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| 标 题： |
A comparative study on the corrosion behaviour of simulated archaeological iron in (Cl){sup}-, (NO{sub}3){sup}- and (HSO{sub}3){sup}- bearing pollutants
模拟考古铁在含(Cl)⁻、(NONO₃)⁻和(HSOSO₃)⁻污染物中的腐蚀行为比较研究 |
| 作 者： |
Xia Cao
Chunchun Xu
Weizhen Ouyang
Lijie Yue |
| 关键词： |
Corrosion [腐蚀]
Iron [ 铁] |
| 出版年： |
2005 |
| 期刊名： |
Anti-Corrosion Methods and Materials
防腐方法与材料 |
| 年卷期： |
2005, vol.52, no.4 |
| 摘 要： |
Purpose - The main purpose of this study was to investigate the corrosion behaviour of simulated archaeological iron in (Cl){sup}-, (NO{sub}3){sup}- and (HSO{sub}3){sup}- bearing pollutants. Design/methodology/approach - Periodic wet-dry test, potentiodynamic polarization experiments and surface tension tests were used to study the rule of corrosion rate. Scanning Electron microscopy with EDAX, stereoscopic microscopy and X-ray diffraction were also used to identify the corrosion products and mechanism. Weight loss measurement, electrochemical theory, as well as ions adsorption theory and penetration theory were used to explain the different corrosion behaviour. Findings - The experimental results demonstrated that the attack of anodic ions to the metal at the initial corrosion stage showed great agreement with their surface activity. However, as corrosion progressed, the different reaction mechanisms and the penetration effect of anions as well as the characteristics of the corrosion products (intermediate products and final products) begin to control the corrosion process. Originality/value - The initial corrosion rate was found to show agreement with the surface activity of anions. From a new viewpoint, this paper explains the different corrosion behaviour of CP, NOf and HSOf anions to simulated archaeological iron and offers reference to the individual who pursues in corrosion and protection of metal.
目的——本研究的主要目的是探究模拟考古铁在含(Cl)⁻、(NONO₃)⁻和(HSOSO₃)⁻污染物环境中的腐蚀行为。设计/方法/途径——采用周期性湿干测试、电位动力学极化实验和表面张力测试来研究腐蚀速率规律。同时，利用扫描电子显微镜结合能谱分析（EDAX）、立体显微镜以及X射线衍射技术，对腐蚀产物及其机理进行鉴定。通过重量损失测量、电化学理论、离子吸附理论及渗透理论，解释了不同腐蚀行为的成因。结果——实验结果表明，在初始腐蚀阶段，阳离子对金属的侵蚀作用与其表面活性高度一致。然而，随着腐蚀的持续进行，不同的反应机制、阴离子的渗透效应以及腐蚀产物（中间产物和最终产物）的特性开始主导腐蚀过程。原创性/价值——初始腐蚀速率与阴离子的表面活性表现出一致。从一个新视角出发，本文解释了CP、NONO₃⁻和HSOO₃⁻阴离子在模拟考古铁上的不同腐蚀行为，并为从事金属腐蚀与保护研究的人士提供了参考。 |
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