Publication
Title
A weak compatibility condition for precipitation with application to the microstructure of $PbTe-Sb_{2}Te_{3}$ thermoelectrics
Author
Abstract
 We propose a weak condition of compatibility between phases applicable to cases exhibiting full or partial coherence and Widmanstätten microstructure. The condition is applied to the study of Sb2Te3 precipitates in a PbTe matrix in a thermoelectric alloy. The weak condition of compatibility predicts elongated precipitates lying on a cone determined by a transformation stretch tensor. Comparison of this cone with the long directions of precipitates determined by a slice-and-view method of scanning electron microscopy combined with focused ion beam sectioning shows good agreement between theory and experiment. A further study of the morphology of precipitates by the Eshelby method suggests that interfacial energy also plays a role and gives an approximate value of interfacial energy per unit area of 250 dyn cm−1.
Language
English
Source (journal)
Acta materialia. - Oxford
Acta materialia. - Oxford
Publication
Oxford : 2011
ISSN
1359-6454
Volume/pages
59 :15 (2011) , p. 6124-6132
ISI
000294086900026
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address