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Evaluation of true interlamellar spacing from microstructural observations

Published online by Cambridge University Press:  31 January 2011

Teruyuki Ikeda ,
Vilupanur A. Ravi  and
G. Jeffrey Snyder
Teruyuki Ikeda
Affiliation:
Materials Science, California Institute of Technology, Pasadena, California 91125
Vilupanur A. Ravi
Affiliation:
Department of Chemical and Materials Engineering, California State Polytechnic University, Pomona, California 91768
G. Jeffrey Snyder*
Affiliation:
Materials Science, California Institute of Technology, Pasadena, California 91125
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A method for evaluating true interlamellar spacing from micrographs is proposed for a multidomained lamellar structure. The microstructure of these materials is assumed to be composed of many domains with the lamellae aligned roughly parallel to each other within each domain and with the domains themselves randomly oriented relative to one another. An explicit expression for the distribution of apparent interlamellar spacing is derived assuming that the distribution of the true interlamellar spacing is Gaussian. The average interlamellar spacing is close to the peak interlamellar spacing observed in the distribution. The theoretical distributions are compared with experimental ones obtained by analyzing micrographs of PbTe–Sb2Te3 lamellar composites.

Keywords

Microstructure
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 9 , September 2008 , pp. 2538 - 2544
Copyright
Copyright © Materials Research Society 2008

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References

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