载波钝化对AZ91D镁合金锡酸盐化学转化膜耐蚀性能的影响

中国腐蚀与防护学报

2010, Vol. 30

Issue (5): 341-346

研究报告

本期目录 | 过刊浏览

载波钝化对AZ91D镁合金锡酸盐化学转化膜耐蚀性能的影响

刘晓兰¹,陈杰¹,曹靖涛¹,崔中雨¹,张涛¹,邵亚薇¹,孟国哲¹,王福会^1,2

1. 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哈尔滨 150001
2. 中国科学院金属研究所金属腐蚀与防护国家重点实验室沈阳 110016

EFFECT OF ALTERNATING CURRENT MODULATED PASSIVATION ON THE CORROSION RESISTANCE OF STANNATE CONVERSION COATING ON AZ91D ALLOY

LIU Xiaolan¹, CHEN Jie¹, CAO Jingtao¹,CUI Zhongyu¹, ZHANG Tao¹,SHAO Yawei¹, MENG Guozhe¹, WANG Fuhui^1,2

1. Corrosion and Protection Laboratory, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001
2. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016

全文: PDF(1407 KB)

摘要: 用载波钝化方法控制AZ91D镁合金锡酸盐转化膜成膜过程，用扫描电镜（SEM）观察该转化膜的表面形貌，用极化曲线和电化学阻抗谱研究载波钝化对该转化膜耐蚀性能的影响。结果表明, 载波钝化使AZ91D镁合金表面生成一层颗粒直径略大于传统浸泡处理的锡酸盐转化膜，其耐蚀性能显著提高。

关键词 ： AZ91D镁合金, EIS, 载波钝化, 转化膜, 耐蚀性

Abstract：By using alternating current (AC) modulated passivation technique, the formation process of stannate conversion coating could be controlled. The microstructure morphology of the conversion coating was observed by scanning electron microscopy. Polarization curves and electrochemical impedance spectra (EIS) were examined to understand the effect of the AC passivation on the corrosion resistance of the conversion coating. The experimental results revealed that the surface of AZ91D magnesium alloy after the AC passivation was covered by the hemispherical particles whth larger size than that for traditional immersion conversion coating (imm-CC). The corrosion resistance of the conversion coating was significantly improved as a result of the AC passivation.

Key words： magnesium alloy electrochemical impedance spectroscopy alternating current modulated passivation conversion coating corrosion resistance

收稿日期: 2009-04-14

ZTFLH:

TG174.36

基金资助:

国家自然科学基金项目（50601007）资助

通讯作者: 张涛 E-mail: zhangtao@hrbeu.edu.cn

Corresponding author: ZHANG Tao E-mail: zhangtao@hrbeu.edu.cn

作者简介: 刘晓兰，1979年生，女，博士生，研究方向为镁合金腐蚀与防护

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引用本文:

刘晓兰,陈杰,曹靖涛,崔中雨,张涛,邵亚薇,孟国哲,王福会. 载波钝化对AZ91D镁合金锡酸盐化学转化膜耐蚀性能的影响[J]. 中国腐蚀与防护学报, 2010, 30(5): 341-346.
LIU Xiao-Lan. EFFECT OF ALTERNATING CURRENT MODULATED PASSIVATION ON THE CORROSION RESISTANCE OF STANNATE CONVERSION COATING ON AZ91D ALLOY. J Chin Soc Corr Pro, 2010, 30(5): 341-346.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2010/V30/I5/341

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