Paper Title:
Sintering AlN Ceramics Below 1500°C with MgO-CaO-Al2O3-SiO2 Glass Addition
  Abstract

5~15 wt% MgO-CaO-Al2O3-SiO2 (MCAS, fabricated by sol-gel method) glass is used as the sintering aid of AlN ceramics. The sintering is proceeded from 1350oC~1550oC, scanning electron microscope is used to observe the sintered morphologies and X-ray diffraction pattern are used to confirm the crystal structures. From the SEM observations, as 10wt% and 15wt% MCAS is added, AlN ceramics can be densified at 1500oC and 1450oC, which are much lower than the before studies were. From the X-ray diffraction patterns, the crystal phases of MCAS-AlN ceramics are AlN, Al2O3, and cordierite phases. In this study, the dielectric characteristics of MCAS-AlN ceramics are also developed as a function of MCAS content and sintering temperature.

  Info
Periodical
Key Engineering Materials (Volumes 336-338)
Edited by
Wei Pan and Jianghong Gong
Pages
1868-1871
DOI
10.4028/www.scientific.net/KEM.336-338.1868
Citation
C. F. Yang, C. M. Cheng, H. H. Chung, C. C. Chan, "Sintering AlN Ceramics Below 1500°C with MgO-CaO-Al2O3-SiO2 Glass Addition", Key Engineering Materials, Vols. 336-338, pp. 1868-1871, 2007
Online since
April 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Young Wook Kim, Sung Hee Lee, Toshiyuki Nishimura, Mamoru Mitomo, Je Hun Lee, Doh Yeon Kim
Abstract:The effect of glassy-phase, using AlN and Lu2O3 as sintering additives, on the microstructure and mechanical properties of...
299
Authors: Shoichi Kume, Masaki Yasuoka, Naoki Omura, Koji Watari
Abstract:The effects of sintering additives on dielectric loss tangent of AlN ceramics were explored. Different amounts of Y2O3 and TiO2 were...
845
Authors: Hai Yun Jin, Ying Li, Xiang Ya Jia, Guan Jun Qiao
Abstract:In order to obtain machinable ceramic with high hardness and strong mechanical properties, the SiC/Al/h-BN Composite Ceramics were fabricated...
363
Authors: Rosa Maria da Rocha, Francisco Cristóvão Lourenço de Melo
Abstract:The effect of three different sintering additive systems on densification of boron carbide powder was investigated. The sintering additives...
170
Authors: Xiao Lei Li, Li Ying Wang, Er An Zai, Hong An Ma, Xiao Peng Jia
Abstract:Heat treatment is an effective means of structural adjustment and performance improvement of AlN ceramics. AlN ceramics prepared at high...
68