한국결정성장학회지 (Journal of the Korean Crystal Growth and Crystal Technology)

  • 제25권2호
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  • Pages.80-84
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  • 2015
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  • 1225-1429(pISSN)
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  • 2234-5078(eISSN)
한국결정성장학회 (The Korea Association of Crystal Growth)
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Mn-Co-Ni계 NTC 서미스터 제조 및 특성

Preparation and characterization of Mn-Co-Ni NTC thermistor

  • 이정일 (한국교통대학교 신소재공학과) ;
  • 김태완 (한국교통대학교 신소재공학과) ;
  • 신지영 (한국교통대학교 신소재공학과) ;
  • 류정호 (한국교통대학교 신소재공학과)
  • Lee, Jung-Il (Department of Materials Science and Engineering, Korea National University of Transportation) ;
  • Kim, Tae Wan (Department of Materials Science and Engineering, Korea National University of Transportation) ;
  • Shin, Ji Young (Department of Materials Science and Engineering, Korea National University of Transportation) ;
  • Ryu, Jeong Ho (Department of Materials Science and Engineering, Korea National University of Transportation)
  • 투고 : 2015.03.31
  • 심사 : 2015.04.10
  • 발행 : 2015.04.30
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초록

상온용 NTC 서미스터로는 주로 Mn-Co-Ni 산화물계가 주료 사용된다. 본 연구에서는 Mn-Co-Ni 산화물계 분말을 이용하여 상온에서 가압 성형하여 $900{\sim}1300^{\circ}C$ 온도범위에서 3시간 동안 소결하여 서미스터 소자를 제작하였다. 소결온도에 따른 서미스터 세라믹 샘플의 상변화, 소결밀도, 미세구조 및 원소함량비 변화를 고찰하였다. $1250^{\circ}C$에서 소결된 Mn-Co-Ni 서미스터 소자에 대하여 온도에 대한 저항특성을 측정하였으며, 측정되는 절대온도의 역수와 저항의 로그함수값에 대한 변화를 고찰하였다.

Mn-Co-Ni oxide system has been used as the NTC thermistors for normal temperature applications. Mn-Co-Ni oxide-based thermistors were sintered at different temperatures for a constant processing time from 900 to $1300^{\circ}C$ for 3 h. The crystal structure, bulk density, microstructure and chemical composition were characterized by XRD, FE-SEM and WD-XRF. The plot of the resistance versus measuring temperature was characterized for the sintered sample at the $1250^{\circ}C$. Moreover, the relationship between log resistivity and reciprocal of absolute temperature of the NTC thermistor was investigated.

키워드

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피인용 문헌

  1. Crystal structure of Mn-Co-Ni thermistor vol.25, pp.5, 2015, https://doi.org/10.6111/JKCGCT.2015.25.5.225