【作者】 曾涛； 薛济来； 朱骏； 郝飞飞；

【Author】 Zeng Tao Xue Jilai Zhu Jun Hao Feifei (Department of Nonferrous Metallurgy,School of Metallurgical and Ecological Engineering, University of Science and Technology of Beijing,Beijing100083)

【机构】 北京科技大学冶金与生态工程学院有色金属冶金系；

【摘要】 以NiO和Fe₂O₃粉为原料,添加氧化物Co₃O₄,用粉末冶金法制备了铝电解用镍铁尖晶石型惰性阳极材料,研究了Co₃O₄对其微观形貌、密度和高温导电性的影响。结果表明,Co₃O₄对基体材料有明显助烧结作用,能够提高阳极材料密度和改善阳极高温导电性。XRD和扫描电镜显微研究表明添加的Co₃O₄有效作用和最佳添加量受其在显微组织区域的容量制约。更多还原

【Abstract】 Inert anode materials for use in aluminum electrolysis were made of NiO and Fe₂O₃ with Co₃O₄ addition by sintering process.The effects of varying amount of Co₃O₄ additive on the microstructure,density and electrical conductivity of the materials were investigated in laboratory.The results show that the Co₃O₄ addition can accelerate the sintering process of the inert anodes,and increase the density and the electrical conductivity at elevated temperatures.XRD and SEM studies indicate the effective functions of the Co₃O₄ additive is limited by its content within the allowed area of the local microstructure of the anode materials.更多还原