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J. Korean Ceram. Soc. > Volume 25(6); 1988 > Article
Journal of the Korean Ceramic Society 1988;25(6): 615.
Si3N4의 슬립물성과 Slip Cast Si3N4의 미세구조에 관한 연구
박정현, 김진숙, 박한수1
연세대학교 공과대학 요업공학과
1홍익공전 요업과
Rheological Properties of Si3N4 Suspension and Microstructure of Slip Cast Si3N4
ABSTRACT
To develope good slip and microstructure of Si3N4 the knowledge of the interaction of particles in liquid systems is required. In this work polyethyleneimines was tested as a stabilizer for Si3N4-water system. The stability of slip dispersed with polyethyleneimines was good over a wide range of pH and concentrated slips with low viscosity could be cast. This work comprises a systematic investigation including determination of electrical mobility in order to estimate the particle surface charge, determination of sedimentation rate, as well as measurements of the viscosity as a function of dispersants, pH and shear rates. The influence of deflocculation on the microstructure of slip cast Si3N4 was discussed.
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