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Accession number:  20115014602316

Title:  Effect of Li2O on viscosity and thermal expansion of silicate glass

Authors:  Yang, Kun1 ; Zheng, Weihong1 ; Cheng, Jinshu1  

Author affiliation:  1  Key Laboratory for Silicate Materials Science and Engineering, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China


Corresponding author:  Yang, K. (34762900@163.com)  

Source title:  Advanced Materials Research

Abbreviated source title:  Adv. Mater. Res.

Volume:  403-408

Monograph title:  MEMS, NANO and Smart Systems

Issue date:  2012

Publication year:  2012

Pages:  70-74

Language:  English

ISSN:  10226680

ISBN-13:  9783037853122

Document type:  Conference article (CA)

Conference name:  2011 7th International Conference on MEMS, NANO and Smart Systems, ICMENS 2011

Conference date:  November 4, 2011 - November 6, 2011

Conference location:  Kuala Lumpur, Malaysia

Conference code:  87709

Sponsor:  Int. Assoc. Comput. Sci. Inf. Technol.; Singapore Institute of Electronics

Publisher:  Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany

Abstract:  Viscosity, coefficient of thermal expansion, glass transition temperature and dilatometric softening temperature of soda-lime-silicate glass doped with Li2O were investigated by the rotating crucible viscometer and dilatometry, the melting temperature and activation energy for viscous flow of the studied melt were derived on the basis of Arrhenius Equation, in order to reveal the effects of Li2O on the properties of soda-lime-silicate glass. The results showed that the viscosity of soda-lime-silicate glass was effectively decreased and the melting temperature decreased from 1457¡ãC to 1420¡ãC with the increase of Li2O from 0 to 1.0wt%, furthermore, the Tg and Ts reduced 30∼40¡ãC. The ¦¤T responded to the range of viscosity of glass formation (¦Ç=10 3-107Pa&bulls) increased from 309.84¡ãC to 313.45¡ãC, and the activation energy for viscous flow decreased form 178.47 kJ&bullmol-1 to 168.34 kJ&bullmol-1. The CTE ¦Á (25∼400¡ãC) of specimen doped with 0.4% Li2O was 92.048¡Á10-6¡ãC-1 and the lowest of the samples. © (2012) Trans Tech Publications, Switzerland.

Number of references:  13

Main heading:  Thermal expansion

Controlled terms:  Activation energy  -  Expansion  -  Glass  -  Glass transition  -  Lime  -  Melting point  -  Metal melting  -  Silicates  -  Viscometers  -  Viscosity   -  Viscous flow

Uncontrolled terms:  Arrhenius equation  -  Dilatometric softening temperatures  -  Dilatometry  -  Glass formation  -  Silicate glass  -  Soda lime silicate glass

Classification code:  951 Materials Science  -  943.3 Special Purpose Instruments  -  931.3 Atomic and Molecular Physics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  815.1 Polymeric Materials  -  812.3 Glass  -  812 Ceramics, Refractories and Glass  -  631.1 Fluid Flow, General  -  531.1 Metallurgy  -  414 Masonry Materials  -  412 Concrete

DOI:  10.4028/www.scientific.net/AMR.403-408.70

Database:  Compendex

[ Last edited by imyourkobe on 2011-12-26 at 21:54 ]

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seven777

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Accession number:  20115014602316

Title:  Effect of Li2O on viscosity and thermal expansion of silicate glass

Authors:  Yang, Kun1 ; Zheng, Weihong1 ; Ch ...

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