Affordable Access

Publisher Website

Effect of grain size on transmittance and mechanical strength of sintered alumina

Authors
Journal
Materials Science and Engineering A
0921-5093
Publisher
Elsevier
Publication Date
Volume
374
Identifiers
DOI: 10.1016/j.msea.2004.02.015
Keywords
  • α-Al2O3
  • Slip Casting
  • Grain Size
  • Translucent
  • Polycrystalline

Abstract

Abstract In this study, we investigated the effect of the average grain size on the transmittance and mechanical strength of high purity sintered alumina. When the grain size was reduced from 2 to 0.8 μm, the transmittance abruptly increased due to Rayleigh scattering. However, sintered alumina with a grain size of between 2 and 7 μm showed no transmittance. The transmittance slightly increased when the grain size was increased to more than 7 μm. The bending strength of the sintered alumina increased with decreasing grain size, which was well matched with the theoretical considerations. Polycrystalline alumina with an average grain size of 0.8 μm exhibited high transmittance and high mechanical strength.

There are no comments yet on this publication. Be the first to share your thoughts.