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氧化电压对TiO_2薄膜阴极保护效应的影响 沈嘉年1,刘冬1,万斌2 (1.上海大学材料研究所,上海,200072;2.上海工程技术大学材料工程学院,上海,201620) 摘要:为弄清TiO_2薄膜对金属的保护作用,在1 mol/L的H_2SO_4溶液中,室温下,分别采用100,130,150 V直流电压对纯钛片阳极氧化制备TiO_2薄膜,采用扫描电镜(SEM)和X射线衍射仪对TiO_2薄膜的组织形貌和晶型进行了分析,测量了TiO_2薄膜在模拟海水中紫外光照的时间-电极电位,极化曲线,交流阻抗谱和与45号钢的耦合电流.结果表明:氧化电压为150 V时,所制备的TiO_2薄膜对45号钢在模拟海水中的腐蚀具有较好的光阴极保护作用. 关键词:阳极氧化; TiO_2薄膜; 阴极保护; anodic oxidation; TiO_2 film; cathodic protection......
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钛合金阳极氧化膜的XPS研究 朱胜利1,杜志惠2,杨贤金1,崔振铎1 (1.天津大学材料科学与工程学院,天津,300072;2.航天材料及工艺研究所,北京,100076) 摘要:利用XPS分析了TCA钛合金经阳极氧化处理后,表面氧化膜的成分和结构及其随深度的变化.研究表明,钛合金阳极氧化膜表面为单一的TiO_2,并以晶态和非晶态的形式存在于氧化膜中.随着氧化膜厚度的增加,内部氧化越来越不充分,TiO_2的含量减少,并逐渐出现Ti:O_3,TiO;并且阳极氧化处理明显增厚了表面氧化膜. 关键词:钛合金; 阳极氧化; XPS; Titanium alloy; Anodic oxide film; XPS; [全文内容正在添加中] ......
by means of anodic polarization method, the phase structures and surface microstructures of Al/Pb and α-PbO2 deposition layers were tested by means of X-ray diffraction (XRD) and scanning electron... words: Al/Pb substrate; α-PbO2; electrosynthesis; anodic polarization 1 Introduction The anode material is one of the critical components in the process of zinc electrowinning. The direction and kinetics......
of the double ionic layer located at the oxide interface could accelerate the film growth rate. The anodic oxidative layer with thickness of 8-9 μm and pore diameter of 10-14 nm maintains the pattern...]. The formation of anodic aluminum oxide (AA) film includes two parts. For one part, several acids and mixtures [2] are practically applied for traditional anodizing processes, such as sulfuric acid......
化铝合金耐蚀性的后处理方法. 关键词:铝合金；阳极氧化膜；小电流镀铜；改性；电解着色 中图分类号:TG 174.4 文献标识码:A Modification of copper plating at low current density on anodic film of LC4 aluminum alloy MENG..., China, 2. Center of Aviation Safety Technology, CAAC, Beijing 100028, China) Abstract: Copper plating at a low current density (0.1 mA/cm2) was carried out on the anodic film of LC4 aluminum alloy. XRD......
by using SEM, EDS, and XRD, respectively, and the bonding mechanism of the anodic oxidized film-Al coating-substrate of S355 steel was discussed. The experimental results show that Al and O of the anodic oxidized film appears the enrichment phenomenon, existing in the form of Al2O3. The Al and O atoms in the oxidized film are distributed with high concentration, and the system of oxidized film-Al......
Electrochemical performance of organic film on copper surface by polymer plating of 6-mercapto-1, 3, 5-triazine-2, 4-dithiol monosodium YE Qi(叶 奇), KANG Zhi-xin(康志新), LI Yuan-yuan(李元元... monosodium (TTN) compound was used to fabricate an organic film on pure copper. The polymer plating process of TTN on pure copper in Na2CO3 aqueous solution and the growth mechanism of poly......
be correlated with the applied current pattern. During the low current density period, the impact of oxygen bubbles is much less intense, and the anodic film is less readily detached from the anode. Moreover... June 2014; accepted 9 September 2014 Abstract: The anodic layer and oxygen evolution behavior of Pb-Ag-Nd alloy during pulse current polarization and constant current polarization in 160 g/L H2SO4......
of composite-oxides were synthesized within a porous anodic aluminum oxide(AAO) template by a citrate-based sol-gel route. A vacuum system was applied to draw the gel into the template pores, which... that the CuO nanowires are very uniformly assembled and parallel to each other in the pores of the anodic aluminum oxide(AAO) template membranes. The results of X-ray diffraction(XRD) and the selected-area......
