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.
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Dates
Type | When |
---|---|
Created | 16 years, 5 months ago (March 11, 2009, 2:16 p.m.) |
Deposited | 1 year, 5 months ago (March 11, 2024, 7:11 a.m.) |
Indexed | 11 months, 1 week ago (Sept. 14, 2024, 12:28 a.m.) |
Issued | 20 years, 10 months ago (Oct. 1, 2004) |
Published | 20 years, 10 months ago (Oct. 1, 2004) |
Published Online | 20 years, 10 months ago (Oct. 1, 2004) |
@article{Miller_2004, title={Crystallographic Distribution of Internal Interfaces in Spinel Polycrystals}, volume={467–470}, ISSN={1662-9752}, url={http://dx.doi.org/10.4028/www.scientific.net/msf.467-470.783}, DOI={10.4028/www.scientific.net/msf.467-470.783}, journal={Materials Science Forum}, publisher={Trans Tech Publications, Ltd.}, author={Miller, Herbert M. and Saylor, David and El Dasher, Bassem S. and Rollett, Anthony D. and Rohrer, Gregory S.}, year={2004}, month=oct, pages={783–788} }