Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The Electrical and CO Gas Sensing Characteristics of ZnO-ZrO$_2$Composite Ceramics

ZnO-ZrO$_2$복합체의 전기적 성질과 일산화탄소 가스 감응특성

  • 김태원 (원광대학교 공길 전자재료공학과) ;
  • 정승우 (원광대학교 공길 전자재료공학과) ;
  • 최우성 (원광대학교 공길 전자재료공학과)
  • Published : 1997.11.01
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Abstract

We investigated a electrical and CO gas sensing properties of pure ZnO and ZnO-ZrO$_2$ composite ceramics. We made 0∼20mo1% ZrO$_2$added ZnO composite ceramics and observed a microstructure of the broken side of the samples. The properties of the samples were studied with temperature, composition, arid a concentration of carbon monoxid. The measured 1000ppm CO sensitivities of pure ZnO were about 1∼1.42, and that of ZnO-ZrO$_2$were about 1∼10.6. In order words, the 1000ppm CO sensitivities of ZnO-ZrO$_2$composite ceramics were about 1∼2 times larger than that of pure ZnO with temperature. The measured 250ppm, 500ppm CO sensitivities of ZnO-ZrO$_2$composite ceramics were about ∼3.28. ∼5.04, respectively.

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