硼-硫酸-草酸电解液降压阳极氧化疏孔膜层制备及表征

Q4 Chemical Engineering

腐蚀科学与防护技术 Pub Date : 2014-04-23 DOI:10.11903/1002.6495.2013.116

王加余, 李澄, 尹成勇, 李西娟, 王艳慧

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引用次数: 0

摘要

以硼酸-硫酸-草酸为电解液，采用三段式法制备了有序的铝合金多孔氧化膜。阐述了在恒流模式和降压模式下氧化膜生长的相关机理。利用扫描电镜(SEM)对氧化膜的形貌和微观结构进行了表征。采用电化学阻抗谱和动电位极化曲线检测了膜在3.5% NaCl溶液中的腐蚀性能。结果表明，制备的阳极膜均匀致密，孔径为10~13 nm。此外，阳极氧化膜的电化学行为可以描述为阻抗和耐腐蚀性随膜和细胞壁厚度的增加而增加。

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硼-硫酸-草酸电解液降压阳极氧化疏孔膜层制备及表征

A well ordered porous oxide film on aluminum alloy was prepared by a three-stage process in electrolyte of boric-sulfuric-oxalic acids. The relevant growth mechanism of oxide film in the processes with modes of galvanostatic and reduced voltage was elaborated. The morphology and microstructure of the oxide films were characterized by scanning electronic microscopy(SEM). The corrosion performance of the films in 3.5% NaCl solution was examined by electrochemical impedance spectroscopy and potentiodynamic polarization curves. The results show that the anodic film exhibits to be regular and dense with pore diameter of 10~13 nm. Moreover, the electrochemical behavior of anodic oxide film could be described as that the impedance and corrosion resistance was increased with the increasing thickness of the film and the cell wall.

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来源期刊

腐蚀科学与防护技术 Chemical Engineering-Chemical Engineering (all)

CiteScore

0.60

自引率

0.00%

发文量

2399

期刊介绍： Corrosion Science and Protection Technology is approved by the General Administration of Press and Publication of the State Council, the Chinese Academy of Sciences, the Chinese Academy of Sciences Institute of Metals organized by the domestic and international public circulation of national periodicals metal surface treatment academic journals. The journal is a professional and technical publication. It reports the scientific and technological achievements in the field of metal corrosion and protection, and publishes research reports, reviews, technical reports, research briefs, failure analysis, experience exchange, etc. The readers are engaged in the field of metal corrosion and protection. The target readers are scientific and technological personnel engaged in metal corrosion and protection and teachers and students of related professional colleges and universities. Corrosion Science and Protection Technology is indexed in CSCD, CSTPCD, CA,MA,SA and other authoritative databases.