Preparation of TiC Reinforced Iron Based Composite Powder by Electrochemical Reduction from High Titanium Slag with Carbon
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摘要: 以高钛渣和碳粉为原料，采用电化学还原的方法制备出具有多核结构的TiC增强铁基复合粉末。利用X射线衍射（XRD）和电子显微镜等手段检测产物的相组成和微观结构，分析烧结片的电化学反应历程。结果表明：高钛渣/C烧结片的还原历程可分为两个阶段：第一阶段是高钛渣的电化学还原反应，由此导致Fe，TiO和CaTiO3的生成；第二阶段是TiO→TiCxO1-x→TiC的转化过程。高钛渣/C粉的配比影响最终产物，增加C粉的掺入量可以提高最终产物中TiC的含量。
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关键词:
- TiC增强Fe基复合粉末 /
- 高钛渣 /
- 电化学还原 /
- 碳化 /
- 反应历程
Abstract: Titanium carbide（TiC） reinforced iron（Fe） based composite powder with a multi-core structure was electrochemically prepared directly from high titanium slag and carbon powder.The electrochemical reaction pathways for the sintered piece of the slag and carbon were investigated by examination of the partially and fully reduced samples using XRD and SEM-EDS analyses.The reduction process of the sintered piece of high titanium slag and carbon can be divided into two main stages.The first stage is the electrochemical reduction of the high titanium slag,leading to the formation of Fe,titanium monoxide（TiO） and calcium titanate（CaTiO3）.The second stage is a transformation process of TiO→TiCxO1-x→TiC.The ratio of high titanium slag to carbon powder affects the final composition of the products,and the increase in carbon powder addition can increase the TiC content of the final products. -
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