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中国腐蚀与防护学报  2011, Vol. 31 Issue (6): 446-452    
  研究报告 本期目录 | 过刊浏览 |
高强铝合金在不同SO2模拟环境中的腐蚀行为及相关性研究
周和荣1,马坚1,李晓刚2,揭敢新1,冯皓1,王俊1,赵钺1
1. 中国电器科学研究院 广州 510300
2. 北京科技大学腐蚀与防护中心 北京 100083
CORROSION BEHAVIORS AND RELATIVITY OF HIGH STRENGTH ALUMINUM ALLOY IN DIFFERENT SIMULATED SO2  ENVIRONMENT
ZHOU Herong1, MA Jian1, LI Xiaogang2, JIE Ganxin1, FENG Hao1, WANG Jun1, ZHAO Yue1
1. China National Electric Apparatus Research Institute, Guangzhou 510300
2. Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083
全文: PDF(2752 KB)  
摘要: 采用扫描电镜(SEM/EDX)、失重法等研究了7A04铝合金在两种模拟SO2气氛条件下的腐蚀行为和规律,以及与江津大气暴晒试验结果的相关性。结果表明,随试验时间的延长,铝合金腐蚀产物不断增多,腐蚀失重与时间的关系符合指数规律C=A•tn;表面腐蚀产物形貌呈团状或圆团状,并不断向外扩展延伸,呈现不均匀的凹凸形貌;腐蚀产物为氢氧化铝和硫酸铝水合物;从腐蚀动力学角度分析, 7A04铝合金在0.067%SO2气氛环境中间隙腐蚀的试验结果与江津户外暴露试验的相关度最高。
关键词 铝合金SO2污染增重法相关性    
Abstract:The corrosion behaviors of high strength aluminum alloy 7A04 in three different experimental conditions have been investigated by scanning electron microscope (SEM), energy dispersive X-ray detection (EDX), Fourier transform infrared(FTIR) and mass loss method, and the relativity has been analyged  with the result of Jiangjin atmospheric environment. The results show that the corrosion product increases with testing hours prolonging, and the mass loss of corrosion product obeys the exponential rule as C=A•tn. Surface observation shows that corrosion product is agglomerated and extended forth. The corrosion products are made up of alumina, aluminum sulfate hydrate and aluminum chloride. The simulation results for the aluminum alloy 7A04 at cyclic wet-heat conditions (40℃,8 h; 25℃, 16 h; 95% RH) in the 0.067% SO2 polluted environment had better correlation with Jiangjin exposure result according to the mass loss data in all simulation methods in the paper.
Key wordsaluminum alloys    SO2 environment    mass loss method    relativity
收稿日期: 2010-09-07     
ZTFLH: 

TG172.3

 
基金资助:

国家自然科学基金项目(50971048)和科技部科技基础条件平台建设项目(2005DTA10400)资助

通讯作者: 周和荣     E-mail: zhouhr_9@163.com
Corresponding author: ZHOU Herong     E-mail: zhouhr_9@163.com
作者简介: 周和荣,男,1972年生,高级工程师,博士,研究方向为金属材料的腐蚀和防护技术

引用本文:

周和荣,马坚,李晓刚,揭敢新,冯皓,王俊,赵钺. 高强铝合金在不同SO2模拟环境中的腐蚀行为及相关性研究[J]. 中国腐蚀与防护学报, 2011, 31(6): 446-452.
ZHOU He-Rong. CORROSION BEHAVIORS AND RELATIVITY OF HIGH STRENGTH ALUMINUM ALLOY IN DIFFERENT SIMULATED SO2  ENVIRONMENT. J Chin Soc Corr Pro, 2011, 31(6): 446-452.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2011/V31/I6/446

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