Browsing by Author "Karamanov, Alexander"

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    Diopside marble-like sintered glass-ceramics
    (Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft, 1994) Karamanov, Alexander; Gutsow, Ivan; Penkov, Ivan; Andreev, Julian; Bogdanov, Bogdan
    Experimental results on the synthesis of a new marble-like glass-ceramic material to be used for wall covering are given. The material is prepared by sintering and surface-induced crystallizadon of a precursor frit. In contrast to usual glass-ceramic materials similar to natural marbles and granites, where the major crystalline phase is β-wollastonite (CaO * Si0₂ ) , in the new material diopside (CaO * MgO * 2Si0₂ ) is formed. Due to the enhanced crystallization ability of the initial glasses, the duration of the heat treatment needed for the synthesis of the new materials can be considerably reduced.
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    Synthesis of wall-covering glass-ceramics from waste raw materials
    (Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft, 1994) Karamanov, Alexander; Chomakov, Ivan; Christov, Jancho; Kostov, Lyubomir
    The possibility of producing glass-ceramic wall-covering materials from waste raw materials by sintering and crystallization of the frit is demonstrated. The compositions used are given and suggestions concerning the synthesis are made depending on the type of the initial waste materials.