한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제42권1호
  • /
  • Pages.33-36
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  • 2005
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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저온 소결용 PMN-PT-BT 세라믹스의 물성에 미치는 승온 속도의 영향

Influence of Heating Rate on the Properties of Low-Temperature-Sinterable PMN-PT-BT Ceramics

  • 임경란 (한국과학기술연구원 재료연구부) ;
  • 김창삼 (한국과학기술연구원 재료연구부)
  • Han, Kyoung-Ran (Division of Materials Science and Technology, Korea Institute of Science and Technology) ;
  • Kim, Chang-Sam (Division of Materials Science and Technology, Korea Institute of Science and Technology)
  • 발행 : 2005.01.01
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초록

저온 소결용 PMN-PT-BT분말을 $850^{circ}C/2h$ 소결할 때 승온 속도를 분당 5, 10, $20^{circ}C$로 변화하며 물성에 미치는 영향을 조사하였다. PbO(응점 $886^{circ}C$)의 휘발이 미미한 소결온도에서는 분당 $5^{circ}C$로 승은하여 소결한 것이 승온 속도 $10^{circ}C$나 $20^{circ}C$의 경우에 비하여 보다 균일한 미세구조를 나타내며, 소결밀도 $7.93g/cm^{3}$, 실온 유전을 15300, 유전손실 $0.92\%의 우수한 유전 특성을 나타내었다.

Effect of heating rate was studied on consolidation of the low-temperature-sinterable PMN-PT-BT powder by varying the heating rate from 5, 10, to $20^{circ}C/min$. Slow rate of $5^{circ}C/min$ showed more homogeneous microstructure than high rate of 10 or $20^{circ}C/min$ due to low PbO (m.p. $886^{circ}C$) evaporation at 850^{circ}C$. It showed sintered density of $7.93 g/cm^{3}$, room temperature dielectric constant of 15300, and dissipation factor of $0.92\%$.

키워드

참고문헌

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