Effects of composition and phase relations on mechanical properties and crystallization of silicate glasses

KILINC, Erhan, BELL, Anthony M. T., BINGHAM, Paul A. and HAND, Russell J. (2021). Effects of composition and phase relations on mechanical properties and crystallization of silicate glasses. Journal of the American Ceramic Society, 104 (8), 3921-3946.

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Abstract

Abstract: Crystallization, mechanical properties, and workability are all important for the commercialization and optimization of silicate glass compositions. However, the inter‐relations of these properties as a function of glass composition have received little investigation. Soda‐lime‐silica glasses with Na2O‐MgO‐CaO‐Al2O3‐SiO2 compositions relevant to commercial glass manufacture were experimentally studied and multiple liquidus temperature and viscosity models were used to complement the experimental results. Liquidus temperatures of the fabricated glasses were measured by the temperature gradient technique, and Rietveld refinements were applied to X‐Ray powder diffraction (XRD) data for devitrified glasses, enabling quantitative determination of the crystalline and amorphous fractions and the nature of the crystals. Structural properties were investigated by Raman spectroscopy. Acoustic echography, micro‐Vicker's indentation, and single‐edge‐notched bend testing methods were used to measure Young's moduli, hardness, and fracture toughness, respectively. It is shown that it is possible to design lower‐melting soda‐lime‐silica glass compositions without compromising their mechanical and crystallization properties. Unlike Young's modulus, brittleness is highly responsive to the composition in soda‐lime‐silica glasses, and notably low brittleness values can be obtained in glasses with compositions in the wollastonite primary phase field: an effect that is more pronounced in the silica primary phase field. The measured bulk crystal fractions of the glasses subjected to devitrification at the lowest possible industrial conditioning temperatures indicate that soda‐lime‐silica glass melts can be conditioned close to their liquidus temperatures within the compositional ranges of the primary phase fields of cristobalite, wollastonite, or their combinations.

Item Type:	Article
Additional Information:	** Article version: VoR ** From Wiley via Jisc Publications Router ** Licence for VoR version of this article: http://creativecommons.org/licenses/by-nc/4.0/ **Journal IDs: issn 0002-7820; issn 1551-2916 **Article IDs: publisher-id: jace17784 **History: published 08-2021; published 10-04-2021; accepted 17-02-2021; rev-recd 17-02-2021; submitted 23-12-2020
Uncontrolled Keywords:	ORIGINAL ARTICLE, ORIGINAL ARTICLES, crystallization, mechanical properties, soda‐lime‐silica glass
Identification Number:	https://doi.org/10.1111/jace.17784
Page Range:	3921-3946
SWORD Depositor:	Colin Knott
Depositing User:	Colin Knott
Date Deposited:	03 Jun 2021 15:48
Last Modified:	03 Jun 2021 15:48
URI:	https://shura.shu.ac.uk/id/eprint/28703

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