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首页> 外文会议>International Symposium on Pits and Pores II: Formation, Properties, and Significance for Advanced Materials, Oct 22-27, 2000, Phoenix, AZ >LOCALIZED pH PROFILE OF GALVANIZED STEEL IN ATMOSPHERIC CORROSION PROCESS
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LOCALIZED pH PROFILE OF GALVANIZED STEEL IN ATMOSPHERIC CORROSION PROCESS

机译：大气腐蚀过程中镀锌钢的局部pH分布

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摘要

Atomic force microscopy (AFM) measurements and scanning chemical microscopy (SCHEM) were performed for the investigation of corrosion process of the galvanized steel. The optical microscope and atomic force microscope were used for the observation of corrosion process on the galvanized steel under the atmospheric corrosion condition. It has been proven that AFM system combined with KFM is effective in the investigation of atmospheric corrosion of the steels which otherwise was difficult to evaluate by conventional method. The protection effect to the corrosion of the galvanized steel was not only sacrifice protection of Zinc, but also covering on the iron part with the corrosion product. It was indicated that at the part (Zinc) of less noble potential, the corrosion on the steel was growing under seashore environment. The protective loll to atmospheric corrosion protection was explained by SCHEM system measuring the pH distribution.
机译：进行了原子力显微镜（AFM）测量和扫描化学显微镜（SCHEM）研究镀锌钢的腐蚀过程。用光学显微镜和原子力显微镜观察了大气腐蚀条件下镀锌钢板的腐蚀过程。业已证明，结合了KFM的AFM系统在研究钢的大气腐蚀方面是有效的，否则传统方法很难对其进行评估。对镀锌钢的腐蚀的保护作用不仅是牺牲锌的保护，而且还用腐蚀产物覆盖在铁部件上。结果表明，在高贵电位的部分（锌），在海滨环境下，钢上的腐蚀正在加剧。 SCHEM系统通过测量pH值的分布来说明对大气腐蚀的防护作用。

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