Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Microwave Sintering Behavior and Electrical Properties of BaTiO$_3$ Ceramics

BaTiO$_3$ 세라믹의 마이크로파 소성 및 전기적 특성

  • Bai, Kang (Energy Materials Labolatory, Korea Institute of Energy Research) ;
  • Kim, Ho-Gi (Department of Materials Science and Engineering, KAIST)
  • 배강 (한국에너지기술연구소 에너지재료연구팀) ;
  • 김호기 (한국과학기술원 재료공학과)
  • Published : 1998.11.01
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Abstract

The microwave sintered BaTiO3 samples were obtained by using the microwave sintering device which can precisely control the sintering temperature and the sinter time by using IR optical thermometer and PID temperature controller. During microwave sintering the internal temperature of samples were mesur-ed by the optical fiber thermometer to compare the sintering behaviors between microwave- and con-ventionally sintered ones. The former showed the faster rate of grain growth with sintering time and the larger grain size than the latter. Also they showed the similar pattern of dielectric properties with tem-perature changes from 2$0^{\circ}C$ to 16$0^{\circ}C$.

적외선 광온도계(IR optical thermometer)와 PID 온도조절기에 의해 소성온도와 시간을 정밀하게 조절할 수 있는 마이크로파 소성장치를 사용하여 BaTiO3 시편을 소성하였다. 또한 마이크로파 소성중에 광섬유 온도계(optical fiber thermoneter)로 시편의 내부온도를 측정하여 같은 조건에서의 일반소성에 의한 시편과 소성특성을 비교한 결과, 소성시간에 따른 빠른 입성장속도과 큰 결정립경을 가졌으며, 온도에 따른 유전성질의 변화는 20~16$0^{\circ}C$의 측정범위에서 같은 경향을 보였다.

Keywords

References

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