Effects of ZnO, FeO and Fe_2O_3 on the spinel formation, microstructure and physicochemical properties of augite-based glass ceramics
Effects of ZnO, FeO and Fe_2O_3 on the spinel formation, microstructure and physicochemical properties of augite-based glass ceramics
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DOI：
10.1007/s12613-022-2489-1
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发表时间：
2023-04
期刊：
影响因子：
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通讯作者：
Shuai Zhang;Yanling Zhang;Shaowen Wu
中科院分区：
文献类型：
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作者：
Shuai Zhang;Yanling Zhang;Shaowen Wu
以ZnO、FeO和Fe 2 O3为添加剂合成了Augite基微晶玻璃，研究了尖晶石的形成、基质结构、晶化热力学和物化性能。结果表明，氧化物在玻璃基体中形成了大量的初始尖晶石。FeO、ZnO和Fe_2O_3影响尖晶石的形成，而FeO简化了玻璃网络。FeO和ZnO促进了母体玻璃的体结晶。添加氧化物后，普通辉石相的晶粒得到细化，普通辉石晶面的相对数量也受到影响。所有样品均显示出良好的机械性能和化学稳定性。ZnO掺杂量为2wt%的样品具有最大的弯曲强度（170.3MPa）。所有样品的铬浸出量值均低于国家标准（1.5 mg/L），证实了材料的安全性。研究表明，适量的含锌原料有利于制备Augite基微晶玻璃。
Augite-based glass ceramics were synthesised using ZnO, FeO, and Fe2O3as additives, and the spinel formation, matrix structure, crystallisation thermodynamics, and physicochemical properties were investigated. The results showed that oxides resulted in numerous preliminary spinels in the glass matrix. FeO, ZnO, and Fe2O3influenced the formation of spinel, while FeO simplified the glass network. FeO and ZnO promoted bulk crystallisation of the parent glass. After adding oxides, the grains of augite phase were refined, and the relative quantities of augite crystal planes were also influenced. All samples displayed good mechanical properties and chemical stability. The 2wt% ZnO-doping sample displayed the maximum flexural strength (170.3 MPa). Chromium leaching amount values of all the samples were less than the national standard (1.5 mg/L), confirming the safety of the materials. In conclusion, an appropriate amount of zinc-containing raw material is beneficial for the preparation of augite-based glass ceramics.