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  • Synthesizing Si3N4 from a mixture of SiO2-CaO = Sinteza Si3N4 in mešanice SiO2-CaO
    Karakuş, Nuray ; ÖzkanToplan, Hüseyin
    In this study a-phase-rich Si3N4 powders were synthesized containing the sintering additive (CaO) using carbothermal reduction and nitridation. The starting agent for the silicon source was ... high-purity (99 %) synthetic silica. Carbon was added to the high-purity SiO2 above the stoichiometric amount of oxygen. CaCO3 (for the silicon nitride containing the mass fraction of CaO w = 10 %) was premixed in the starting reactants depending on the final powder composition and the type and amount of the secondary phases required for sintering. The synthesis was carried out in a tube furnace in different temperature ranges (1400 °C, 1450 °C and 1475 °C for 3h) under a nitrogen-gas atmosphere. Having completed the synthesis process, the powder properties were examined using standard characterization techniques (XRD, SEM,etc.).
    Vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 48, št. 2, mar.-apr. 2014, str. 171-173)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2014
    Jezik - angleški
    COBISS.SI-ID - 1046186

    Povezava(-e):

    http://mit.imt.si/Revija/
    Digitalna knjižnica Slovenije - dLib.si

vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 48, št. 2, mar.-apr. 2014, str. 171-173)

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