晶化温度对不锈钢渣微晶玻璃析晶及性能影响  

Effect of Crystallization Temperature on Crystallization and Properties of Glass-ceramic from Stainless Steel Slag

作　　者：吴春丽[1] 杨健[1] 卜金彪 罗璐昕 潘德安[1] 刘波[1] 张深根[1] 

机构地区：[1]北京科技大学新材料与技术研究院,北京100083

出　　处：《硅酸盐通报》2015年第6期1638-1643,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金重点项目(U1360202);国家科技支撑计划项目(2012BAC02B01);国家科技支撑项目(2012BAC12B05)

摘　　要：利用不锈钢渣制备微晶玻璃实现了废弃资源的二次利用。本文以不锈钢渣、尾矿及废玻璃为原料,采用熔融法制备主晶相为镁黄长石相的微晶玻璃。利用DSC、XRD、SEM等测试分析手段研究晶化温度对微晶玻璃晶相、微观组织和性能的影响。结果表明：在800~920℃范围内,随晶化温度升高,主晶相镁黄长石XRD衍射峰强度不断升高,在850℃出现透辉石相;微晶玻璃晶粒由球形颗粒变为针叶状,最后成网络结构;在晶化温度850℃时性能达到较优,显微硬度最大值为6.55 GPa,密度最大值为3.02 g/cm3,吸水率最小值为0.09%。Preparation of glass-ceramics using stainless steel slag realizes the secondary utilization of waste resources. The glass-ceramics were prepared with stainless steel slag, tailings and waste glass by melting method, the major crystalline phase is akermanite. The effect of crystallization temperature on crystalline phases, microstructure and properties of glass-ceramics was investigated by differential scanning calorimeter （DSC）, X-ray diffraction （XRD） and scanning electron microscopy （SEM）. The results show that , in the range of 800-920 ~, the XRD diffraction peak intensity of major crystalline phase akermanite increased with crystallization temperature increase, the diopside was occurred at 850 ℃ ; its morphology changed from spherical grains to needles crystal and finally grew to network structure. The optimal properties are achieved at crystallization temperature 850 ℃, with microhardness of 6.55 GPa, bulk density of 3.02 g/cm3 and water absorption of O. 09%.

关 键 词：晶化温度 不锈钢渣 微晶玻璃 镁黄长石 

分 类 号：TQ174[化学工程—陶瓷工业]