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http://dx.doi.org/10.5916/jkosme.2012.36.8.1083

Electrochmical Characteristics by Water Cavitation Peening of Cu Alloy  

Kim, Seong-Jong (목포해양대학교 기관시스템 공학부)
Han, Min-Su (목포해양대학교 기관시스템 공학부)
Kim, Min-Sung ((주)디섹)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.36, no.8, 2012 , pp. 1083-1090 More about this Journal
Abstract
Copper alloys are widely used for casting materials including ship's propellers and pump impellers as they provide high corrosion resistance. In addition, the demand for these alloys is increasing with rapid growth of offshore structures and exploitation of various substitute energy sources. However, they require regular maintenance because of erosion and cavitation damages induced by exposure to marine environment at high speed flows for a long period of time. Water cavitation peening have received attention as one of surface modifications for durability improvement of the copper alloys. This is a environment friendly technology without influence of heat and easily applicable to casting materials. In this research, water cavitation peening was employed in distilled water for copper alloy castings as a function of time and evaluation of corrosion resistance was followed in seawater for the modified surface by using electrochemical methods. The result suggests that the water cavitation peening for 2 minutes was found to be the optimal peening parameter in terms of durability and corrosion resistance.
Keywords
Copper alloys; Cavitation damages; Surface modifications; Casting materials; Water cavitation peening;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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