Structure and Properties of Compressed Borate Glasses

Morten Mattrup Smedskjær, U. Bauer, H. Behrens, S. Striepe, J. Deubener, R.E. Youngman, M. Potuzak, J.C. Mauro, Yuanzheng Yue

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Abstract

While the influence of thermal history on the structure and properties of glasses has been thoroughly studied in the past century, the influence of pressure history has received considerably less attention. In this study, we investigate the pressure-induced changes in structure and properties in a series of borate glasses. Upon isostatic compression, NMR experiments show that the fraction of tetrahedral boron increases, leading to an overall decrease of the molar volume of the network. We correlate these structural changes with changes in elastic moduli from Brillouin scattering experiments, hardness and crack formation from nanoindentation experiments, and overshoot in isobaric heat capacity from DSC experiments at ambient pressure. The influence of the initial boron speciation on the degree of changes in structure and properties will also be discussed.
Original languageEnglish
Publication date2012
Number of pages1
Publication statusPublished - 2012
Event2012 Glass & Optical Materials Devision Annual Meeting of the American Ceramic Society - Hilton St. Louis at the Ballpark, St. Louis, United States
Duration: 20 May 201224 May 2012

Conference

Conference2012 Glass & Optical Materials Devision Annual Meeting of the American Ceramic Society
LocationHilton St. Louis at the Ballpark
CountryUnited States
CitySt. Louis
Period20/05/201224/05/2012

Bibliographical note

page 42 in Meeting Guide (Abstract Book)

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    Smedskjær, M. M., Bauer, U., Behrens, H., Striepe, S., Deubener, J., Youngman, R. E., Potuzak, M., Mauro, J. C., & Yue, Y. (2012). Structure and Properties of Compressed Borate Glasses. Abstract from 2012 Glass & Optical Materials Devision Annual Meeting of the American Ceramic Society, St. Louis, United States.