Influence of Heat Treatment Temperature on Corrosion Characteristics of Biodegradable EW10X04 Mg Alloy Coated with Nd

Galit Katarivas Levy; Eli Aghion

doi:10.1002/adem.201500253

Influence of Heat Treatment Temperature on Corrosion Characteristics of Biodegradable EW10X04 Mg Alloy Coated with Nd

Galit Katarivas Levy, Eli Aghion

Ben-Gurion University of the Negev

Research output: Contribution to journal › Article › peer-review

Abstract

The effect of heat treatment temperature (150, 350, and 550°C) on corrosion of biodegradable EW10X04 Mg alloy coated with Nd was tested in PBS solution. The microstructure was examined by SEM, XRD, and XPS analysis and corrosion resistancewas evaluated by immersion test,potentiodynamic polarization and EIS analysis. Comparatively the complex microstructure of the surface obtained after heat treatment at 350°C has the best corrosion resistance. This was mainly due to the formation of a nearly continuous network of Mg₄₁Nd₅ that acts as a protective barrier around α-Mg grains. The heat treatment at 150°C was not effective in creating a similar protective network. In the heat treatment at 550°C, a new intermetallic phase (Mg₃Nd)was formed having a detrimental effect on corrosion resistance.

Original language	American English
Pages (from-to)	269-276
Number of pages	8
Journal	Advanced Engineering Materials
Volume	18
Issue number	2
DOIs	https://doi.org/10.1002/adem.201500253
State	Published - 1 Feb 2016

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics

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title = "Influence of Heat Treatment Temperature on Corrosion Characteristics of Biodegradable EW10X04 Mg Alloy Coated with Nd",

abstract = "The effect of heat treatment temperature (150, 350, and 550°C) on corrosion of biodegradable EW10X04 Mg alloy coated with Nd was tested in PBS solution. The microstructure was examined by SEM, XRD, and XPS analysis and corrosion resistancewas evaluated by immersion test,potentiodynamic polarization and EIS analysis. Comparatively the complex microstructure of the surface obtained after heat treatment at 350°C has the best corrosion resistance. This was mainly due to the formation of a nearly continuous network of Mg41Nd5 that acts as a protective barrier around α-Mg grains. The heat treatment at 150°C was not effective in creating a similar protective network. In the heat treatment at 550°C, a new intermetallic phase (Mg3Nd)was formed having a detrimental effect on corrosion resistance.",

author = "{Katarivas Levy}, Galit and Eli Aghion",

note = "Publisher Copyright: {\textcopyright} 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.",

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AU - Aghion, Eli

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N2 - The effect of heat treatment temperature (150, 350, and 550°C) on corrosion of biodegradable EW10X04 Mg alloy coated with Nd was tested in PBS solution. The microstructure was examined by SEM, XRD, and XPS analysis and corrosion resistancewas evaluated by immersion test,potentiodynamic polarization and EIS analysis. Comparatively the complex microstructure of the surface obtained after heat treatment at 350°C has the best corrosion resistance. This was mainly due to the formation of a nearly continuous network of Mg41Nd5 that acts as a protective barrier around α-Mg grains. The heat treatment at 150°C was not effective in creating a similar protective network. In the heat treatment at 550°C, a new intermetallic phase (Mg3Nd)was formed having a detrimental effect on corrosion resistance.

AB - The effect of heat treatment temperature (150, 350, and 550°C) on corrosion of biodegradable EW10X04 Mg alloy coated with Nd was tested in PBS solution. The microstructure was examined by SEM, XRD, and XPS analysis and corrosion resistancewas evaluated by immersion test,potentiodynamic polarization and EIS analysis. Comparatively the complex microstructure of the surface obtained after heat treatment at 350°C has the best corrosion resistance. This was mainly due to the formation of a nearly continuous network of Mg41Nd5 that acts as a protective barrier around α-Mg grains. The heat treatment at 150°C was not effective in creating a similar protective network. In the heat treatment at 550°C, a new intermetallic phase (Mg3Nd)was formed having a detrimental effect on corrosion resistance.

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Influence of Heat Treatment Temperature on Corrosion Characteristics of Biodegradable EW10X04 Mg Alloy Coated with Nd

Abstract

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