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Preparation of ultrafine Ti(C, N)-based cermet using oxygen-rich powders

  • Feng Ping Email author
  • He Yue-hui 
  • Xiong Wei-hao 
  • Xiao Yi-feng 
Materials Science and Engineering
  • 63 Downloads

Abstract

The availability using oxygen-rich powders to prepare ultrafine Ti(C,N)-based cermets was investigated. The deoxidation process, denitrification phenomenon and the effect of deoxidation on microstructure and mechanical properties of sintered samples were discussed, respectively. The results show that oxygen in the samples prepared even with high oxygen contained in starting powders can be almost completely cleaned away through suitable sintering process. The ultrafine oxygen-rich powders have a significant effect on microstructure, which promotes the formation of white core phase. A ultrafine Ti(C,N)-based cermet with mean particle size of 0.30 µm, uniform microstructure and excellent mechanical properties is successfully prepared. It is also found that there exists severe denitrification phenomenon in the preparation process of ultrafine Ti(C,N)-based cermet.

Key words

Ti(C,N)-based cermet ultrafine structured grain solid-state sintering deoxidation microstructure mechanical property 

CLC number

TG148 

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Copyright information

© Central South University 2005

Authors and Affiliations

  • Feng Ping 
    • 1
    • 2
    Email author
  • He Yue-hui 
    • 1
  • Xiong Wei-hao 
    • 2
  • Xiao Yi-feng 
    • 1
  1. 1.State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaChina
  2. 2.State Key Laboratory of Die & Mould TechnologyHuazhong University of Science and TechnologyWuhanChina

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