Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Application of Compression Molding to Determination of Binder System for Low Pressure Injection Molding

열간압축성형에 의한 저압사출성형 결합제 시스템의 결정

  • 김상우 (한국과학기술연구원 세라믹스연구부) ;
  • 이해원 (한국과학기술연구원 세라믹스연구부) ;
  • 송휴섭 (한국과학기술연구원 세라믹스연구부) ;
  • 김병호 (고려대학교 재료공학과)
  • Published : 1994.08.01
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Abstract

Dispersion condition of Si3N4 powder in molten wax was established by comparing relative viscosity of mixture with 20 vol% solids loading, while the evaluation of compression-molded sample was demonstrated as an effective method for developing a binder system for injection molding. The best dispersion of Si3N4 powder in molten wax was achieved when Si3N4 powder was treated with 5% stearic acid, and the critical powder volume fraction was determined to be about 0.51 from density measurement of compression-molded samples. Samples containing polar secondary binder showed markedly improved green strength, higher thermal expansion and increased wicking rate in the early stage.

Keywords

References

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