Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-27T10:23:49.103Z Has data issue: false hasContentIssue false
  • English
  • Français

An Investigation on the Optimum Corrosion Protection Potential for Minimization of Cavitation Damage Using the Potentiostatic Method in Seawater

Published online by Cambridge University Press:  06 August 2013

Seong-Jong Kim ,
Seok-Ki Jang  and
Jae-Cheul Park
Seong-Jong Kim*
Affiliation:
Division of Marine System Engineering, Mokpo Maritime University, Haeyangdaehak-ro 91 Mokpo-si, Jeonnam 530-729, Korea
Seok-Ki Jang
Affiliation:
Division of Marine System Engineering, Mokpo Maritime University, Haeyangdaehak-ro 91 Mokpo-si, Jeonnam 530-729, Korea
Jae-Cheul Park
Affiliation:
Korean Register of Shipping, 17, Gukhoe-daero 68-gil, Yeongdeungpo-gu, Seoul 150-871, Republic of Korea
*
*Corresponding author. E-mail: [email protected]
Get access

Abstract

In this study, we replaced the expensive blade material with an aluminum–bronze alloy that has excellent corrosion resistance and cavitation characteristics and developed the corrosion protection method to improve durability using an electrochemical method. The objective of this study was to identify the electrochemical corrosion protection conditions to minimize cavitation damage due to generating hydrogen gas (2H2O + 2e− → 2OH− + H2) by means of hydrogen overvoltage before the impact pressure of the cavity is transferred to the surface. In the constant potential experiment under the cavitation environment, the energy was reflected or cancelled out by collision of the cavities with the hydrogen gas generated by the hydrogen overvoltage. As a result, the optimal corrosion prevention potential in the dynamic state is assumed to be the range of −1.4 to −1.7 V, which is the range at which active polarization took place.

Keywords

aluminum–bronze alloyelectrochemical corrosion protection conditionhydrogen overvoltagecavitation environment
Type
Research Article
Information
Microscopy and Microanalysis , Volume 19 , Supplement S5: IUMAS , August 2013 , pp. 73 - 76
Copyright
Copyright © Microscopy Society of America 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Elhoud, A.M., Renton, N.C. & Deans, W.F. (2010). Hydrogen embrittlement of super duplex stainless steel in acid solution. Int J Hydrogen Energy 35, 6455–6464.Google Scholar
Kim, S.T., Kim, S.Y., Lee, I.S., Park, Y.S., Shin, M.C. & Kim, Y.S. (2011). Effects of shielding gases on the microstructure and localized corrosion of tube-to-tube sheet welds of super austenitic stainless steel for seawater cooled condenser. Corrosion Sci 53, 2611–2618.10.1016/j.corsci.2011.04.021Google Scholar
Lee, H.J., Jo, H.R., Chu, Y.S. & Bahk, K.S. (2004). Sediment transport on macrotidal flats in Garolim Bay, west coast of Korea: Significance of wind waves and asymmetry of tidal currents. Continental Shelf Res 24, 821–832.10.1016/j.csr.2004.01.005Google Scholar
Liu, H.W., Ma, S., Li, W., Gu, H.G., Lin, Y.G. & Sun, X.J. (2011). A review on the development of tidal current energy in China. Renewable Sustainable Energy Rev 15, 1141–1146.10.1016/j.rser.2010.11.042Google Scholar
Michler, T., Lee, Y.W., Gangloff, R.P. & Naumann, J. (2009). Influence of macro segregation on hydrogen environment embrittlement of SUS 316L stainless steel. Int J Hydrogen Energy 34, 3201–3209.Google Scholar