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Corrosion of Ni-Al Bronze and it’s Main Alloying Elements - Effect of Magnetic Field

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The effect of a uniform magnetic field on the corrosion rate of anodically polarized Ni-Al Bronze in 3,5 wt.% NaCl has been investigated. It was found that the anodic current density increased when magnetic fields of 300 and 1000 mT was applied to the system.

Product Number: 51317--9308-SG
ISBN: 9308 2017 CP
Author: Hedda Krogstad
Publication Date: 2017
Industry: Materials Selection and Design
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A magnetic field exert forces on both moving electrochemical charges and ions with unpaired spin in an electrolyte. The strength of these forces are related to the current density the nature and strength of the magnetic field and the magnetic properties of the ions. To study how the electrochemical rates involved in the corrosion of Ni-Al Bronze are influenced by these forces electrochemical experiments with the alloy and it's main alloying elements (copper aluminium nickel and iron) have been conducted in a cell with a 3.5 wt% NaCl electrolyte at room temperature positioned between the poles of an electromagnet that generates a uniform magnetic field of 0.3-1.0 Tesla.The motivation for the work are reports on corrosion of Ni-Al Bronze in industrial permanent-magnet motors operating in seawater where the corrosion appears to follow patterns coinciding with the pole-configuration of the motors.

Key Words: Ni-Al Bronze, Cu, Magnetic Fields, Permanent Magnet Motors, Seawater, Corrosion

A magnetic field exert forces on both moving electrochemical charges and ions with unpaired spin in an electrolyte. The strength of these forces are related to the current density the nature and strength of the magnetic field and the magnetic properties of the ions. To study how the electrochemical rates involved in the corrosion of Ni-Al Bronze are influenced by these forces electrochemical experiments with the alloy and it's main alloying elements (copper aluminium nickel and iron) have been conducted in a cell with a 3.5 wt% NaCl electrolyte at room temperature positioned between the poles of an electromagnet that generates a uniform magnetic field of 0.3-1.0 Tesla.The motivation for the work are reports on corrosion of Ni-Al Bronze in industrial permanent-magnet motors operating in seawater where the corrosion appears to follow patterns coinciding with the pole-configuration of the motors.

Key Words: Ni-Al Bronze, Cu, Magnetic Fields, Permanent Magnet Motors, Seawater, Corrosion

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Corrosion Properties of Ni-Al Bronze and it’s Main Alloying Elements - Effect of pH

Product Number: 51317--9306-SG
ISBN: 9306 2017 CP
Author: Hedda Krogstad
Publication Date: 2017
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The work is mainly focused on the corrosion mechanism at low pH (>4) and the order of which the discontinuous and continuous intermetallic phases dissolve. Compositions of each phase, and the area ratio between intermetallic phases and the alpha matrix have been calculated as an average of 20 measurements.
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Service Performance of Ni-Al Bronze in Marine Environments

Product Number: 51317--9298-SG
ISBN: 9298 2017 CP
Author: Moavin Islam
Publication Date: 2017
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This paper will present two case studies of pre-mature failure of process equipment in seawater service which will illustrate the influence of metallurgical structure on the service performance of Nickel-Aluminum Bronze in marine environments.
Picture for The Effect of a Magnetic Field on the Galvanic Corrosion of Ni-Al Bronze in Natural Seawater
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51316-7451-The Effect of a Magnetic Field on the Galvanic Corrosion of Ni-Al Bronze in Natural Seawater

Product Number: 51316-7451-SG
ISBN: 7451 2016 CP
Author: Hedda Krogstad
Publication Date: 2016
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