中文摘要：

以MgO为电解原料,在Na3PO3-MgF2体系中采用旋转铝液阴极法制备铝镁中间合金.采用熔盐电解监控仪和Teslameter测量电解过程中的反电动势、电流强度及磁场强度等工艺参数,并利用SEM及XRD技术分析了合金产物的微观结构,探讨了旋转铝液阴极合金化过程中反电动势、电流效率及合金中镁浓度的变化规律.结果表明,旋转铝液阴极化过程可有效降低反电动势,并提高电流效率及合金中镁的质量浓度.在950℃、电流5A、外加40 mT磁场的条件下,电解3h可制取镁含量24.5％的铝镁合金,电流效率可达83％.所得合金样品组织致密,各元素在合金中的分布较均匀,合金物相主要为Al12 Mg17.

英文摘要：

A1-Mg master alloy was prepared by Rotating Liquid Aluminium Cathode Method in Na3PO3- MgFz molten salt system with MgO as raw material. The technological parameters such as back electrodynamic potential, current intensity, and magnetic field intensity were measured by testing device of molten salt electrolysis and Teslameter. The microstructure of alloy was analyzed by SEM and XRD. The change rules of back electrodynamic potential, current efficiency and magnesium concentration in alloy during preparation were discussed. The results show that alloying of Rotating Liquid Aluminium Cathode can effectively reduce back electrodynamic potential and increase current efficiency and magnesium concentration in alloy. The A1-Mg alloy with Mg 24. 5 % can be obtained by electrolyzing for 3 h at current intensity of 5 A and 950 ℃ with current efficiency of 83%. The alloy has dense crystal structure and homogeneous distribution of elements with phase of Al12Mg17.