【作者】 曹晓舟； 薛向欣； 杨合； 姜涛；

【Author】 CAO Xiaozhou;XUE Xiangxin;YANG He;JIANG Tao;School of Materials and Metallurgy, Northeastern University; Liaoning Key Laboratory of Metallurgical Resources Recycling Science; Engineering and Technology Research Center for Boron Resource Comprehensive Development and Application of Liaoning Province; Liaoning Key Laboratory for Ecological Comprehensive Utilization of Boron Resources and Materials;

【机构】 东北大学材料与冶金学院资源与环境工程研究所； 辽宁省冶金资源循环科学重点实验室； 辽宁省硼资源综合开发利用工程技术研究中心； 辽宁省高校硼资源生态化综合利用技术与硼材料重点实验室；

【摘要】 V-4Cr-4Ti因其优异的性能而作为核反应堆用候选结构材料。采用Ca Cl₂-Na Cl熔盐电脱氧法在直接将V₂O₃,Cr₂O₃和Ti O₂混合氧化物电化学还原制备V-4Cr-4Ti合金。考察了电解电压、时间等参数对电解的影响。采用XRD,SEM,EDS等对电解产物物相组成及微观形貌进行表征。结果表明,采用熔盐电脱氧法制备的产物VCr Ti的比例接近目标合金的组成92:4:4。据循环伏安曲线测试结果,四个还原峰对应着V₂O₃-Cr₂O₃-Ti O₂混合氧化物还原的主要步骤,说明VCr Ti合金的形成过程复杂,混合氧化物中Cr氧化物首先在电极还原,V,Ti随后分步被还原与Cr形成合金。更多还原

【Abstract】 V-4Cr-4Ti alloys exhibit important advantages as a candidate structural material for fusion reactor applications. V-4Cr-4Ti alloys were prepared by electro-deoxidation of mixed V₂O₃, Cr₂O₃ and Ti O₂ powders in the Ca Cl₂-Na Cl molten salts. The influence of cell voltage and electrolysis time on the electrolysis process was investigated. The phase compositions of the products and microstructure were analyzed by X-ray diffraction（XRD） and scanning electron microscopy（SEM） during the electrolysis process. The results showed that the weight ratio of V, Cr and Ti element in the product which is similar to 92:4:4. There are four reduction peaks based on the CV results, the electro-reduction process of V₂O₃-Cr₂O₃-Ti O₂ is complex, Cr₂O₃ was reduced to Cr metal firstly, V₂O₃ and Ti O₂ was reduced to the metal and formed VCr Ti alloy.更多还原