Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Dispersion Characteristics of AlN-Y2O3 Powder Mixture by Various Dispersants in Non-aqueous Solvents

다양한 분산제에 의한 AlN-Y2O3 혼합분말의 비수계 용매 중 분산특성

  • Kim, Shin (Departmernt of Materials Engineering, Gangneung-Wonju National University) ;
  • Bang, Sang-Woo (Departmernt of Materials Engineering, Gangneung-Wonju National University) ;
  • Hwang, Injoon (Departmernt of Materials Engineering, Gangneung-Wonju National University) ;
  • Yoon, Sang-Ok (Departmernt of Materials Engineering, Gangneung-Wonju National University) ;
  • Shin, Hyunho (Departmernt of Materials Engineering, Gangneung-Wonju National University)
  • 김신 (강릉원주대학교 재료공학과) ;
  • 방상우 (강릉원주대학교 재료공학과) ;
  • 황인준 (강릉원주대학교 재료공학과) ;
  • 윤상옥 (강릉원주대학교 재료공학과) ;
  • 신현호 (강릉원주대학교 재료공학과)
  • Received : 2014.03.30
  • Accepted : 2014.06.02
  • Published : 2014.07.31
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Abstract

The dispersion characteristics of AlN-4.5 wt% $Y_2O_3$ powder mixture by various dispersants were investigated in ethanol and methyethly-ketone (MEK) solvents. In general, the cationic polymer dispersants demonstrated superior dispersion of the powder as compared to the non-ionic ester-type dispersants or anionic phosphate-ester-based ones. The dispersion performance of the cationic polymer dispersants was sensitive to the type of solvent. An anhydric maleic-acid-based graft copolymer dispersant, AFB-1521, demonstrated a very good dispersion capability in ethanol but exhibited a much inferior dispersion in MEK. On the other hand, the dispersion of the powder mixture was very good with a phosphate-ester-based block polymer dispersant, BYK-111, in MEK solvent, while dispersionwas much degraded in ethanol.

Keywords

References

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