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salt solution was considered as an alternative to chromium chemical conversion treatment to improve the corrosion resistance of magnesium alloys. In this study, cerium conversion coatings formed on AZ31 magnesium alloy were characterized and the formation mechanism was discussed. X-ray photoelectron spectroscopy (XPS) analysis showed that cerium conversion coating consisted of cerium hydroxides......
, and Mn atoms. 3) SEM observation of the composite coating showed that the cracks of the Ce-V conversion coating was completely covered by a smooth, compact, and defect-free sol-gel film. Cross...: Application of a composite coating on AM60B magnesium alloy consisting of cerium-vanadium conversion coating and a hybrid sol-gel layer was investigated. Scanning electron microscopy and energy dispersive X......
in Organic Coatings, 2004, 50(4): 247-262. [3] CHEN Xiao-ming, LI Guang-yu, LIAN Jian-she, JIANG Qing. An organic chromium-free conversion coating on AZ91D magnesium alloy [J]. Applied Surface Science, 2008...J. Cent. South Univ. (2012) 19: 46-54 DOI: 10.1007/s11771-012-0971-z Corrosion resistance of waterborne epoxy coating pigmented by nano-sized aluminium powder on steel LIU Jian-hua(刘建华), ZHAN Zhong......
室温下铝合金表面Ce-Mn转化膜的制备及性能张军军1,李文芳1,杜军1(1.广东省广州市华南理工大学材料科学与工程学院)摘 要:以薄膜厚度和耐点滴腐蚀时间作为衡量Ce-Mn转化膜性能的指标,采用正交实验研究了室温下pH值为2.0时铝合金表面Ce-Mn转化处理液配方及成膜时间对转化膜性能的影响.分别获得两种较佳工艺,配方和成膜时间分别为:10 g/LCe(NO3)3+2 g/L KMnO4+0.06 g/L NaF,12 min;7 g/L Ce(NO3)3+1 g/L KMnO4+0.06 g/L NaF,9 ......
to the deposition of a crack free and uniform conversion coating with enhanced corrosion resistance on the steel surface. Also, the surface free energy is increased after post-treatment.关键词:...,B.Ramezanzadeh摘 要:The influence of cerium conversion coating(CeCC) modified by lanthanum in two forms of additive and post-treatment solution on the corrosion......
to the deposition of a crack free and uniform conversion coating with enhanced corrosion resistance on the steel surface. Also, the surface free energy is increased after post-treatment.关键词:...,B.Ramezanzadeh摘 要:The influence of cerium conversion coating(CeCC) modified by lanthanum in two forms of additive and post-treatment solution on the corrosion......
were tested.The infrared spectra of phytic acid solution,phytic acid conversion coatings and RE-phytic conversion coatings were compared.The results indicated that the phytic acid coating and RE-phytic acid coating have better corrosion resistance and the RE-phytic acid coating is much better.The infrared spectra indicated that the characteristic peak of phytic acid conversion coatings shift left......
coating was finished. The coating was cured on steel board with a thickness of 35 nm in order to measure its properties. 2.5 Measurement method Polymeric conversion rate (to total monomers...; the concentration of active emulsifier should be higher than 15 mmol/L and a high polymeric conversion rate of nano-latex can be obtained. 3) The zinc-rich coating is produced from P(St- BA-MAA-SPAA......
mechanism of conversion coating forming process of B95 aluminium alloy in cerium(Ⅲ) salt solution GU Bao-shan, YANG Pei-yan (National Engineering Laboratory for Advanced Coatings Technology of Metal Materials, China Iron and Steel Research Institute Group, Beijing 100081, China) Abstract: The electrochemical impedance spectroscope (EIS) was used to study the conversion coating forming process of B95......
corrosion resistance of electroless Ni-P with chromium-free conversion pre-treatments on AZ91D magnesium alloy[J]. Transactions of Nonferrous Metals Society of China, 2011, 21(4): 921-928. [14] 霍宏伟..., are formed. Key words: magnesium alloy; chemical conversion film; deposition mechanism; corrosion resistance; wastewater-free process 镁合金是目前工程应用中最轻质的金属结构材料,在汽车,航空航天等轻量化设计领域备受关注.但由于镁合金耐蚀耐磨性较差,限制了其更广泛的工程应用......
