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J. Korean Ceram. Soc. > Volume 31(1); 1994 > Article
Journal of the Korean Ceramic Society 1994;31(1): 69.
알루미나 졸-겔 코팅 공정을 이용한 질화규소의 상압소결 및 물질 특성
임경란, 임창섭
한국과학기술연구원 세라믹스연구부
Application of Sol-Gel Coating Process in Pressureless Sintering of Si3N4 and Their Properties
Si3N4 ceramics could be densified above 3.2g/㎤ with pressureless sintering at below 178$0^{circ}C$ by coating Si3N4 and Y2O3 powder with an alumina sol. Substitution a portion of Al2O3 with AlN improved densification. Additional milling of the coated powder in large improvement in bending strength greater than 800 MPa (4-point).
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