碳钢,耐候钢在3种典型大气环境中的腐蚀规律研究

doi:10.11902/1005.4537.2015.010

中国腐蚀与防护学报

2016, Vol. 36

Issue (1): 39-46 DOI: 10.11902/1005.4537.2015.010

本期目录 | 过刊浏览

碳钢,耐候钢在3种典型大气环境中的腐蚀规律研究

汪川(

),曹公旺,潘辰,王振尧,刘淼然

中国科学院金属研究所沈阳 110016

Atmospheric Corrosion of Carbon Steel and Weathering Steel in Three Environments

Chuan WANG(

),Gongwang CAO,Chen PAN,Zhenyao WANG,Miaoran LIU

Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

全文: PDF(4780 KB) HTML

摘要:

针对热带雨林大气,海洋大气和工业大气3种环境开展碳钢和耐候钢的大气腐蚀规律研究.结果表明,碳钢和耐候钢在同一地区的动力学规律和产物以及产物间转化规律基本相似,但在不同地区的腐蚀机理差别很大,碳钢在海洋大气的腐蚀速率极高,该地区碳钢年腐蚀速率分别是工业大气的8.6倍,是热带雨林大气的29.4倍,导致这种差异的原因在于不同地区大气腐蚀特征因子不同.

Abstract：

Atmospheric corrosion of carbon steel Q235 and 45#, and weathering steel Corten A was studied in three typical atmospheres at tropic rainforest-, marine- and industrial-exposure sites respectively. Results show that the carbon steels and the weathering steel exhibited more or less the same corrosion kinetics, the formation of rusts and their evolution for exposure in one test site. But they were significant different from those for exposure in other test sites. Finally, the influence factors on corrosion process and the corrosivity of the three atmospheres were also discussed.

Key words： carbon steel weathering steel atmospheric corrosion conversion of rust semipermeable membrane

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引用本文:

汪川,曹公旺,潘辰,王振尧,刘淼然. 碳钢,耐候钢在3种典型大气环境中的腐蚀规律研究[J]. 中国腐蚀与防护学报, 2016, 36(1): 39-46.
Chuan WANG, Gongwang CAO, Chen PAN, Zhenyao WANG, Miaoran LIU. Atmospheric Corrosion of Carbon Steel and Weathering Steel in Three Environments. Journal of Chinese Society for Corrosion and protection, 2016, 36(1): 39-46.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2015.010 或 https://www.jcscp.org/CN/Y2016/V36/I1/39

表1 碳钢和耐候钢的化学组成

表2 实验站的环境参数

表3 实验站的污染物参数

图1 碳钢和耐候钢在不同地区大气腐蚀速率随时间的变化曲线

表4 碳钢和耐候钢曝晒第1 a的腐蚀速率及相应的腐蚀性等级

图2 耐候钢在3个地区暴露第1 a的锈层形貌

表5 耐候钢在3个地区暴露第1 a锈层表面的元素含量

表6 耐候钢在西双版纳地区锈层的元素含量

表7 碳钢和耐候钢在3个地区曝晒第1 a的大气腐蚀产物

图3 耐候钢在西双版纳地区暴露不同周期的锈层形貌

图4 Q235钢在西双版纳地区大气腐蚀产物的红外光谱

图5 Q235钢和耐候钢在江津地区曝晒3个月的腐蚀形貌

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