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with metallic impurities[J]. Journal of Membrane Science, 2002, 207(1): 1-16. [8] Ilkhchi M O, Yoozbashizadeh H, Safarzadeh H Y. The effect of additives on anode passivation in electrorefining of copper[J...)03-0575-06 Influence of As, Sb and Bi on electrodepositing and anode oxidation mechanism of copper XIAO Fa-xin1, 2, ZHENG Ya-jie1, JIAN Hong-sheng1, GONG Zhu-qing1, XU Wei1 (1. School......
preferentially from chalcopyrite surface during bioleaching. The copper extraction is low, resulting from the formation of a passivation layer on the surface of chalcopyrite. The major component of the passivation layer that blocked continuous copper extraction is sulfur instead of jarosite. Key words: chalcopyrite; Leptospirillum ferriphilum; surface properties; passivation layer 1 Introduction Chalcopyrite......
Passivation process of X80 pipeline steel in bicarbonate solutionsJian-long Zhou1), Xiao-gang Li1), Cui-wei Du1), Ying Pan2), Tao Li 3), and Qian Liu1) 1) School of Materials Science and Engineering... University of Science and Technology, Baotou 014010, China摘 要:The passivation process of X80 pipeline steel in bicarbonate solutions was investigated using......
with high antimony[J]. Yunnan Metallurgy, 1993(2): 15-18. [4] 贺子凯, 阳书文. 锑在焊锡电解中引起的钝化研究[J]. 有色金属, 2001, 53(2): 55-58.HE Zi-kai, YANG Shu-wen. The study of anode passivation caused by SbSn...;硫化焙烧;饱和蒸汽压 中图分类号:TF814;TF818 文献标志码:A Separation of antimony from tin anode slime by sulfidation roasting LU Hong-bo1, 2 (1. Hi-tech and New Materials Branch of Yunnan Tin......
Corrosion action and passivation mechanism of magnesium alloy in fluoride solution LI Jian-zhong(李建中)1, 2, HUANG Jiu-gui(黄久贵)2, TIAN Yan-wen(田彦文)1, LIU Chang-sheng(刘常升)1 1. School of Metallurgy... of Mg/F on the magnesium alloy surface is fixed at 11.3?1. The activated magnesium alloy gains a ‘passivation state’ in a mixture of sulfuric acid and hydrofluoric acid at a volume ratio of less than......
文献标识码:A Trivalent chromium passivation based on zincate plating ZENG Zhen-ou1, ZOU Jin-guang1, ZHAO Guo-peng2, XIAO Zheng-wei1 (1.College of Chemistry, South... and forming process of trivalent chromium passivation film were studied by electrochemical methods, scanning electron microscopy and X-ray photoelectron spectroscopy. The trivalent chromium passivation film......
higher and the donor density is slightly lower than that of the CG sample. Key words: stainless steel; Fe-Ni-Cr; polarization; acid corrosion; passivation 1 Introduction The application of stainless steel... as compared with the CG counterpart, indicating that UFG structure weakens the passivation ability of Fe-Cr-Ni alloy. Fig. 2 Potentiodynamic polarization curves for UFG Fe-Ni-Cr alloy and CG counterpart......
Trans. Nonferrous Met. Soc. China 22(2012) 2255-2260 Control method of chalcopyrite passivation in bioleaching PAN Hao-dan1, YANG Hong-ying1, TONG Lin-lin1, ZHONG Cong-bin2, ZHAO Yu-shan3 1. School..., Northeastern University, Shenyang 110819, China Received 5 April 2012; accepted 26 June 2012 Abstract: Passivation is a common phenomenon on the surface of chalcopyrite in the process of bioleaching......
anode; dendrite growth; shape change; passivation; hydrogen evolution Foundation item: Project(51702250) supported by the National Natural Science Foundation of China; Project (2018JQ2055) supported...率,其主要是由以下几方面引起:枝晶生长,形变,钝化和析氢腐蚀[13](见图2). 图2 锌阳极上可能出现的现象示意图[13] Fig. 2 Schematic diagram of performance-limiting phenomena that may occur on zinc anode[13] 枝晶的形成主要是由锌的不均匀沉积引起,而锌阳极表面不均匀的浓度分......
of nitric acid passivation was investigated to enhance the general corrosion resistance of biomedical high-nitrogen nickel-free stainless steels(HNSs).After passivation,the corrosion rate of HNS could......