Influence of chemical composition on the physical properties of basaltic glasses
The sensitivity of physical properties of a basaltic glass to compositional variations is explored and demonstrated by means of mechanical, rheological and thermo-analytical methods. Addition of MgO increases the melt fragility, the glass hardness, Young's modulus and the glass transition temperature (T g), whereas addition of Na2O decreases glass hardness, Young's modulus and T g. Addition of Al2O3 decreases melt fragility, T g and Young's modulus. The origin of the observed changes of the physical properties has been clarified in terms of the random network theory.
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Document Type: Research Article
Publication date: June 1, 2009