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Journal of Applied Sciences
  Year: 2007 | Volume: 7 | Issue: 21 | Page No.: 3167-3176
DOI: 10.3923/jas.2007.3167.3176
 
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Estimation of Glass-Forming Ability and Glass Stability of Sb2S3-As2S3-Sb2Te3 Glasses by Thermal Properties

K. N`Dri, J. Sei , D. Houphouet-Boigny , G. Kra and J.C. Jumas

Abstract:
Glass forming ability parameters defined by Trg =T8/Tm and Kh = (-Tg)/(Tm-), glass stability parameters such as Kw = (Txh-Tg)/Tm, ΔT = Txh-Tg and Kll = Txh/(Tg+Tm) and the degree of undercooling ΔTr = (Tm-T)/Tm are analysed for glasses of the ternary system Sb2S3-As2S3-Sb2Te3 as function of the As2S3 concentration. These parameters are formulated by different combinations of the following characteristic Differential Scanning Calorimetry (DSC) temperatures: the glass transition temperature (Tg), the onset crystallization temperature (Txh), the peak crystallization temperature (Tch) and the melting temperature (Tm). Variations of the above parameters indicate that the studied glasses can vitrify easily and become increasingly stable when the concentration of As2S3 increases. Good correlations between ΔTr and Kh and between ΔTr and parameters (Kw, ΔT and Kll), are found implying a low frequency of homogeneous nucleation in the thermally stable glasses. The degree of undercooling ΔTr is an important parameter for the glass forming ability and the glass stability of Sb2S3-Sb2Te3-As2S3 glasses.
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How to cite this article:

K. N`Dri, J. Sei , D. Houphouet-Boigny , G. Kra and J.C. Jumas , 2007. Estimation of Glass-Forming Ability and Glass Stability of Sb2S3-As2S3-Sb2Te3 Glasses by Thermal Properties. Journal of Applied Sciences, 7: 3167-3176.

DOI: 10.3923/jas.2007.3167.3176

URL: https://scialert.net/abstract/?doi=jas.2007.3167.3176

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