Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Electrical Conductivity of MgO-doped Cr2O3

M\ulcorner를 첨가한 Cr2O3의 전기전도도

  • 박진성 (한국과학기술원 재료공학과) ;
  • 김호기 (한국과학기술원 재료공학과)
  • Published : 1987.02.01
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Abstract

The microstructure and the electrical conductivity of MgO-doped Cr2O3 were investigated as a function of oxygen partial presure, temperature, and MgO content. The grain size was estimated about 1.0$\mu\textrm{m}$. The solubility limit is increased with oxygen partial pressure. Above the solubility limit of MgO in Cr2O3, the spinel phase(MgCr2O4) is formed by the reaction of MgO and Cr2O3. The electrical conductivity of MgO-doped Cr2O3 within the solubility limit is increased with MgO content. Above the solubility limit, however, it is decreased with increasing MgO content because of the formation of the spinel phase.

Keywords

References

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