Development of Copper Corrosion Products and Relation between Surface Appearance and Corrosion Rate

Tran Thi Ngoc Lan; Nguyen Thi Thanh Binh; Nguyen Nhi Tru; Tsujino Yoshino; Maeda Yasuki

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자료유형: 학술저널

저자정보: Tran Thi Ngoc Lan Nguyen Thi Thanh Binh Nguyen Nhi Tru Tsujino Yoshino Maeda Yasuki

저널정보: 한국부식방식학회 Corrosion Science and Technology Corrosion Science and Technology 제7권 제2호

발행연도: 2008.1

수록면: 99 - 111 (13page)

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Copper was exposed unsheltered and sheltered in four humid tropical sites, representing urban, urban-industrial, urban-marine and rural environments. The corrosion rates and the sequence of corrosion product formation are presented and discussed in relation with climatic and atmospheric pollution parameters. Chemical compositions of corrosion products were found to depend on environments and duration of exposure. In all environments, cuprite was the predominating corrosion product that formed first and continuously increased during the exposure. Among the sulphur-containing corrosion products, posnjakite and brochantite were more frequently found and the first formed earlier. Nantokite was the most common chlorine-containing products for most cases, except the high-chloride environment, where atacamite was detected instead. The corrosion rate of copper was well indicated by the colour of patina. The red-purple colour corresponded to the high corrosion rate and the greenish grey colour corresponded to the low corrosion rate. Corrosion rate of sheltered copper in urban-marine environment increased with the exposure time.

#copper corrosion #corrosion product #corrosion rate #brochantite #nantokite.

참고문헌 (24)

참고문헌 신청

A. R. Mendoza / 2000 / / Corros. Sci 42 : 1123 ~

A. Stoch / 2001 / / J. Mol. Struc 596 : 201 ~

B. Rosales / 1999 / / Corros. Sci 41 : 625 ~

C. Karlen / 2002 / / Environ. Pollut 120 : 691 ~

C. Leygraf / 2000 / Atmospheric corrosion / A John Wiley & Sons : 102 ~

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