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Sintering Characteristics of Zircon Nanopowders Fabricated by High Energy Milling Process

고 에너지 밀링 공정으로 제조된 지르콘 나노분말의 소결특성에 관한 연구

  • Received : 2015.12.31
  • Accepted : 2016.01.15
  • Published : 2016.02.27

Abstract

In this study, 5 um sized $ZrSiO_4$ was ground to 1.9 um, 0.3 um, and 0.1 um sized powders by wet high energy milling process, and the sintering characteristics were observed. Pure $ZrSiO_4$ itself can-not be sintered to these levels of theoretical density, but it was possible to sinter $ZrSiO_4$ powder of nano-scale size of, -0.1 um to the theoretical density and to lower the sintering temperature for full density. Also, the decomposition of $ZrSiO_4$ with a size in the micron range resulted in the formation of monoclinic $ZrO_2$; however, in the nano sized range, the decomposition resulted in the tetragonal phase of $ZrO_2$. So, it was possible to improve the sintering characteristics of nano-sized $ZrSiO_4$ powders.

Keywords

Zircon;$ZrSiO_4$;Zirconia;$ZrO_2$;high energy milling

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