烧结法制备高炉渣CMAS系统微晶玻璃的研究

发布时间：2018-03-31 06:36

  本文选题：高炉渣　切入点：微晶玻璃　出处：《人工晶体学报》2017年07期

【摘要】：利用高炉渣及其它辅助原料制备基础玻璃,采用一步烧结法制备主晶相为辉石的CaO-MgO-Al_2O_3-SiO_2(CMAS)微晶玻璃。综合运用DSC,XRD以及场发射扫描电子显微镜等测试手段,分析热处理制度对高炉渣CMAS微晶玻璃的析晶行为及性能的影响。结果表明:随着热处理温度上升,微晶玻璃的主晶相均为辉石,次晶相均为长石,晶相析出量增加,微晶玻璃的体积密度及抗折强度均呈现先增后减趋势。随着热处理时间增加,微晶玻璃的体积密度及抗折强度均呈现下降趋势。当热处理温度为1020℃,晶化时间30 min时,样品的机械性能最好,体积密度为2.690 g·cm~(-3),抗折强度为67.00 MPa。
[Abstract]:The basic glass was prepared from blast furnace slag and other auxiliary materials. CaO-MgO-Al2O3-SiO2CMAS-based glass-ceramics with main crystal phase as pyroxene were prepared by one-step sintering method. The effect of heat treatment on the crystallization behavior and properties of CMAS glass-ceramics in blast furnace slag was analyzed. The results showed that the main crystal phases of glass-ceramics were pyroxene, the sub-crystalline phases were feldspar, and the amount of precipitates increased with the increase of heat treatment temperature. The bulk density and flexural strength of glass-ceramics increased first and then decreased. With the increase of heat treatment time, the bulk density and flexural strength of glass-ceramics decreased. When the heat treatment temperature was 1020 鈩，

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