Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of Minor Additives on the MgO Creep

MgO의 고온 Creep에 미치는 미량 첨가물의 영향

  • Kim, Hwan (Dept. of Ceramic Eng. Seoul National University)
  • 김환 (서울대학교 요업공학과)
  • Published : 1977.03.01
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Abstract

Compression creep of polycrystalline magnesia at about 1$600^{\circ}C$ under 5-40kg/$\textrm{cm}^2$ was examined, and also the effects on it of minor additives such as B2O3, CaO and SiO2 were examined. The high temperature creep of high purity magnesia was primarily controlled by the Nabarro-Herring type lattice diffusion of Mg in magnesia. B2O3 was included in the molten state and showed on increasing B2O3 contents. Some of the CaO and SiO2 were also included in the molten state, promoted the grain boundary sliding, so that creep rate was increased with an increasing content of them.

Keywords

References

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