Cavitation corrosion of nodular cast iron (NCI) in seawater

Al-Hashem, Abdulhameed; Abdullah, Abdulmajeed; Riad, W. T.

doi:10.1016/s1044-5803(02)00185-7

Cited by 16 publications

(11 citation statements)

References 5 publications

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“…따라서 해 양 환경 하에서는 전기화학적 부식과 캐비티의 물 리적 외력에 의한 캐비테이션-침식이 복합적으로 발생한다 3) . 캐비테이션에 대한 연구는 오래전부터 꾸준히 진행되어 왔다 [4][5][6][7][8] . 즉, Al-Hashem은 duplex 스테인리스강과 구상흑연주철(nodular cast iron, NCI)에 대해 캐비테이션 조건에서 실험 후 마이크 로 조직(microstructure)의 전·후 변화에 대해 연구 를 발표하였다 5,6) .…”

Section: 서 론unclassified

“…캐비테이션에 대한 연구는 오래전부터 꾸준히 진행되어 왔다 [4][5][6][7][8] . 즉, Al-Hashem은 duplex 스테인리스강과 구상흑연주철(nodular cast iron, NCI)에 대해 캐비테이션 조건에서 실험 후 마이크 로 조직(microstructure)의 전·후 변화에 대해 연구 를 발표하였다 5,6) . 또한 Silva와 Lui는 34Cr-Al-Ni과 Cr-Mn-N 스테인리스강에 대해 각각 캐비테이션-침 식 특성에 대해 연구하였다 7,8) .…”

Section: 서 론unclassified

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Cavitation Damage Behavior for 431 Stainless Steel by Hybrid Test in Sea Water

Chong¹,

Kim²

2013

Journal of the Korean institute of surface engineering

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The demand for stainless steel is continuously increasing with the development in offshore industry due to its excellent corrosion resistance characteristics. However, it suffers cavitation-erosion in application of high rotating fluid and the damage accelerates in combination with electrochemical corrosion because of Clion in sea water. This paper investigated the complex damage behavior for 431 stainless steel, that is one of martensite stainless steels, through the hybrid test in sea water. Various experiments were carried out, including potential measurement, anodic/cathodic polarization experiment and Tafel analysis. Surface morphology was observed and damage depth was analyzed by SEM and 3D microscope after each experiment, respectively. The results revealed that more active potential was observed under cavitation condition than static condition due to breakdown of passive film and activation of charge transfer, and that higher corrosion current density was obtained under cavitation condition due to synergistic effect of corrosion and erosion.

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Section: 서 론unclassified

Cavitation Damage Behavior for 431 Stainless Steel by Hybrid Test in Sea Water

Chong¹,

Kim²

2013

Journal of the Korean institute of surface engineering

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“…It was seen that the form of corrosion changes from the local corrosion to the uniform corrosion. Al-Hashem et al [21,22] investigated the effects of microstructure on cavitation corrosion in seawater of SGCI and reported that the onset of the cavitation erosion was at the graphite/ferrite interface due to micro-galvanic effect and mechanical factors and those micro-cracks were formed alongside corrosion pits. Jeong and Kim [23] examined the effects of plasma nitrating and oxidation surface treatments on corrosion of SGCI.…”

Section: Introductionmentioning

confidence: 99%

Effects of Vermiculariser, Inoculant and Copper Addition on Microstructure and Corrosion Properties of Vermicular Graphite Cast Iron

2022

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“…Yilbas et al [ 8 ] have reported the improved corrosion resistance of cast iron surface treated with laser gas assisted of dual matrix structured. Al-Hashem et al [ 9 ] studied the effect of microstructure of nodular cast iron on its cavitation corrosion behavior in seawater and found that the surface becomes very rough with large size cavity pits. Olawale et al [ 10 ] have evaluated the corrosion behavior of grey cast iron (GCI) and low alloy steel (LAS) in cocoa liquor and well water and found that LAS has better corrosion resistance than GCI in both media, and cocoa liquor is more aggressive than well water.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Cast Iron in Freely Aerated Stagnant Arabian Gulf Seawater

2015

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In this work, the results obtained from studying the corrosion of cast iron in freely aerated stagnant Arabian Gulf seawater (AGS) at room temperature were reported. The study was carried out using weight-loss (WL), cyclic potentiodynamic polarization (CPP), open-circuit potential (OCP), and electrochemical impedance spectroscopy (EIS) measurements and complemented by scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) investigations. WL experiments between two and 10 days’ immersion in the test electrolyte indicated that the weight-loss the cast iron increases with increasing the time of immersion. CPP measurements after 1 h and 24 h exposure period showed that the increase of time decreases the corrosion via decreasing the anodic and cathodic currents, as well as decreasing the corrosion current and corrosion rate and increasing the polarization resistance of the cast iron. EIS data confirmed the ones obtained by WL and CPP that the increase of immersion time decreases the corrosion of cast iron by increasing its polarization resistance.

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Cavitation corrosion of nodular cast iron (NCI) in seawater

Cited by 16 publications

References 5 publications

Cavitation Damage Behavior for 431 Stainless Steel by Hybrid Test in Sea Water

Cavitation Damage Behavior for 431 Stainless Steel by Hybrid Test in Sea Water

Effects of Vermiculariser, Inoculant and Copper Addition on Microstructure and Corrosion Properties of Vermicular Graphite Cast Iron

Corrosion Behavior of Cast Iron in Freely Aerated Stagnant Arabian Gulf Seawater

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