Study on Synthesis and Sintering Characterization of Ti-Si System Ceramics by Self-Propagating High Temperature Synthesis

SHS법에 의한 Ti-Si계 세라믹스의 합성 및 소결체의 특성에 관한 연구

  • 김도경 (명지대학교 무기재료공학과) ;
  • 박성 (명지대학교 무기재료공학과) ;
  • 조덕호 (요업기술원) ;
  • 조건 (한국과학기술원 무기재료공학과) ;
  • 이형복 (명지대학교 무기재료공학과)
  • Published : 1994.03.01


Intermetallic Ti-Si system ceramics were synthesized from stochiometric mixtures of titanium and silicone powders in vacuum by Self-propagating High-temperature Synthesis(SHS). In each cases of Ti5Si3, Ti5Si4 and TiSi, and TiSi2 synthesis, 20wt% product dilution, direct ignition and SHS chemical furnace method were employed. The combustion modes, which were observed during the synthesis process by using the high speed camera, of Ti5Si3, Ti5Si4, TiSi, and TiSi2 exhibit spin, osciallatory, steady-state, and spin combustion, respectively. With increasing Ti/Si molar ratio an decrease of combustion velocities was found. From the results on the measurement of the flexural strength, the specimen hot pressed at 135$0^{\circ}C$ for 30 min using synthesized Ti5Si4 powders showed the highest flexural strength at 215 MPa.



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