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乙醇-氯化亚铜-氯化铵-盐酸复合溶剂分离-EDTA返滴定法测定铝电解质中单质铝蒲秋梅1,任凤莲1,曹福悦1(1.湖南省长沙市中南大学化学化工学院)摘 要:新型低温铝电解质体系物相组成复杂,单质铝的分离测定尤为困难.本文采用高选择性复合溶剂乙醇-氯化亚铜-氯化铵-盐酸(ECAH)直接分离后测定铝电解质中单质铝,成功解决了单质铝与其它铝的化合物分离困难的问题,有效降低了铝电解质溶样时铝的氟化物的微溶效应带来的误差,为铝电解质中单质铝的物相分析提供了可靠的研究方案.采用经典ED-TA络合返滴定法测得铝电解质样品中单质......
Effects of electrolyte components on properties of Al alloy anode MA Zheng-qing(马正青), ZUO Lie(左 列), PANG Xu(庞 旭), ZENG Su-min(曾苏民) School of Materials Science and Engineering... effective additive of Al alloy anode in 4 mol/L NaOH+3 mol/L NaAlO2 medium is 0.075 mol/L Na2SnO3+0.005 mol/L In(OH)3, integrating self-corrosion rate and electrochemical properties. Key words: aluminum......
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of alumina by a Bayer process, and a molten salt electrolyte based on cryolite (Na3AlF6). With the climate change of concern, environmental benefits for recycling of aluminum include the following items. 1... Recycling of automotive aluminum Jirang CUI, Hans J. ROVEN Department of Materials Science and Engineering, Norwegian University of Science and Technology (NTNU), Alfred Getz vei 2, NO7491......
Article ID: 1003-6326(2005)03-0666-05 Densification of Ni-NiFe2O4 cermets for aluminum electrolysis LAI Yan-qing(赖延清), SUN Xiao-gang(孙小刚), LI Jie(李 劼), DUAN Hua-nan(段华南... inert anodes in aluminum electrolysis is of great importance. Ni-NiFe2O4 cermets were studied with respect to their densification affected by ball milling time, particle size of raw powders, contents......
Na3AlF6-LiF体系下Al的水平电解精炼贾明1,田忠良1,赖延清1,刘芳洋1,李劼1,刘业翔1(1.湖南省长沙市中南大学冶金科学与工程学院)摘 要:在纯氟化物电解质体系下,以原Al为阳极,利用杂质与Al析出电位的差别,采用水平电解槽进行了Al的电解精炼提纯研究.结果表明:水平电解槽导致的电流密度分布不均没有对精炼过程造成不利影响,电解过程槽电压平稳;预电解对电解质净化效果明显,预电解后电解质中Cu,Si和P的含量分别降低到3.2×10-6,14×10-6和1.5×10-6.与三层液精炼Al相比,水平精炼阴......
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aluminum sheet by controlling electrolyte temperature (2-15 ℃) and anodizing time (0.5-6 h), using a fixed applied current density of 3 A/dm2 in diluted sulfuric acid electrolyte. A crack-free thick AAO... (electrochemical oxidation) of aluminum in an electrolytic cell in which the aluminum acts as the anode. If the anodizing is performed in an acid electrolyte such as sulfuric acid, oxalic acid or phosphoric acid......
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): 1057-1062. [15] CHENG Y L, ZHANG Z, CAO F H, LI J F, ZHANG J Q, WANG J. M, CAO C N. A study of the corrosion of aluminum alloy 2024-T3 under thin electrolyte layers [J]. Corrosion Science, 2004, 46(7... Trans. Nonferrous Met. Soc. China 22(2012) 1239-1249 In-situ investigation of atmospheric corrosion behavior of bronze under thin electrolyte layers using electrochemical technique LIAO Xiao-ning1,2......