Influence of Inactivation Treatment of Ship��s Ballast Water on Corrosion Resistance of Ship Steel Plate
WANG Zi-xi1,ZHAO Jing-hui2,JIA Xiao-hong1,FANG Jian-guo3,ZHANG Bo4,DING Guo-qing4
1. Department of Precision Instruments and Mechanology, State Key Laboratory of Tribology, Tsinghua University,Beijing 100084, China 2. Powder Metallurgy Division, Advanced Technology and Materials Co. , Ltd. , Beijing 100081, China 3. COSCO Shipbuilding Industry Co. , Beijing 100045, China 4. Qingdao Marine Corrosion Institute, China Iron and Steel Research Institute Group, Qingdao 266071, Shandong, China
Influence of Inactivation Treatment of Ship��s Ballast Water on Corrosion Resistance of Ship Steel Plate
WANG Zi-xi1,ZHAO Jing-hui2,JIA Xiao-hong1,FANG Jian-guo3,ZHANG Bo4,DING Guo-qing4
1. Department of Precision Instruments and Mechanology, State Key Laboratory of Tribology, Tsinghua University,Beijing 100084, China 2. Powder Metallurgy Division, Advanced Technology and Materials Co. , Ltd. , Beijing 100081, China 3. COSCO Shipbuilding Industry Co. , Beijing 100045, China 4. Qingdao Marine Corrosion Institute, China Iron and Steel Research Institute Group, Qingdao 266071, Shandong, China
ժҪ The effect of seawater after ultraviolet inactivation on corrosion of a shipbuilding steel plate was investigated by means of natural corrosion potential experiments and immersion corrosion test. The effects of natural seawater and treated seawater after ultraviolet inactivation on corrosion of the selected steel plate samples were compared with each other. The results showed that there was no obvious change in the chemical composition of treated seawater compared with natural seawater. The corrosion potential slightly increased by 10 mV, whereas the corrosion rate rose significantly by 20%. The experiments verified the naturally formed biofilm in the natural seawater for the inhibition of corrosion on the shipbuilding steel plate. The possible influences of ballast water treatment on biofilm by ultraviolet and electrolysis inactivation under the condition of practical usage were also investigated. And it was found that ballast water treatment methods with no continuous disinfection could protect original tank biofilm structure, reducing the intensity of tank corrosion.
Abstract��The effect of seawater after ultraviolet inactivation on corrosion of a shipbuilding steel plate was investigated by means of natural corrosion potential experiments and immersion corrosion test. The effects of natural seawater and treated seawater after ultraviolet inactivation on corrosion of the selected steel plate samples were compared with each other. The results showed that there was no obvious change in the chemical composition of treated seawater compared with natural seawater. The corrosion potential slightly increased by 10 mV, whereas the corrosion rate rose significantly by 20%. The experiments verified the naturally formed biofilm in the natural seawater for the inhibition of corrosion on the shipbuilding steel plate. The possible influences of ballast water treatment on biofilm by ultraviolet and electrolysis inactivation under the condition of practical usage were also investigated. And it was found that ballast water treatment methods with no continuous disinfection could protect original tank biofilm structure, reducing the intensity of tank corrosion.
WANG Zi-xi,ZHAO Jing-hui,JIA Xiao-hong,FANG Jian-guo,ZHANG Bo,DING Guo-qing. Influence of Inactivation Treatment of Ship��s Ballast Water on Corrosion Resistance of Ship Steel Plate[J]. �й������ڿ���, 2013, 20(11): 85-89.
WANG Zi-xi,ZHAO Jing-hui,JIA Xiao-hong,FANG Jian-guo,ZHANG Bo,DING Guo-qing. Influence of Inactivation Treatment of Ship��s Ballast Water on Corrosion Resistance of Ship Steel Plate. Chinese Journal of Iron and Steel, 2013, 20(11): 85-89.
2013, Vol. 20 
