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7075铝合金微弧氧化涂层的组织结构与耐蚀耐磨性能王艳秋1,王岳2,陈派明2,邵亚薇0,王福会2(1.黑龙江省哈尔滨市哈尔滨工程大学材料科学与化学工程学院腐蚀与防护实验室2.中国船舶重工集团公司 第七二五研究所)摘 要:采用微弧氧化技术在7075铝合金表面制备保护性涂层,考察工艺参数对涂层生长过程的影响规律,利用SEM和XRD测试微弧氧化涂层的微观组织,通过中性盐雾实验评价涂层的耐腐蚀性能,通过摩擦磨损实验研究涂层的摩擦磨损特性.结果表明,电流密度和氧化时间是影响微弧氧化涂层质量和厚度的重要参数;γ-Al2O3......
Trans. Nonferrous Met. Soc. China 24(2014) 2581-2587 Fabrication and photodegradation properties of TiO2 nanotubes on porous Ti by anodization Guo-jian CAO1, Bo CUI2, Wen-qi WANG2, Guang-ze TANG2, Yi...; anodization; photodegradation; porous Ti 1 Introduction TiO2 has become the focus of researches because of its highly potential applications as self-cleaning surfaces and indoor purification......
. Thermally treated nanotubes are composed of mixtures of the anatase and rutile phases. Key words: TiO2; nanotube; anodization; fluoride  ... metal oxide nanostructure has been developed based on anodization. Under specific anodic conditions in electrolytes containing fluoride, highly ordered arrays of oxide nanotubes can grow on various......
; Abstract: Anodization of rare earth-containing Mg alloy...; 1 Introduction Anodic coatings on Mg and Mg alloys are used to improve their corrosion resistance or to enhance the adhesion for organic coatings[1-2]. The possible mechanisms for Mg anodization......
to avoid the failure of the coated HA layer under shear stress[15]. The vertically aligned TiO2 nanotubes on Ti substrate can be fabricated by anodization process[16-17], which can act.... The purpose of present work is to strengthen the HA coating/Ti interface by anodization of titanium, which might provide a mechanical interlocking between the HA coating and nanotubes in titania......
is of continuous interest to researchers. CHANG et al[4] reported that heat-treatment of Al foil at 500 °C before and after anodization could induce the formation of crystalline γ′-Al2O3 in the outer layer of anodized oxide. ONO and ALWITT et al found that the hydration treatment of Al foil using hot water before anodization not only could save much electrical power for the formation of anodized oxide......
solution in the electrochemical cell at voltage of 40 V for 3 h. During anodization, electrochemical cell was put in a water bath to keep temperature at the room temperature. Then, the plates were immersed in a mixture solution of phosphoric acid (0.4 mol/L) and chromic acid (0.2 mol/L) at 60 ℃ for 3 h to remove the alumina layer formed in the first step of anodization process. The parameters......
environments whenever they are mechanically damaged. It is believed that thicker and more stable TiO2 based oxide surfaces are generally favorable for surface bioactivity[5]. Spark anodization is one... for Ti anodization in fluoride containing acid electrolytes at moderate voltages [7]. Such TiO2 structures consist of arrays of nanotubes with diameter of 100 nm and thickness up to 400-500 nm......
resistance of magnesium alloy is achieved by anodization[3-5]. Micro-arc oxidation (MAO), a relatively new surface treatment, has been widely used in recent years because MAO can remarkably enhance...], the electric parameters[8-10], the concentration and chemical composition of electrolyte[11-15] and the post treatment[16]. The electric parameters applied during the anodization process have great influence......