Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Characteristics of Porous YAG Powders Fabricated by PVA Polymer Solution Technique

  • Lee, S.J. (Dept. of Advanced Materials Science & Engineering, Mokpo National University) ;
  • Shin, P.W. (Dept. of Advanced Materials Science & Engineering, Mokpo National University) ;
  • Kim, J.W. (Dept. of Advanced Materials Science & Engineering, Mokpo National University) ;
  • Chun, S.Y. (Dept. of Advanced Materials Science & Engineering, Mokpo National University)
  • Published : 2006.09.24
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Abstract

Pure and stable YAG $(Y_3Al_5O_{12})$ powders were synthesized by a PVA (polyvinyl alcohol) polymer solution technique. PVA was used as an organic carrier for the precursor ceramic gel. The precursor gels were crystallized to YAG at relatively a low temperature of $900\;^{\circ}C$. The synthesized powders, which have nano-sized primary particles, were soft and porous, and the porous powders were ground to sub-micron size by a simple ball milling process. The ball-milled powders were densified to 94% relative density at $1500\;^{\circ}C$ for 1h. In this study, the characteristics of the synthesized YAG powders were examined.

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