Paper Title:
Abnormal Grain Growth Mechanism of Calcium Hexaluminate Phase
  Abstract

Calcium-hexaluminate phase(CA6) phase is known to be effective for the crack shielding due to the spinel block crystal structure. In this study, we focused to control the CA6 morphology for the good damage tolerance behavior in alumina and zirconia/calcium-hexaluminate(CA6) composites. calcium-hexaluminate(CA6) composites were prepared from zirconia, alumina and calcium carbornate powders. Calcium-hexaluminate(CA6) phase was obtained by the solid reaction through the formation of intermediate phase(CA2). CA6 phase showed column type abnormal grain grown behavior composed of small blocks. Due to the typical microstructure of CA6, alumina and zirconia/calcium-hexaluminate composites provide well controlled crack propagation behavior.

  Info
Periodical
Materials Science Forum (Volumes 534-536)
Edited by
Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim
Pages
485-488
DOI
10.4028/www.scientific.net/MSF.534-536.485
Citation
J. H. Song, Y. J. Jo, H. G. Bang, S. Y. Park, "Abnormal Grain Growth Mechanism of Calcium Hexaluminate Phase ", Materials Science Forum, Vols. 534-536, pp. 485-488, 2007
Online since
January 2007
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Price
$32.00
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