Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Preparation of Zirconia-Coated NiO Powder and its Microstructure

$ZrO_2$를 피복한 NiO 분말의 제조 및 미세구조

  • 문지웅 (연세대학교 세라믹공학과) ;
  • 이홍림 (연세대학교 세라믹공학과) ;
  • 김구대 (한국과학기술연구원 세라믹공정연구센터) ;
  • 김재동 (연세대학교 세라믹공학과) ;
  • 이동아 (한국과학기술연구원 세라믹공정연구센터) ;
  • 이해원 (한국과학기술연구원 세라믹공정연구센터)
  • Published : 1998.07.01
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Abstract

Zirconia coated NiO powders were prepared by the thermal hydrolysis of $Zro(NO_3)_2$.$6H_2O$ in a mixed solvent of alcohol and water. Amorphous zirconium hydroxide was uniformly coated on the surface of NiO powder with the thickness of 20nm. The $ZrO_2$ coating layer was crystallized to tetragonal $ZrO_2$ with the size of 40-60nm at $900^{\circ}C$. The coated NiO powder containing 15 vol% $ZrO_2$ was found to have a similar isoelectric point to that of the $ZrO_2$ The grain growth inhibition effect of the coated powders was superior to the mechanically mixed powders.

Keywords

References

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