本文以60%转炉渣和40%硅石为原料,采用熔融法制备了微晶玻璃.借助XRD,SEM和DTA等分析手段研究了晶化和核化时间对微晶玻璃析晶行为和性能的影响.在不同的晶化和核化时间下,微晶玻璃的晶相均为钙铁辉石和铁透辉石,晶体均为球形.随着晶化时间的延长,晶体析出量增加,微晶玻璃的平均粒径和显微硬度均呈先增大后减小的趋势,当晶化时间为75 min时达到最大值,分别为0.44 μm和733 Hv;随着核化时间的延长,晶体尺寸逐渐减小,晶核数量逐渐增加,显微硬度变化平缓.
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