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STUDY THE INFLUENCE OF H3BO3 ON THE ZINC ELECTROPLATING USING ELECTROCHEMICAL NOISE TECHNIQUE J.Q.ZHANG1,C.N.Cao2,Y.L.Cheng1,Q.Y.Cai1,Z.ZHANG1,F.H.Cao1,C.S.Wu1 (1.Department of Chemistry, Zhejiang University, Hangzhou 310027, China C.N. Cao;2.State Key Laboratory for Corrosion and Protection, Institute of Metal Research, The Chinese Academy of Sdences, Shenyang 110016, China) Abstract......
concentration. Formation of surfactant micelle and mechanisms of micelle and metal ions in MEUF are ignored. Zinc ions were separated from aqueous solution via micellar-enhanced ultrafiltration by using... Adsorption characteristics of zinc ions on sodium dodecyl sulfate in process of micellar-enhanced ultrafiltration HUANG Jin-hui(黄瑾辉), ZENG Guang-ming(曾光明), QU Yun-huan(曲云欢), ZHANG Zhen(张 振......
ionic species, as shown in Fig.3. The equilibrium diagrams indicate that zinc can be dissolved in either acidic or alkaline media, whereas iron, which is the metal that predominates in the dust...J. Cent. South Univ. Technol. (2010) 17: 967-971 DOI: 10.1007/s11771-010-0585-2 Zinc leaching from electric arc furnace dust in alkaline medium LI Hong-xu(李宏煦)1, 2, WANG Yang(王洋)1, 2, CANG Da......
powder 1 Introduction Iron is presented as a common undesirable constituent of zinc concentrates. The leaching of zinc roasted calcine results in the solubilisation of desired metal together...J. Cent. South Univ. Technol. (2011) 18: 1074-1079 DOI: 10.1007/s11771-011-0806-3 Extracting indium and preparing ferric oxide for soft magnetic ferrite materials from zinc calcine reduction......
leaching residue; reduction roasting; metal separation 1 Introduction Zinc ferrite is a by-product of traditional hydro-metallurgical zinc smelting process which is insoluble in low acid conditions... of zinc from zinc ferrite residues [4]. In the most typical pyro-metallurgical processes, the Waelz process for example, coal was used as a reducer and zinc ferrite was reduced into metal zinc and iron......
be explained by the hypothesis that the absorption of PEG600 is enhanced by adding In(OH)3. When In(OH)3 is added into electrolyte, it will be immediately reduced into indium metal by zinc... is that the position of the peak is affected by the adsorption interaction, i.e., the complexation between oxygen atom in PEG600 and metal on the zinc substrate. The stronger the interaction is, the larger......
on neutral metal impurities (Mg, Zn and Ca) in zinc blende GaN were studied. Formation energies were calculated for substitution on the gallium site, the nitrogen site and incorporation in the octahedral... the metal impurities are doped in Table 2 Relaxed crystal structures of GaN and GaN∶M, lattice constant, tetrahedron angle, bond length of N-M and Ga-N of formation enthalpies zinc blende GaN; 3......
. Chemical molybdate conversion treatments for zinc [J]. Metal Finishing, 1988, 86(9): 71-74. [13] Li G Y, Niu L Y, Lian J S, Jiang Z H. A black phosphate coating for C1008 steel [J]. Surface and Coatings... Growth and corrosion resistance of molybdate modified zinc phosphate conversion coatings on hot-dip galvanized steel LIN Bi-lan(林碧兰), LU Jin-tang(卢锦堂), KONG Gang(孔 纲), LIU Jun(刘 军) School......
conditions employed, the controlling mechanism of the dissolution reaction is diffusion of metal through a boundary layer into the liquid zinc. For Ni3Al alloy, the interface between the dissolving... Isothermal corrosion (γ′+γ) Ni3Al alloy in liquid zinc WANG Wen-jun(王文俊), LIN Jun-pin(林均品), WANG Yan-li(王艳丽), CHEN Guo-liang(陈国良) State Key Laboratory for Advanced Metals and Materials......
treatment was investigated. The main composition of the sediment includes 6% zinc and other metal elements such as Ca, Fe, Cu, Mg. The effects of sulfuric acid concentration, temperature, leaching time... Leaching and recycling of zinc from liquid waste sediments PENG Bing(彭 兵), GAO Hui-mei(高慧妹), CHAI Li-yuan(柴立元), SHU Yu-de(舒余德) School of Metallurgical Science and Engineering, Central South......
