Comparison of the early stages of corrosion of copper and iron investigated by in situ TM-AFM
Comparison of the early stages of corrosion of copper and iron investigated by in situ TM-AFM
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DOI：
10.1016/s0169-4332(02)00491-9
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发表时间：
2002-06-05
影响因子：
6.7
通讯作者：
Leygraf, C
中科院分区：
文献类型：
--
作者：
Kleber, C;Weissenrieder, J;Leygraf, C
采用轻敲模式原子力显微镜（TM-AFM）研究了纯铜和纯铁大气腐蚀的早期阶段。通过这种方法获得的信息是样品表面形貌的变化，重点是。在风化的前1300分钟内生长的腐蚀产物的形状和横向分布。在80和90%相对湿度（RH）的合成空气中进行了调查，并添加了250 ppb的SO2和250 ppb的NO2。在抛光的铜表面上，在80%RH和250 ppb SO2下已经可以观察到腐蚀产物的生长，而铁表面必须暴露于90%RH和250 ppb SO2和250 ppb NO下，才能在表面上产生可检测的变化。(C)2002 Elsevier Science B.V.保留所有权利。
Tapping mode atomic force microscopy (TM-AFM) was used for the investigation of the early stages of atmospheric corrosion of pure copper and pure iron. The information obtained by this method is the change of the topography of the sample surfaces with emphasis on the. shape and lateral distribution of the corrosion products grown within the first 1300 min of weathering. Investigations were carried out in synthetic air at 80 and 90% relative humidity (RH) with additions of 250 ppb SO2 and 250 ppb NO2. On a polished copper surface the growth of corrosion products could be observed already at 80% RH and 250 ppb SO2, whereas an iron surface had to be exposed to 90% RH with 250 ppb SO2 and 250 ppb NO, to produce detectable changes on the surface. (C) 2002 Elsevier Science B.V. All rights reserved.