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Calorimetric studies of refractory corundum

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Abstract

Calorimetry has been used in the investigations of calcium aluminate materials produced as a binder for aluminate-corundum composites of high refractoriness. The kinetics and of hydration process was thus characterized and the optimum compositions of initial binders and cement-corundum refractory filler blends could be selected for further tests. The acceleration of heat evolution - the shortening of so-called induction period and relatively high heat output in the presence of corundum was observed. It means the acceleration of hydration process, that is early crystallisation of hydration products and subsequent further dissolution of initial anhydrous aluminate phases. In the presence of fine grained corundum particles these phenomena should be attributed to the nucleating effect of fine corundum particles.

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Authors and Affiliations

  1. Institute of Refractory Materials, ul. Toszecka 99, 44-101, Gliwice, Poland

    J. Sawków

  2. Faculty of Material Science and Ceramics, University of Mining and Metallurgy, Mickiewicza 30, 30-059, Cracow, Poland

    Wiesława Nocuń-Wczelik

Authors
  1. J. Sawków
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  2. Wiesława Nocuń-Wczelik
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Sawków, J., Nocuń-Wczelik, W. Calorimetric studies of refractory corundum. Journal of Thermal Analysis and Calorimetry 74, 451–458 (2003). https://doi.org/10.1023/B:JTAN.0000005180.83880.1c

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  • DOI: https://doi.org/10.1023/B:JTAN.0000005180.83880.1c

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