo为助烧剂,通过热压制备了TiB2陶瓷.研究了烧结温度、烧结时间对材 料显微结构和力学性能的影响,分析了烧结致密化过程.实验结果表明,随着热压烧结温度升 高,材料抗弯强度、洛氏硬度出现峰值,热压烧结时间延长,抗弯强度有所下降.液相烧结的 重排阶段致密化速率最快.

关键词: 金属陶瓷, 致密化, 热压烧结, 显微结构

Abstract: TiB2 cermet containing 7wt% Fe and 3wt% Mo was fabricated by hot pressing. The effects of sintering temperature, holding time on microstructure and mechanical properties were investigated, the densifacation process during sintering was analysed. The experimental results show that the bending strength and the Rockwell hardness reveal a peak value with the sintering temperature rising up; with holding time prolonged, the bending strength decreases slightly. The densification rate is the fastest in the rearrangement stage during liquid sintering.

Key words: cermet, densification, hot pressing, microstructure

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