Corrosion evaluation of a newly developed high-strength steel in marine environments
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
This study aims to evaluate the corrosion behavior of a newly developed high-strength steel in marine environments. Metals used in seawater are easily deteriorated because of the presence of corrosive species such as chloride ions in it. Seawater causes much higher corrosion than fresh water. Thus, the corrosion of steel in marine environment has been recognized as a crucial problem in designing structures which cannot be cathodically protected. In this study, the corrosion resistance of a newly developed high-strength steel was evaluated. Four different specimens were tested to confirm the corrosion resistance. The exposure corrosion test was carried out by exposing the specimens to different marine environments such as atmospheric, tidal, splash, and submerged zones for two years. The specimens taken out from each location were cleaned ultrasonically and chemically prior to the evaluation of their corrosion resistance by the weight loss method. Finally, the pitting depth of the specimens was also measured to evaluate their pitting corrosion. The conditions used for the corrosion test were similar to the environmental conditions. The corrosion test results revealed that the corrosion rate and pitting corrosion of the newly developed high-strength steel was lower than that of the other carbon steels.
Abstract
This study aims to evaluate the corrosion behavior of a newly developed high-strength steel in marine environments. Metals used in seawater are easily deteriorated because of the presence of corrosive species such as chloride ions in it. Seawater causes much higher corrosion than fresh water. Thus, the corrosion of steel in marine environment has been recognized as a crucial problem in designing structures which cannot be cathodically protected. In this study, the corrosion resistance of a newly developed high-strength steel was evaluated. Four different specimens were tested to confirm the corrosion resistance. The exposure corrosion test was carried out by exposing the specimens to different marine environments such as atmospheric, tidal, splash, and submerged zones for two years. The specimens taken out from each location were cleaned ultrasonically and chemically prior to the evaluation of their corrosion resistance by the weight loss method. Finally, the pitting depth of the specimens was also measured to evaluate their pitting corrosion. The conditions used for the corrosion test were similar to the environmental conditions. The corrosion test results revealed that the corrosion rate and pitting corrosion of the newly developed high-strength steel was lower than that of the other carbon steels.
참고문헌 (9)
- D. A. Jones, "Principle and Prevention of Corroaion" (1996), Prentice Hall
- R. Feng, "Electrochemical corrosion of ultra-high strength carbon steel in alkaline brines containing hydrogen sulfide", Journal of Electrochemica Acta, 212(10), pp.998~1009 (2016)
- X. Guo, "Stress corrosion cracking behavior of high strength casing steel in working fluids", Journal of Natural Gas Science and Engineering, 29, pp.134~140 (2015)
- I. J. Park, "Pitting corrosion behavior in advanced high strength steels", Journal of Alloys and Compounds, 619(15), pp.205~210 (2014)
- N. Michailidis, "Influence of galvanization on the corrosion fatigue performance of high-strength steel", Surface and Coatings Technology, 259(Part C), pp.456~464 (2014)
- X. H. Lu, "Corrosion performance of high strength 15Cr martensitic stainless steel in severe environments", Journal of Iron and Steel Research, International, 21(8), pp.774~780 (2014)
- Y. Wang, "Effect of pH and chloride on the micro-mechanism of pitting corrosion for high strength pipeline steel in aerated NaCl solutions", Applied Surface Science, 345(15), pp.746~756 (2015)
- F. M. Song, "Predicting the Mechanisms and Crack Growth Rates of Pipelines Undergoing Stress Corrosion Cracking at High pH", Corrosion Science, 51(11), pp.2657~2658 (2009)
- J. A. Jeong, "The experimental measurement on the throwing power of sacrificial anode cathodic protection for concrete piles in natural sea water", Advanced Materials Research, 1125, pp.350~354 (2015)