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| Corrosion of Materials and Coatings in the Xinjiang Yili Tekes River Shankou Reservoir |
| Received:October 30, 2016 Revised:February 15, 2017 |
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| DOI：10.7643/ issn.1672-9242.2017.02.014 |
| KeyWord:Tekes River Shankou Reservoir coatings metal corrosion couple of stainless steel and carbon-steel |
| Author | Institution |
| WANG Zhan-hua |
National Center of Quality Inspection & Testing for Hydro-Steel Structure, Ministry of Water Resource, Zhengzhou , China |
| SONG Jiang-yi |
Institute of Hydro-Power Investigation & Design of Xinjiang Province, Urumqi, , China |
| ZHANG Xiao-yang |
National Center of Quality Inspection & Testing for Hydro-Steel Structure, Ministry of Water Resource, Zhengzhou , China |
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| Abstract: |
| Object To understand the corrosion characteristics of coating systems and metals in the Xinjiang Yili Tekes River to help design for water conservancy development of the Tekes River. Methods Samples of metal coating product, coating system and metal material were put at site to sample, observe and compare in different periods. Results Test results on eight metal coatings, fourteen metal coatings with sealing, five zinc rich coatings, ten composite coatings, two carbon steel and five couples of stainless steel and carbon steel in half year and two years were obtained. Conclusion Zinc coating is the best metal coating; epoxy sealer is the best sealer for metal coating; zinc rich epoxy is the best zinc rich coating; chlorinated rubber, epoxy asphalt, epoxy finish paint, solvent-free wear-resisting epoxy are suitable for using as top coatings; aliphatic polyurethane paint, fluorocarbon paint are not fit for using in water; recoatable polyurethane coating shall be used prudently according to the base coating; corrosion rate of carbon steel increases with the increase of stainless steel area, and typical linear relationship exists between corrosion rate of carbon and ratio of carbon area and stainless steel area; the larger the proportion of stainless steel, the faster the corrosion rate of carbon steel; the galvanized layer obviously protects wire rope. The corrosion of galvanized steel wire rope is less severe than that of ungalvanized steel wire rope. |
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