聚苯胺/环氧涂层对AZ91D镁合金耐蚀性能的影响

中国腐蚀与防护学报

2010, Vol. 30

Issue (4): 283-287

研究报告

本期目录 | 过刊浏览

聚苯胺/环氧涂层对AZ91D镁合金耐蚀性能的影响

张颖君^1,冯涛^1,2,邵亚薇¹,孟国哲¹,张涛¹,王福会^1,3

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. 广州中船龙穴造船有限公司广州 511458
3. 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 PANI/ EPOXY COATING ON THE CORROSION RESISTANCE OF AZ91D MAGNESIUM ALLOY

ZHANG Yingjun¹, FENG Tao^1,2, SHAO Yawei¹, MENG Guozhe¹, ZHANG Tao¹, WANG Fuhui^1,3

1. Corrosion and Protection Laboratory,College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001
2. CSSC Guangzhou Longxue Shipbuilding Co., Guangzhou, 511458
3. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016

全文: PDF(1394 KB)

摘要:

通过化学氧化法合成本征态及氢氟酸掺杂态聚苯胺(PANI)，用红外光谱对其结构进行表征。以环氧树脂为成膜物质，在AZ91D镁合金基体上制备了本征态及氢氟酸掺杂的 PANI/环氧涂层，用EIS方法研究涂层在3.5%NaCl溶液中的耐蚀性，并用SEM对浸泡后基体表面形貌进行观察。实验结果表明，与环氧清漆相比，本征态PANI的加入明显改善了环氧涂层的耐蚀性，而氢氟酸掺杂后进一步提高了PANI/环氧涂层的性能。用XPS对基体表面分析，发现添加聚苯胺的涂层在镁合金表面形成了具有保护作用的产物膜。

关键词 ：聚苯胺涂层, 氢氟酸掺杂, AZ91D镁合金, EIS, 耐蚀性

Abstract：

The chemical oxidative method was applied to prepare the eigenstate polyaniline (PANI) and hydrofluoric acid doped PANI, whose structure was characterized by FT-IR. Epoxy resin was used as the film-forming substance and to prepare the eigenstate PANI and hydrofluoric acid doped PANI/epoxy coating on AZ91D magnesium alloy surface, and their anti-corrosion properties were studied by means of electrochemical impedance spectroscopy (EIS) in 3.5% NaCl solution. The surface morphology of AZ91D magnesium alloy after immersion was observed by SEM. The results indicated that the addition of eigenstate PANI could significantly improved the corrosion resistance of epoxy varnish coating. However, hydrofluoric acid doped PANI/epoxy coating had better corrosion resistance than eigenstate PANI/epoxy coating. XPS results indicated that the presence of polyaniline changed the chemical structure of the corrosion film on the alloy surface.

Key words： polyaniline coating hydrofluoric acid doped AZ91D magnesium alloy EIS, corrosion resistance

收稿日期: 2009-07-07

ZTFLH:

TG174.4

通讯作者: 邵亚薇 E-mail: shaoyawei@hrbeu.edu.cn

Corresponding author: SHAO Yawei E-mail: shaoyawei@hrbeu.edu.cn

作者简介: 张颖君，女，1984年生，硕士生，研究方向为材料腐蚀与防护

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引用本文:

张颖君,冯涛,邵亚薇,孟国哲,张涛,王福会. 聚苯胺/环氧涂层对AZ91D镁合金耐蚀性能的影响[J]. 中国腐蚀与防护学报, 2010, 30(4): 283-287.
ZHANG Ying-Jun. EFFECT OF PANI/ EPOXY COATING ON THE CORROSION RESISTANCE OF AZ91D MAGNESIUM ALLOY. J Chin Soc Corr Pro, 2010, 30(4): 283-287.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2010/V30/I4/283

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