Influence of $TiO_2$ on Sintering and Microstructure of Magnesia

마그네시아의 소결과 미세구조에 미치는 $TiO_2$의 영향

  • 이윤복 (부산대학교 무기재료공학과) ;
  • 박홍채 (부산대학교 무기재료공학과) ;
  • 오기동 (부산대학교 무기재료공학과)
  • Published : 1994.05.01

Abstract

The influence of TiO2 addition on the sintering and microstructure of magnesia ceramics was studied. An excess amount of TiO2 over the solid solubility limit reacted with magnesia to form Mg2TiO4 compound above 130$0^{\circ}C$. The deviation of lattice parameter of MgO was estimated to be under 0.2% when existence of TiO2 in MgO. The addition of TiO2 markedly promoted the densification of MgO at comparatively low temperature and the sintered density of about 98% of the theorectical was obtained at 150$0^{\circ}C$, 2h. The densification was mainly governed by grain growth of MgO and the effect of Mg2TiO4 existing as a second phase on depression of grain growth of MgO was not exhibited.

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References

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  7. 내화재료공학 오기동(외 7인 저)