Effect of cavitation for electrochemical characteristics in seawater for austenitic 304 stainless steel
오스테나이트계 STS 304강의 해수 내 전기화학적 특성에 미치는 캐비테이션의 영향

Seong-Jong Kim, Seung-Jun Lee, Sang-Ok Chong
2013 Journal of the Korean Society of Marine Engineering  
With the industrial acceleration in a lot of countries of the world, the demand for anti-corrosion and anti-abrasion material increases continuously. Particularly, stainless steel with the fine surface and excellent corrosion resistance is widely used in various industrial fields including ship, offshore structures tidal power plant, and etc. In marine environment, however, it is easy to generate by the corrosion damage by Clion and cavitation damage due to high rotation speed on stainless
more » ... d on stainless steel. Therefore, in this research, the cavitation erosion-corrosion test (Hybrid test) was performed for 304 stainless steel specimen used in the high flow rate seawater environment. And the cavitation damage behavior in the corrosive environment was analyzed overall. The high hardness was shown due to the formation of compressive residual stress by the water cavitation peening effect in cavitation condition. However, high current density in the potentiodynamic polarization experiment presented with the breakdown of the passive film caused by physical impact. Therefore, both electrochemical characteristics and mechanical properties must be taken into account to improve the cavitation resistance in seawater.
doi:10.5916/jkosme.2013.37.5.484 fatcat:bwhw3pedwrfclbkvqfieaqxbra