Atmospheric corrosion in subtropical areas: XRD and electrochemical study of zinc atmospheric corrosion products in the province of Santa Cruz de Tenerife (Canary Islands, Spain)
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- 作者：J. Morales ; F. Dí ; az ; J. Herná ; ndez-Borges and S. Gonzá ; lez
- 关键词：Atmospheric corrosion ; Subtropical areas ; Zinc ; Corrosion products ; X-ray diffraction ; Breakdown resistance
- 刊名：Corrosion Science
- 出版年：2006
- 出版时间：February 2006
- 年：2006
- 卷：48
- 期：2
- 页码：361-371
- 全文大小：234 K
文摘
In the present paper, zinc sheets have been exposed for 4 years to the action of different atmospheres in 35 test sites located in the province of Santa Cruz de Tenerife, Canary Islands, Spain. Corrosion products formed on the surface of the samples have been identified by means of X-ray diffraction (XRD) for the first and second year of exposure. Zincite, hydrozincite, simonkolleite, zinc chlorohydroxysulphate, zinc oxysulphate and zinc hydroxysulphate have been identified in the test sheets. Preliminary results of an electrochemical study of the breakdown potential of zinc samples are also presented in order to test the protective effect of the film formed on the surface of the samples. It was found that the protective effect of this film increases linearly with exposure time.