任 浩,李继东,孟凡俭,郭庆,王一雍,张明杰.熔盐电沉积制Mg-Si中间合金的研究[J].有色金属工程,2018,8(2):26-30.
熔盐电沉积制Mg-Si中间合金的研究
Process Study on Preparation of Mg-Si Master Alloy by Electro-deposition Method
投稿时间:2016-11-18  最后修改时间:2016-12-20
DOI:10.3969/j.issn.2095-1744.2018.02.006
中文关键词:  Mg-Si合金  电流效率  SiO2  反电动势
英文关键词:Mg-Si alloy  current efficiency  SiO2  back EMF
基金项目:辽宁省自然科学基金指导计划(201602394); 国家级大学生创新创业训练计划 项目(201610146018); 辽宁科技大学优秀人才培养项目(2015RC05)
                 
作者单位
任 浩 辽宁科技大学
李继东 辽宁科技大学
孟凡俭 辽宁科技大学
郭庆 辽宁科技大学
王一雍 辽宁科技大学
张明杰 东北大学
摘要点击次数: 211
全文下载次数: 
中文摘要:
      在CaCl2-CaF2为基础熔盐体系、CaO-SiO2为添加料、石墨坩埚为阳极、上浮镁液为阴极的电解槽中采用电沉积法生产Mg-Si中间合金,探究了实验温度、阴极电流强度和电解时间对制备镁硅中间合金过程中反电动势以及电流效率的影响。结果发现:反电动势值随阴极电流强度的变大呈指数升高趋向;温度从860℃升高到960℃时,反电动势由1.97V降低至1.78V;加入2wt?O-SiO2可使反电动势平均降低0.26V;加料周期是48min;电流效率、硅浓度随电流的增大先升高再降低,最佳电解时长是120min;合金中硅的分布较均匀,无明显偏析。
英文摘要:
      Mg-Si alloy were prepared by electro-deposition method with CaO-SiO2 as raw material,where graphite crucible as anode and the floating liquid magnesium was used as cathode in an electrolytic cell with the CaCl2-CaF2 mixture as elementary electrolyte system. The influences of experiment temperature, cathode current density and time on the back EMF and current efficiency were determined. It’s found that the back EMF increased with index function trend as the current density increasing. While it reduced from 1.97V to 1.78V when the temperature increased from 860℃ to 960℃. The results indicate that the back electromotive force decreases by 0.26V after adding 2wt% CaO-SiO2 and the feeding period is 48 minutes. Silicon content in alloys and current efficiency rise first and then drop with increasing of current density, and optimum electronic duration was 120min. Silicon is distributed evenly in Mg-Si alloys with no obvious segregation.
查看全文  查看/发表评论  下载PDF阅读器
关闭