Glass-forming ability and ZrO2 saturation limits in the magnesium aluminosilicate system
نویسندگان
چکیده
Containerless melting was employed to evaluate the influence of increasing ZrO2 additions on glass-forming ability peraluminous melts in magnesium aluminosilicate system. The saturation limit this oxide glasses along silica-cordierite join (SiO2–Mg2Al4Si5O18) is inversely proportional SiO2 content; however, a limited solubility melt-quenched silica exists (∼2 mol%). Peraluminous samples (particularly MgO-free samples) exhibited substantially higher capability incorporating without undergoing devitrification during cooling. TEM investigations revealed phase separation all amorphous off MgO = Al2O3 line, with preferentially segregating into SiO2-depleted phase. These results identify key role for structural incorporation silicate melts, opening up alternative pathways development and glass-ceramics respectively based homogeneous distribution or, turn, its exploitation induce crystal nucleation.
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ژورنال
عنوان ژورنال: Ceramics International
سال: 2022
ISSN: ['0272-8842', '1873-3956']
DOI: https://doi.org/10.1016/j.ceramint.2021.12.051