한국재료학회지 (Korean Journal of Materials Research)

  • 제11권10호
  • /
  • Pages.895-899
  • /
  • 2001
  • /
  • 1225-0562(pISSN)
  • /
  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
권호 표지

다공성 $BaTiO_3$계 세라믹스의 흡착산소와 전기적 성질

Adsorbed Oxygen and Electrical Properties of Porous $BaTiO_3$-based Ceramics

  • 김준규 (인하대학교 소재연구소) ;
  • 조원승 (인하대학교 재료공학부) ;
  • 유연철 (인하대학교 재료공학부) ;
  • 박경순 (세종대학교 신소재공학과)
  • Kim, Jun-Gyu (Institute of Advanced Materials, Inha University) ;
  • Jo, Won-Seung (School of Materials Science and Engineering, Inha Uniwrsity) ;
  • Yu, Yeon-Cheol (School of Materials Science and Engineering, Inha Uniwrsity) ;
  • Park, Gyeong-Sun (Department of Advanced Materials Engineering, Sejong University)
  • 발행 : 2001.10.01
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초록

Electrical properties of porous $BaTiO_3-based$ ceramics were investigated from the viewpoint of adsorbed oxygen. Namely, the effects of heat-treatment temperature ($450-600^{\circ}C$) and measuring atmosphere (oxygen and nitrogen) on the PTCR characteristics of the porous $BaTiO_3-based$ ceramics were investigated. It was found that the PTCR characteristics of the porous $BaTiO_3-based$ ceramics was developed at $\geq$55$0^{\circ}C$, and the magnitude of the PTCR characteristics increased with increasing heat-treatment temperature. It was also found that the magnitude of the PTCR characteristics in the porous $BaTiO_3-based$ ceramics increased in oxygen atmosphere, whereas decreased in nitrogen atmosphere during heating and cooling.

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