Erosion–corrosion and synergistic effects in disturbed liquid-particle flow

Malka, Ramakrishna; Nešić, Srdjan; Gulino, Daniel A.

doi:10.1016/j.wear.2006.08.029

Cited by 125 publications

(60 citation statements)

References 19 publications

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“…This is because of the detachment of the flakes formed by repeated impacts of solid particles. This observation supports previous speculation [2,23,24] that erosion affect corrosion by increasing local turbulence/mass transfer and by surface roughening.…”

Section: Introductionsupporting

confidence: 92%

Mechanical and Electrochemical Synergism of API X42 Pipeline Steel During Erosion–Corrosion

Islam

Farhat

2015

J Bio Tribo Corros

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Hydro-transportation is an economic and flexible way to transport natural resources such as oil and gas from excavation to the extraction plants, refineries, and consumer-ready products to markets. However, interaction between solid particles, corrosive fluid, and target material often results in significant mutual reinforcement due to the combined action of erosion and corrosion. In this study, erosion-corrosion behavior of API pipeline steel has been assessed in 2 g l -1 NaCl solution purged with CO 2 as the corrosive media and aluminum oxide as the erodent. Four different particle velocities (36, 47, 63, and 81 m s -1 ) were employed, while the angle of incidence was kept constant at 90°. The synergism between erosion and corrosion has been studied by means of a newly designed test approach to mitigate the limitations of the in situ method and to identify the effect of erosion on corrosion and vice versa. The corrosion process was monitored using potentiodynamic polarization and weight loss measurements. Total material loss rate and the components of erosion, corrosion, and their synergistic interactions have been determined. Scanning electron microscopy examination and experimental results show that there is an immense correlation between erosion and corrosion. Significant synergism was observed due to the interaction of different erosion and corrosion mechanisms.

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Section: Introductionsupporting

confidence: 92%

Mechanical and Electrochemical Synergism of API X42 Pipeline Steel During Erosion–Corrosion

Islam

Farhat

2015

J Bio Tribo Corros

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“…Malka et al [18] give an example of where positive synergies are dominant and have looked at whether erosion enhances corrosion and/or corrosion enhances erosion in pipe loop experiments on uncoated AISI 1018 carbon steel in 1 wt% NaCl solutions purged with CO 2 (partial pressure of 1.2 bar) and containing 2 wt% silica sand (275 µm). They found that erosion enhances corrosion and corrosion enhances erosion but the dominant synergistic effect was that of corrosion on erosion i.e.…”

Section: Wear-corrosion Interactionsmentioning

confidence: 99%

Tribo-corrosion of coatings: a review

Wood¹

2007

J. Phys. D: Appl. Phys.

231

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This paper reviews the available literature relating to the emerging research into the performance of coatings under combined wear and corrosion conditions. Understanding how coatings perform under these tribo-corrosion conditions is essential if the service life of equipment is to be predicted and to allow service life to be extended. Therefore, the tribo-corrosion performance of coatings deposited by a variety of techniques is discussed and the main mechanisms associated with their degradation under combined wear and corrosion highlighted. Coating composition, microstructure, defect level, adhesion, cohesion and substrate properties are seen as some of the critical elements in coating performance when subjected to tribo-corrosion contacts. The importance of post-coating deposition treatments such as laser resurfacing and sealing are also discussed. Interactions between wear and corrosion mechanisms are identified along with some models and mapping techniques that aim to inform coating selection and predict performance. Recent investigations into mono-layer as well as multilayered and functionally graded coatings are reviewed as candidates for wear-corrosion resistant surfaces. The review reveals the need for a more considered approach to tribo-corrosion testing and the way in which the results are analysed and presented. For example, the test conditions should be appropriate to the coating system under test; the level of in situ instrumentation deployed and the post-test analysis of in situ electrochemical data should be carefully selected as well as details given of the composition of any surface tribofilms formed and the identification of the degradation mechanisms.

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“…This combined interaction between erosional aspects of cavitation and corrosion is termed as synergy. Several studies have been conducted and proven the existence of synergy between cavitation erosion and corrosion on marine materials such as stainless steel (SS), copper alloys, manganese bronze, and NAB among others [7], [18]- [30].…”

Section: Introductionmentioning

confidence: 99%