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Corrosion behavior of rare earth cerium based conversion coating on aluminum alloy赵丹,孙杰,张丽丽,谭勇,李季School of Environmental and Chemical Engineering,Shenyang Ligong University摘 要:coating was obtained when the compositions were as follows:CeCl3·7H2O,0.05 mol/L;H2O2,30 ml/L;current density,1.1 mA/cm2......
Corrosion behavior of rare earth cerium based conversion coating on aluminum alloy赵丹,孙杰,张丽丽,谭勇,李季School of Environmental and Chemical Engineering,Shenyang Ligong University摘 要:coating was obtained when the compositions were as follows:CeCl3·7H2O,0.05 mol/L;H2O2,30 ml/L;current density,1.1 mA/cm2......
Influence of oxidant KMnO4 on film-forming process of rare earth metal conversion coating on LY12 aluminum alloyTianzhu Gao and Jiuqing LiMaterials Science and Engineering School, University... KMnO4 on the film-forming process of rare earth metal (REM) conversion coating on LY12 aluminum alloy. It is found that the galvanic couple simulative experiment accords with the actual immersion......
Laboratory, Physical Chemistry Department, Chemistry Faculty, University of Tabriz, Tabriz, Iran) Abstract:A cerium-based chemical conversion process was studied. First, zinc coating obtained from a free...). The results of these measurements showed that the newly developed cerium-based conversion coating process was a promising candidate for replacing the conventional chromate treatments used at present......
, WU Shu-sen, LUO Ji-rong, FUKUDA Y, NAKAE H. A chromium-free conversion coating of magnesium alloy by a phosphate-permanganate solution [J]. Surface and Coatings Technology, 2006, 200(18/19... alloy plating and electroplating and electroless plating on magnesium alloys prepared by chemical conversion coating were presented in detail. Especially, the research development of magnesium alloy......
effective corrosion protection, but environmental regulations are increasingly restricting their use. Several promising chromate-free conversion coatings, including phosphate- permanganate[7...]. Electrochimica Acta, 2006, 51(14): 2862-2871. [7] ZHOU Wan-qiu, SHAN Da-yong, HAN En-hou, KE Wei. Structure and formation mechanism of phosphate conversion coating on die-cast AZ91D magnesium alloy [J......
. Key words: magnesium alloy; chemical conversion coating; phosphate; stannate; rare earth; corrosion ...?171. GAO Jin, TU Yun-hua, LI Jiu-qing. Degradation of paints on magnesium alloys and influence of chromate conversion coating[J]. Corros Sci & Protect Technol, 2005, 17(3): 169?171. [9......
): 214-223. [17] 赵 明. 镁合金表面无铬化学转化处理新技术研究[D]. 武汉: 华中科技大学, 2006: 103-105. ZHAO Ming. A study on new technology of chromium-free chemical conversion surface treatment for magnesium alloy[D]. Wuhan: Huazhong... 174.4 文献标志码:A Corrosion behavior and corrosion mechanism of cerium conversion coating on magnesium alloy in NaCl solution LEI Li1, 2, WANG Xin1, XU Hai-gang1 (1. Institute......
]. Applied Surface Science, 2008, 255(5): 1672-1680. [24] ZHAO Ming, WU Shu-sen, LUO Ji-rong, FUKUDA Y, NAKAE H. A chromium-free conversion coating of magnesium alloy by a phosphate–permanganate...; (1) 图2 植酸转化膜和钯离子偶联示意图[49] Fig. 2 Combination of phytic acid conversion coating and palladium ion[49] 图3 植酸转化膜的形成示意图[51] Fig.3 Formation of PA......
. Key words: magnesium alloys; phosphate conversion coating; formation mechanism; electrochemical process 磷化是化学转化膜处理技术中应用最为广泛的一种防护方法,成本低,操作简单,耐蚀效果明显,而且具有自愈性能,目前已成为镁合金表面主要的防护手段之一[1-4].由于镁的化学性质活泼,腐蚀电位较低... SHAN Da-yong, HAN En-hou, LIU Chang-sheng. Effect of Ca2+ on phosphate conversion coating on magnesium alloy[J]. The Chinese Journal of Nonferrous Metals, 2008, 18(10): 1825-1830. [8] 周谟银. 游离F-和氧化剂对铝镁......
