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to the formation of a thick, compact and adherent passive film. Furthermore, pre-treatment in fluoride-containing H2SO4 solution also facilitates the formation of PbO2 on the anodic layer, and the reason could... the formation of a desirable protective layer in a short time.Key words:lead-based anode; fluoride; passive film; anodic layer; synergistic effect......
Calcination/acid-activation treatment of an anodic oxidation TiO2/Ti film catalystYAO Zhongpinga, JIANG Yanlia, b, JIANG Zhaohuaa, ZHU Hongkuia, and BAI Xuefengc a School of Chemical Engineering... of an anodic oxidation TiO2/Ti film catalyst. The surface morphology and phase composition were examined by scanning electron microscopy and X-ray diffraction. The catalytic property of the film......
by Ce-Mo provide high corrosion resistance both in acidic and basic solutions. Key words: 1070 aluminum alloy; anodic film; sealing; electrochemical impedance spectroscopy 1 Introduction Aluminum... on the mechanism[1-3]. The anodic film on aluminum commonly consists of two layers[4]: a thick porous outer layer separated from the metal by a thin non-porous layer is called the barrier layer......
and Na2SnO3, contribute to the film color. The surface morphologies of the anodic coatings obtained by different processes are shown in Fig.3. No coating forms on the magnesium surface by Process 1... Effects of electrolytes on properties of anodic coatings formed on AZ91HP magnesium alloy ZHANG Shu-fang(张淑芳)1, WANG Fang-yuan(王方圆)2, ZHANG Rong-fa(张荣发)1, LI Ming-sheng(李明升)1, ZHAO Fang(赵......
anodic film obtained in sulfuric acid, the pore wall of the porous layer prepared in this work is not continuous, which seems to be deposited by small spherical grains. This porous structure of the anodic film may result from the characteristics of the mixed electrolyte and the special anodizing oxidation process. The surface analysis displays that the anodic film is amorphous and composed of O, Al, C......
J. Cent. South Univ. (2021) 28: 351-360 DOI: https://doi.org/10.1007/s11771-021-4607-z Ultra-low temperature anodic bonding of silicon and glass based on nano-gap dielectric barrier discharge YAO... reduced under nano-gap conditions and the optimal discharge voltage was 2 kV. Then, the anodic bonding and dielectric barrier discharge activated bonding were performed in comparison experiments......
Formation Process of Porous Anodic Film in Sulfuric/Oxalic Acid Mixture Electrolyte杨培霞,安茂忠,郭洪飞摘 要:Porous anodic alumina film (PAA film) was fabricated... the surface morphology, and the j-t curves were also recorded to analyze the formation process of porous anodic film. Uniform pores of high regularity were obtained in sulfuric/oxalic acid mixture......