Field and laboratory study of cavitation corrosion of nickel aluminium bronze in sea water

Shalaby, H. M.; Al-Hashem, Abdulhameed; Al-Mazeedi, H.; Abdullah, Abdulmajeed

doi:10.1179/000705995798114221

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…To understand the behaviour of NAB in different cavitation erosion and corrosion conditions, substantial studies have been done to understand its microstructural characteristics, and the relationship between cavitation erosion and corrosion occurring in NAB [14]- [17]. This combined interaction between erosional aspects of cavitation and corrosion is termed as synergy.…”

Section: Introductionmentioning

confidence: 99%

Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution

Basumatary

Wood

2020

Tribology International

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Section: Introductionmentioning

confidence: 99%

Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution

Basumatary

Wood

2020

Tribology International

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“…Structure also plays a role in dealloying with martensites being more susceptible because of their defect which is a rich structure [5]. In contrast, at least initially, the nickelrich κ III phase is reported to be more noble than the surrounding α matrix and corrosion around it occurs by the local attack of the α leaving the κ III proud [6][7][8]. In crevices, preferential attack initially occurs this way until the pH drops and then a reversal of the corrosion cell occurs with the κ III phase becoming anodic to the α phase [8].…”

Section: Introductionmentioning

confidence: 99%

“…At large electronegative potentials, growth of a calcareous film slows mass transport. After seawater immersion, complex copper chlorides are often found in the outer parts of the corrosion deposit [6]. A recent study of samples in both simulated seawater and sodium chloride solutions, employing both electrochemical and surface analytical methods, provided several interesting results [10].…”

Section: Introductionmentioning

confidence: 99%

Passivation of Laser-Treated Nickel Aluminum Bronze as Measured By Electrochemical Impedance Spectroscopy

Klassen¹,

Hyatt²,

Roberge³

2000

Canadian Metallurgical Quarterly

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Understanding the general corrosion resistance of these alloys is complicated by the heterogeneous nature of clad surfaces. The clad surface is made up of as-deposited areas and reheated lines which consists of as-deposited material that was reheated sufficiently by a subsequent pass such Abstract -Electrochemical impedance spectroscopy was used to assess the corrosion behavior of the weld zones and surface conditions of a laser-clad nickel aluminum bronze immersed in a 3.5% neutral saline solution. The zones and conditions examined included: (i) as-cast base material; (ii) laser-clad material with the high temperature oxide from welding intact; (iii) polished laser-clad material and (iv) specimens representative of just the as-deposited and reheated zones of the laser-clad surface. A pseudo steady-state level of passivation was reached in all the samples within 40 hours. The reheated zone passivated more slowly than the as-deposited region and both weld zones passivated more quickly than the base material. Electrochemical impedance data illustrated a transition during the passivation process of the polished specimens that is consistent with the development of a film layer that restricted mass transfer. The welding oxide from the laser treatment immediately behaved as a passivation film that was indistinguishable from that which eventually develops on polished specimens.Résumé -On a utilisé la spectroscopie à impédance électrochimique pour évaluer le comportement de corrosion des zones de soudure et les conditions de surface d'un bronze de nickel et d'aluminium plaqué au laser, immergé dans une solution neutre saline à 3.5%. Les zones et les conditions examinées incluaient: (i) matériel de base brut de coulée, (ii) matériel plaqué au laser avec l'oxyde de haute température provenant du soudage, toujours intact, (iii) matériel plaqué au laser, poli et (iv) spécimens représentatifs de zones telles que déposées et de zones re-chauffées de la surface plaquée au laser. Tous les échantillons ont atteint, en dedans de 40 heures, un niveau de passivation en régime pseudopermanent. La zone re-chauffée a été passivée plus lentement que la région telle que déposée et les deux zones de soudure ont été passivées plus rapidement que le matériel de base. Les données d'impédance électrochimique ont illustré une transition lors du procédé de passivation des spécimens polis qui est consistante avec le développement d'une couche en film restreignant le transfert de masse. L'oxyde de soudage provenant du traitement au laser s'est comporté immédiatement comme un film de passivation indistinct de celui qui se développe éventuellement sur les spécimens polis.

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Corrosion control of brass in groundwater by interface and interphase inhibitors

Ramji

Rajeswari

1998

Anti-Corrosion Methods and Materials

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Field and laboratory study of cavitation corrosion of nickel aluminium bronze in sea water

Cited by 4 publications

References 2 publications

Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution

Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution

Passivation of Laser-Treated Nickel Aluminum Bronze as Measured By Electrochemical Impedance Spectroscopy

Corrosion control of brass in groundwater by interface and interphase inhibitors

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