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The glass transition temperature of iron and titanium containing phosphate based glasses

Shaharuddin, Sharifah Imihezri and Ahmed, I. and Furniss, D. and Parsons, A.J. and Rudd, C.D. (2015) The glass transition temperature of iron and titanium containing phosphate based glasses. Advanced Materials Research, 1115. pp. 178-181. ISSN 1662-8985

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Abstract

In this study various compositions in the phosphate based glass (PBG) system of (50-x)P2O5-40Ca- (5+x)Na-5TiO2 and (50-x)P2O5-40Ca-(5+x)Na-5Fe2O3, where x= 5 and 10 were investigated for glass transition temperature (Tg) via thermo mechanical analyser (TMA) and differential scanning calorimetry (DSC). The amorphous nature of the glasses was confirmed via XRD. The Tg measured via DSC was consistently higher by 19°C-29°C compared to TMA and was due to the thermal history and the heating rate of the samples. The Tg increased with increasing phosphate content in both glass systems. The Tg for Ti containing PBG was found to be in the range of 453°C-500°C whilst Tg for Fe containing PBG was in the range of 449°C-494°C. Consistently higher Tg for the Ti containing glass series compared to the Fe containing glasses may be attributed to the smaller ionic radius and therefore higher field strength of Ti4+ .

Item Type: Article (Journal)
Additional Information: 4586/48557
Uncontrolled Keywords: Phosphate based glasses, biodegradable, glass transition temperature, differential scanning calorimetry, thermo-mechanical analyser
Subjects: T Technology > TP Chemical technology > TP785 Clay industries. Ceramics. Glass. Cement industries
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User: Internatio Sharifah Imihezri Syed
Date Deposited: 25 Feb 2016 10:04
Last Modified: 18 Jul 2016 15:06
URI: http://irep.iium.edu.my/id/eprint/48557

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