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Growth mechanism of Cu nanopowders prepared by anodic arc plasma WEI Zhi-qiang(魏智强)1, 2, XIA Tian-dong(夏天东)2, MA Jun (马 军)1, DAI Jian-feng(戴剑锋)1, FENG Wang-jun(冯旺军)1, WANG Qing (王 青)1, YAN Peng...; Abstract: Based on the thermodynamics and kinetics theory, a theoretical model was built to illuminate the formation of metal nanopowders by anodic arc......
anodizing time. Scanning electron microscopy (SEM) and field emission scanning electron microscopy (FE-SEM) were used to investigate the morphology evolution of the anodic oxide film. It is shown that above.... With continuous anodizing, porous oxides form at the microcracks. Those oxides grow and connect to each other, finally replace the microcrack morphology. The depth profile of the anodic oxide film formed......
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Nickel-free sealing technology for anodic oxidation film of aluminum alloy at room temperatureXue-Long Hao1,2,3,Dong-Hui Zhang1,2,31. National Center of Analysis and Testing for Nonferrous Metals... added into the potassium fluorozirconate solution to prepare different nickelfree sealing reagents,with which the anodic oxidation film of aluminum alloy was sealed at room temperature.The phosphor......
Trans. Nonferrous Met. Soc. China 22(2012) 1655-1660 Effects of boric acid on microstructure and corrosion resistance of boric/sulfuric acid anodic film on 7050 aluminum alloy DU Nan, WANG Shuai...), electrochemical impedance spectroscopy (EIS) and scanning Kelvin probe (SKP). The results show that boric acid does not change the structure of barrier layer of anodic film, but will significantly......
film (3.73×10-8 A/cm2). The synthesized composite film has good anti-wear and anti-corrosion properties and the growth mechanism of nanocomposite film is also discussed.Key words:Ti6Al4V alloy; anodic... by anodic oxidation procedure in C4O6H4Na2 electrolyte. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) were employed to characterize......
Trans. Nonferrous Met. Soc. China 22(2012) 2707-2712 Influence of oxidation heat on hard anodic film of aluminum alloy WEI Xiao-wei, CHEN Chao-yin Department of Materials Science and Engineering... of anodic oxidation heat on hard anodic film for 2024 aluminum alloy. Compared with the oxidation heat transferred to the electrolyte through anodic film, the heat transferred to the coolant through......
becomes decrease. With the sequential uniform growth, the oxide film with less microcracks is formed (Figure 3(d)) . Cross-sectional SEM images of anodic oxide films on Ti6Al4V alloy formed in sodium... the anodizing, Eq. (1b) becomes the rate determining step of the overall reaction, and leads to the slow growth rate of the oxide film. When anodic oxidation lasts for a long time (40–60 min), growth rate......
Correlation Between Microhardness and Microstructure of Anodic Film on 2024 Aluminum Alloy张培1,2,ZUO Yu1,赵旭辉1,TANG Yuming1,ZHANG Xiaofeng11. Beijing Key Laboratory of Electrochemical Process... of Chemistry and Material, Yulin Normal University摘 要:The correlation between the microhardness and microstructure features of anodic films on 2024 aluminum alloy......
Synergistic Corrosion Inhibition Effect of Molybdate and Phosphate Ions for Anodic Oxidation Film Formed on 2024 Aluminum Alloy王文博1,DONG Peng1,2,3,WANG Haiyun2,程杰2,刘胜利21. College of Electronic... of aluminum alloys, anodic oxidation technique was used to generate the oxide film. We investigated the influences of two inorganic corrosion inhibitors(ammonium dihydrogen phosphate and sodium......
