Some Clarifications Regarding Literature on Atmospheric Corrosion of Weathering Steels

International Journal of Corrosion - Tập 2012 - Trang 1-9 - 2012
I. Díaz1, H. Cano1, B. Chico1, D. de la Fuente1, M. Morcillo1
1Department of Surface Engineering, Corrosion, and Durability, National Centre for Metallurgical Research (CENIM/CSIC), Avenida Gregorio del Amo 8, 28040 Madrid, Spain

Tóm tắt

Extensive research work has thrown light on the requisites for a protective rust layer to form on weathering steels (WSs) in the atmosphere, one of the most important is the existence of wet/dry cycling. However, the abundant literature on WS behaviour in different atmospheres can sometimes be confusing and lacks clear criteria regarding certain aspects that are addressed in the present paper. What corrosion models best fit the obtained data? How long does it take for the rust layer to stabilize? What is the morphology and structure of the protective rust layer? What is an acceptable corrosion rate for unpainted WS? What are the guideline environmental conditions, time of wetness (TOW), SO2, and Cl, for unpainted WS? The paper makes a review of the bibliography on this issue.

Từ khóa


Tài liệu tham khảo

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