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| 1 | 典型介质中7A04微弧氧化膜的摩擦电化学行为显示文摘为研究7A04铝合金微弧氧化膜在典型介质中的耐磨性与耐腐蚀性,制作了处理时间为1、1.5、2h的7A04微弧氧化膜.利用SiC作配副,在全程变向式摩擦磨损试验机上获得了对应的摩擦系数,并采用三电极体系,在3种典型的腐蚀性介质0.3mol/L的H2SO4溶液、质量分数3.5%的NaCl溶液和质量分数3.5%的NaOH溶液中,通过摩擦电化学特性曲线,研究了不同试件在相同润滑条件下对摩擦系数和电化学参数的影响.通过比较试件的X射线衍射谱及SEM形貌分析了7A04表面层磨损的原因.结果表明,微弧氧化膜的耐磨性能、减摩性能显著优于未处理的基体材料,并随处理时间的增加而增强;膜层中α-Al2O3相含量、膜层结构及其耐腐蚀性和耐磨性都与处理时间密切相关. | 翟文杰 朱宝全 刘莲芳 | 2010 | 材料科学与工艺2010，18，3： | 4 |
| 2 | Corrosion behavior of two heat treatment Al-Zn-Mg-Cu alloys in different intergranular corrosion solution显示文摘The electrochemical behavior of two kinds of artificial aged Al-Zn-Mg-Cu alloys in two intergranular corrosion (IGC) solutions were studied using electrochemical impedance spectroscopy (EIS) and open circuit potential (OCP) at steady-state. EDAX result indicates that different artificial ageing methods change the composition and content of Cu and Zn in different zones. Zn/Cu depleted precipitation-free zone that plays a very important role in IGC is formed by heating the solubilized Al alloy for 135 ℃ at 16 h. All impedance spectra of the two alloys in two IGC solutions can be divided into three types. The two different states Al alloys takes on one time constant and two capacitive arcs at high-mediate frequency and low frequency in the NaCl+(NH4)2SO4 solution respectively; but in the NaCl+HCl solution, impedance displays one capacitive arc at the high-mediate frequency and an inductive loop at low frequency. OCP results show that more micro-galvanic cells in the NaCl+(NH4)2SO4 solution than that in the NaCl+HCl solution results in more potential fluctuation amplitude, and long-term drift of OCP is due to the long-term variation of the cathodic and anodic corrosion processes. | 曹发和 张昭 李劲风 程英亮 张鉴清 曹楚南 | 2004 | 中国有色金属学会会刊:英文版2004，14，3： | 3 |
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