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Properties of leucite-glass composites prepared by a coprecipitation process

Published online by Cambridge University Press:  03 March 2011

Chong K. Yoon ,
Stephen T. Rasmussen ,
William J. O'Brien  and
Tseng-Ying Tien
Chong K. Yoon
Affiliation:
Department of Materials Science Engineering, School of Engineering, The University of Michigan, Ann Arbor, Michigan 48109-2136
Stephen T. Rasmussen
Affiliation:
Department of Biologic and Materials Sciences, School of Dentistry, The University of Michigan, 1011 North University, Ann Arbor, Michigan 48109-1078
William J. O'Brien*
Affiliation:
Department of Biologic and Materials Sciences, School of Dentistry, The University of Michigan, 1011 North University, Ann Arbor, Michigan 48109-1078
Tseng-Ying Tien
Affiliation:
Department of Materials Science Engineering, School of Engineering, The University of Michigan, Ann Arbor, Michigan 48109-2136
*
a)Address all correspondence to this author.
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Abstract

The purpose of this investigation was to study the effect of changes in composition and thermal history on some properties of potential leucite-glass composites made by a coprecipitation process. Four compositions from the K2O–Al2O3−SiO2 system were investigated for differences in phases, density, thermal expansion, and strength. Strength, density, and thermal expansion increased with increasing leucite content. Strengths of up to 140 MPa were obtained with air-fired specimens. Composites with different thermal expansion coefficients could be obtained by altering SiO2 content in a predictable way. Leucite-glass composites offer potential for improved dental porcelains.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 9 , September 1994 , pp. 2285 - 2289
Copyright
Copyright © Materials Research Society 1994

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