Paper Title:
Crystallographic Distribution of Internal Interfaces in Spinel Polycrystals
  Abstract

Measurements of the grain boundary character distribution in MgAl2O4 (spinel) as a function of lattice misorientation and boundary plane orientation show that at all misorientations, grain boundaries are most frequently terminated on {111} planes. Boundaries with {111} orientations are observed 2.5 times more frequently than boundaries with {100} orientations. Furthermore, the most common boundary type is the twist boundary formed by a 60° rotation about the [111] axis. {111} planes also dominate the external form of spinel crystals found in natural settings, and this suggests that they are low energy and/or slow growing planes. The mechanisms that might lead to a high population of these planes during solid state crystal growth are discussed.

  Info
Periodical
Materials Science Forum (Volumes 467-470)
Edited by
B. Bacroix, J.H. Driver, R. Le Gall, Cl. Maurice, R. Penelle, H. Réglé and L. Tabourot
Pages
783-788
DOI
10.4028/www.scientific.net/MSF.467-470.783
Citation
H. M. Miller, D. Saylor, B. S. El Dasher, A. D. Rollett, G. S. Rohrer, "Crystallographic Distribution of Internal Interfaces in Spinel Polycrystals", Materials Science Forum, Vols. 467-470, pp. 783-788, 2004
Online since
October 2004
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$32.00
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