| Home | E-Submission | Sitemap | Login | Contact Us |  
top_img
J. Korean Ceram. Soc. > Volume 27(3); 1990 > Article
Journal of the Korean Ceramic Society 1990;27(3): 394.
기판재료로서의 물라이트-코디어라이트 복합재료에 관한 특성
김경용, 김윤호, 정형진, 김석수1, 김병호1
한국과학기술 연구원 세라믹스 연구부
1고려대학교 재료공학과
Studies of the Mullite-Cordierite Composites as a Substrate Material
ABSTRACT
Mullite and cordierite were prepared by the sol-gel route. Boehmite, fumed silica and Mg(NO3)2$.$6H2O were their starting materials. Mullite and cordierite powder were mixed by various weight percent. These mixed sols were ball-milled for 48hrs, dried at 100$^{circ}C$, pressed, cold isostatic pressed and sintered at 1490$^{circ}C$ for 2hrs. Mullite-cordierite composites sintered at 1490$^{circ}C$ for 2hrs had>98% of theoretical density. Bending strength of the sintered bodies were 329-249MPa, dielectric constant 7.1-6.7 at 1MHz and thermal expansion coefficient at 800$^{circ}C$ was matched with Si in the range of 30-35wt% cordierite.
Editorial Office
Meorijae Bldg., Suite # 403, 76, Bangbae-ro, Seocho-gu, Seoul 06704, Korea
TEL: +82-2-584-0185   FAX: +82-2-586-4582   E-mail: ceramic@kcers.or.kr
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © The Korean Ceramic Society. All rights reserved.                      Developed in M2PI