ITEM METADATA RECORD
Title: Glass microstructure evaluations using high temperature mechanical spectroscopy measurements
Authors: Duan, Ren-Guan ×
Roebben, Gert
Van der Biest, Omer #
Issue Date: Feb-2003
Publisher: North-Holland
Series Title: Journal of non-Crystalline Solids vol:316 issue:1 pages:138-145
Abstract: This paper compares the microstructures of several glasses by measuring the Young's modulus and internal friction as a function of temperature, using the impulse excitation technique (IET). IET is based on the analysis of the resonant vibration of a solid material sample, induced by an impulse excitation. IET determines the mechanical resonant frequencies (f(x)) from which the elastic moduli can be calculated, and for each f(x) the corresponding internal friction (Q(-1)). It was found that the stiffness of quartz and borosilicate glasses increases with temperature. The stiffness of soda-lime and alumino-silicate glasses decreases with the increase of temperature. The change of stiffness of quartz and aluminosilicate glasses during heat-treatment is reversible, but that of borosilicate and soda-lime glasses is not. Explanations for the irreversibility are suggested based on the Q (1)-features of the glasses. Diffusion of network modifier ions in the glass network holes is proposed to cause a non-reversible stiffness change, whereas localised anelastic relaxation of network modifier ions leads to a reversible stiffness change. (C) 2003 Elsevier Science B.V. All rights reserved.
URI: 
ISSN: 0022-3093
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Materials Engineering - miscellaneous
Physical Metallurgy and Materials Engineering Section (-)
× corresponding author
# (joint) last author

Files in This Item:
File Status SizeFormat
pub02214.pdf Published 486KbAdobe PDFView/Open Request a copy

These files are only available to some KU Leuven Association staff members

 




All items in Lirias are protected by copyright, with all rights reserved.

© Web of science