(1. 東北大學(xué) 材料與冶金學(xué)院，沈陽 110819；
2. 東北大學(xué) 遼寧省冶金資源循環(huán)科學(xué)重點(diǎn)實(shí)驗(yàn)室，沈陽 110819)
摘 要: 研究1500 ℃下低強(qiáng)度電場對(duì)含TiC非均相含鈦冶金熔渣流變特性的影響，借助SEM-EDS檢測手段對(duì)渣樣進(jìn)行表征分析，揭示含鈦熔渣流變響應(yīng)機(jī)理。結(jié)果表明：隨電場強(qiáng)度的增加，含鈦熔渣在不同剪切速率下表觀黏度增大，表現(xiàn)出正電致流變效應(yīng)；在電場作用下，TiC固相質(zhì)點(diǎn)由分散狀態(tài)變?yōu)槌舒湢罨虼貭罘植迹}鈦礦由分散狀逐漸聚集，且晶粒隨電場強(qiáng)度增大逐漸粗化；TiC固相質(zhì)點(diǎn)的規(guī)律性變化以及高溫下形成的鈣鈦礦在電場作用下的結(jié)構(gòu)演變行為共同影響非均相含鈦熔渣的流變特性。
關(guān)鍵字: 非均相含鈦冶金熔渣；電場強(qiáng)度；黏度；電致流變
（1. School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China;
2. Liaoning Key Laboratory for Circulation Science of Metallurgy Resource,
Northeastern University, Shenyang 110819, China）
Abstract: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.
Key words: heterogeneous phase titanium-bearing metallurgical slag; electric field intensity; viscosity; electrorheological effect
