低电场强度下非均相含钛冶金熔渣的流变特性  

Rheological properties of heterogeneous phase titanium-bearing metallurgical slag under low electric field intensity

作　　者：姜涛[1,2] 张璐[1] 廖德明[1] 薛向欣[1,2] 

机构地区：[1]东北大学材料与冶金学院,沈阳110819 [2]东北大学辽宁省冶金资源循环科学重点实验室,沈阳110819

出　　处：《中国有色金属学报》2015年第1期227-232,共6页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(51090383;51174051)

摘　　要：研究1500℃下低强度电场对含Ti C非均相含钛冶金熔渣流变特性的影响,借助SEM-EDS检测手段对渣样进行表征分析,揭示含钛熔渣流变响应机理。结果表明:随电场强度的增加,含钛熔渣在不同剪切速率下表观黏度增大,表现出正电致流变效应;在电场作用下,Ti C固相质点由分散状态变为呈链状或簇状分布,钙钛矿由分散状逐渐聚集,且晶粒随电场强度增大逐渐粗化;Ti C固相质点的规律性变化以及高温下形成的钙钛矿在电场作用下的结构演变行为共同影响非均相含钛熔渣的流变特性。The effect of low intensity electric field on the rheological properties of heterogeneous phase titanium-bearing metallurgical slag containing TiC was studied at 1500℃, and the samples were characterized by SEM-EDS to reveal the rheological response mechanism. The results show that, with the increase of the electric field intensity, all samples show viscosity increment and positive electrorheological effect at different shear rates. The distribution of solid conductive particles TiC changes from dispersed distribution to chain or clustered distribution. The distribution of perovskite changes from dispersed distribution to aggregation, and the grains are coarsened with the changes of electric field intensity. Regular changes of TiC, as well as the structural evolution behaviors of perovskite formed at high temperature, affect the electrorheological behavior of heterogeneous phase titanium-bearing slag together.

关 键 词：非均相含钛冶金熔渣 电场强度 黏度 电致流变 

分 类 号：TF01[冶金工程—冶金物理化学]