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Prediction of Glass Hardness Using Temperature-Dependent Constraint Theory

Morten M. Smedskjaer, John C. Mauro, and Yuanzheng Yue
Phys. Rev. Lett. 105, 115503 – Published 8 September 2010
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Abstract

Understanding the composition dependence of glass hardness is of critical importance for both advanced glass applications and for revealing underlying fracture mechanisms. We present a topological approach for quantitative prediction of hardness in multicomponent glassy systems. We show that hardness is governed by the number of network constraints at room temperature and that a critical number of constraints is required for a material to display mechanical resistance. Applied to a series of soda lime borate glasses, the predicted values of hardness are in excellent agreement with experimental measurements. Our approach is generally applicable to any network glass and demonstrates the importance of accounting for the temperature dependence of the network constraints.

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  • Received 12 July 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.115503

© 2010 The American Physical Society

Synopsis

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Hard to resist

Published 11 October 2010

A simple relation ties the hardness of inorganic glasses to the number of ways its structure is constrained from yielding to pressure.

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Authors & Affiliations

Morten M. Smedskjaer1, John C. Mauro2,*, and Yuanzheng Yue1,*

  • 1Section of Chemistry, Aalborg University, DK-9000 Aalborg, Denmark
  • 2Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA

  • *Corresponding authors. mauroj@corning.com. yy@bio.aau.dk.

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Issue

Vol. 105, Iss. 11 — 10 September 2010

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