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to AlF3-NaF-Al2O3 melts under the conditions of anodic polarization; (2) High anodic current density(>1.5 A·cm-2), high alumina concentration and low ratio of NaF/AlF3 in the molten salts would be the most...Corrosion of Zinc Ferrite Based Inert Anodes in AlF3-NaF-Al2O3 Melts under Conditions of Anodic Polarization于先进1,张丽鹏2,董云会31. School of Chemical Engineering, Shandong University of Technology2. School......
Formation Process of Porous Anodic Film in Sulfuric/Oxalic Acid Mixture Electrolyte杨培霞,安茂忠,郭洪飞摘 要:Porous anodic alumina film (PAA film) was fabricated... the surface morphology, and the j-t curves were also recorded to analyze the formation process of porous anodic film. Uniform pores of high regularity were obtained in sulfuric/oxalic acid mixture......
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Fig. 1 Surface ((a), (b)) and interface (c) morphologies of anodic oxidation film after LHT 激光热处理后氧化膜表面形貌如图1(a)所示,其局部放大电镜图如图1(b)所示,可见表面存在较多气孔,气孔形状不规则,尺寸在30~80 μm之间.由于氧化膜本身孔隙等缺陷存在,激光能量不能均匀作用在膜层表面,激... of anodic oxidation film before (a) and after (b) LHT 图2所示为激光热处理前后氧化膜表面XRD谱.由图2(a)可知,阳极氧化膜在衍射角38.38°和78.1°处出现2个尖锐峰,分别对应于为α-Al2O3的(104),(201);在衍射角为44.62°和64.98°处出现2个尖锐峰,与JCPDS(10-465)标准卡片对照,分别对应于γ-Al2O3的(400......
Transport of yttrium metal ions through fibers supported liquid membrane solvent extraction A.M.Rajput1,A.G.Gaikwad1 (1.CE & PD Division,National Chemical Laboratory,Pune 411008,India) Key words:fibers supported liquid membrane solvent extraction; yttrium metal ion; channel; extraction; stripping; PC-88A; rare earths; [全文内容正在添加中] ......
Electrolyte transfer separation of hollow fiber composite nanofiltration membrane LIU Jiu-qing(刘久清) School of Metallurgy Science and Engineering, Central South University, Changsha 410083...) membrane in terms of three parameters: an effective pore radius (rp), the ratio of effective thickness over porosity (λ/Ak) and an effective charge density (X). Good agreement between experimental data......
电解电压对阳极氧化铝膜微观形貌的影响王晓燕1,翟秀静1,张廷安1,符岩1,郑双2(1.辽宁省沈阳市东北大学2.沈阳航空工业学院,沈阳 110032)摘 要:以H2SO4为电解液对高纯铝箔进行阳极氧化,考察电解电压对多孔阳极氧化铝膜微观形貌的影响.结果表明,在一定范围内氧化铝膜纳米孔孔径随电解电压增加而增大,但过高的电压值将导致铝箔的快速击穿.1.0mol/L H2SO4为电解液采用20V电解电压制得的氧化铝膜最好.电解液硫酸浓度过高使得纳米孔局部连通现象增多.关键词:金属材料; 阳极氧化铝膜; H......
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多孔阳极氧化铝膜厚度影响因素王晓燕1,翟秀静1,张廷安1,符岩1,郑双2(1.辽宁省沈阳市东北大学2.沈阳航空工业学院,沈阳 110032)摘 要:以H2SO4为电解液对高纯铝箔进行阳极氧化,用涡流测厚仪分析制备工艺参数对多孔氧化铝膜厚度的影响.结果表明,在一定电解液浓度及电解电压下,氧化铝膜厚度随电解液浓度及电解电压的增加而增大,但过高的电解液浓度及电解电压均会造成氧化铝膜的快速击穿.氧化铝膜厚度随电解时间的增加而增大,但初期的增长速度较快,后期随电解时间的增加变化缓慢.在一定温度范围内氧化铝膜的厚度随温度的......
J. Cent. South Univ. (2012) 19: 897-902 DOI: 10.1007/s11771-012-1090-6 Dissolution rate determination of alumina in molten cryolite-based aluminum electrolyte KAN Hong-min(阚洪敏), ZHANG Ning(张宁), WANG... 2012 Abstract: Determination of dissolution rate of alumina is one of the classical problems in aluminum electrolysis. A novel method which can measure the dissolution rate of alumina was presented......