Electrochemical characterization of intermetallic phases common to aluminum alloys as a function of solution temperature

M. K. Cavanaugh; J. C. Li; N. Birbilis; R. G. Buchheit

doi:10.1149/2.0361412jes

Electrochemical characterization of intermetallic phases common to aluminum alloys as a function of solution temperature

M. K. Cavanaugh, J. C. Li, N. Birbilis, R. G. Buchheit

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

81 Scopus citations

Abstract

A practically important scenario in the corrosion of aluminum (Al) alloys is the variation in damage characteristics, i.e. mode, rate and morphology, as function of environmental temperature. In order to address this problem from a mechanistic point of view, this paper presents results for corrosion potentials, pitting potentials and electrochemical characteristics for intermetallic particles commonly present in high strength aluminum alloys, for tests conducted in 0.1M NaCl of varying temperature. Tests were conducted between 0 and 60°C via the use of a micro-capillary electrochemical cell. The intermetallics investigated were Mg₂Si, MgZn₂, Al₇Cu₂Fe, Al₂Cu, Al₂CuMg and Al₃Fe. Analysis of the results reveals that the electrochemical behavior of such compounds is heavily dependent on temperature, with ramifications for localized corrosion (and protection) in Al alloys. Examples of this are shown for AA7075-T651.

Original language	English
Pages (from-to)	C535-C543
Journal	Journal of the Electrochemical Society
Volume	161
Issue number	12
DOIs	https://doi.org/10.1149/2.0361412jes
State	Published - 2014

Bibliographical note

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© The Author(s) 2014. Published by ECS. All rights reserved.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Materials Chemistry
Surfaces, Coatings and Films
Electrochemistry
Renewable Energy, Sustainability and the Environment

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/2.0361412jes

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abstract = "A practically important scenario in the corrosion of aluminum (Al) alloys is the variation in damage characteristics, i.e. mode, rate and morphology, as function of environmental temperature. In order to address this problem from a mechanistic point of view, this paper presents results for corrosion potentials, pitting potentials and electrochemical characteristics for intermetallic particles commonly present in high strength aluminum alloys, for tests conducted in 0.1M NaCl of varying temperature. Tests were conducted between 0 and 60°C via the use of a micro-capillary electrochemical cell. The intermetallics investigated were Mg2Si, MgZn2, Al7Cu2Fe, Al2Cu, Al2CuMg and Al3Fe. Analysis of the results reveals that the electrochemical behavior of such compounds is heavily dependent on temperature, with ramifications for localized corrosion (and protection) in Al alloys. Examples of this are shown for AA7075-T651.",

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AU - Cavanaugh, M. K.

AU - Li, J. C.

AU - Birbilis, N.

AU - Buchheit, R. G.

PY - 2014

Y1 - 2014

N2 - A practically important scenario in the corrosion of aluminum (Al) alloys is the variation in damage characteristics, i.e. mode, rate and morphology, as function of environmental temperature. In order to address this problem from a mechanistic point of view, this paper presents results for corrosion potentials, pitting potentials and electrochemical characteristics for intermetallic particles commonly present in high strength aluminum alloys, for tests conducted in 0.1M NaCl of varying temperature. Tests were conducted between 0 and 60°C via the use of a micro-capillary electrochemical cell. The intermetallics investigated were Mg2Si, MgZn2, Al7Cu2Fe, Al2Cu, Al2CuMg and Al3Fe. Analysis of the results reveals that the electrochemical behavior of such compounds is heavily dependent on temperature, with ramifications for localized corrosion (and protection) in Al alloys. Examples of this are shown for AA7075-T651.

AB - A practically important scenario in the corrosion of aluminum (Al) alloys is the variation in damage characteristics, i.e. mode, rate and morphology, as function of environmental temperature. In order to address this problem from a mechanistic point of view, this paper presents results for corrosion potentials, pitting potentials and electrochemical characteristics for intermetallic particles commonly present in high strength aluminum alloys, for tests conducted in 0.1M NaCl of varying temperature. Tests were conducted between 0 and 60°C via the use of a micro-capillary electrochemical cell. The intermetallics investigated were Mg2Si, MgZn2, Al7Cu2Fe, Al2Cu, Al2CuMg and Al3Fe. Analysis of the results reveals that the electrochemical behavior of such compounds is heavily dependent on temperature, with ramifications for localized corrosion (and protection) in Al alloys. Examples of this are shown for AA7075-T651.

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Electrochemical characterization of intermetallic phases common to aluminum alloys as a function of solution temperature

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

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