Fabrication of Sintered Thermistor Body of Fe-Al-Si-O System by Solid Reaction Method

고상반응법에 의한 Fe-Al-Si-Ti-O계 써어미스터 소결체 합성

  • Gam, Kee-Sool (Temperature Laboratory, Korea Reserch Institute of Standards and Science) ;
  • Gang, Gi-Hun (Temperature Laboratory, Korea Reserch Institute of Standards and Science)
  • 감기술 (한국표준과학연구원 온도연구실) ;
  • 강기훈 (한국표준과학연구원 온도연구실)
  • Published : 1991.12.01

Abstract

Sintered thermistor body was fabricated by solid reaction method using $Fe_2O_3, \;Al_2O_3, \;TiO_2$ and Si powder. Surface matrix of sintered body was investigated by SEM and $\beta$-constant was obtained from measurement of resistance variation in liquid bath. The values of thermistor constant $\beta$ of samples in the temperature range $-50~+50^{\circ}C$ were distributed from 927 to 4005k. This thermistor body can be used as temperature sensor for radiosonde.

$Fe_2O_3,\;Al_2O_3,\;TiO_2$ 및 Si분말을 사용하여 고상반응법으로 써어미스터 소결체를 합성하였다. 합성된 소결체의 조식특성을 SEM으로 조사하고, 액체항온조에서 $-50~+50^{\circ}C$ 온도영역에서의 측정 결과 $\beta$상수가 972~4005K의 값을 갖는 써어미스터 소결체를 얻었다. 이 소결체는 고공기온측정을 위한 라디오존데용 온도센서로 사용될 수 있다.

Keywords

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