Paper Title:
MgAl2O4 Transparent Nano-Ceramics Prepared by Sintering under Ultrahigh Pressure
  Abstract

The first experimental work to produce transparent MgAl2O4 nano-ceramics was reported in this paper. The sintering characteristics of transparent nano-ceramics were investigated at relatively low temperature (800 ~ 1100°C) under ultrahigh pressure (2 ~ 5 GPa) using hydrostatic equipment. The morphologies and phases of ceramics were observed by means of SEM and XRD, respectively. The grain sizes of the ceramics are shown to be less than one hundred nanometers, far smaller than the sizes of common transparent ceramics. Furthermore, the higher the sintering temperature and pressure are, the greater the extent of densification is. At the same temperature, the higher the pressure is, the smaller the average grain size is. Under the same pressure, the higher the temperature is, the larger the average grain size is. The optimal sintering condition for preparing transparent nano-ceramics was also determined.

  Info
Periodical
Key Engineering Materials (Volumes 280-283)
Edited by
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages
549-552
DOI
10.4028/www.scientific.net/KEM.280-283.549
Citation
X. H. Chang, T. C. Lu, Y. Zhang, X. J. Luo, Q. Liu, C. B. Huang, J. Q. Qi, M. Y. Lei, C. X. Huang, L. B. Lin, "MgAl2O4 Transparent Nano-Ceramics Prepared by Sintering under Ultrahigh Pressure ", Key Engineering Materials, Vols. 280-283, pp. 549-552, 2005
Online since
February 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: K. Konopka
Abstract:The present paper is focused on ceramic–metal composites obtained via different technologies which leads to different microstructures in...
139
Authors: Guang Hui Li, Zhang Lian Hong, Li Xia Peng, Min Quan Wang
Abstract:XRD, SEM, bulk density and dielectric properties measurements were used to investigate the effect of TiO2 nanopowder substitution for...
228
Authors: Y. Xiong, Zheng Yi Fu, Hang Wang
Abstract:Translucent AlN ceramics were fabricated using spark plasma sintering (SPS) technique with 3wt% CaF2 as sintering additive. The samples...
545
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
Authors: Yun Xia Zhang, Jun Jie Hao, Jun Ting Qi
Building Materials
Abstract:In this paper, the effect of Nb2O5 on the microstructure and dielectric properties of BaTiO3-based ceramics...
1108