Plasma electrolytic oxidation of coupled light metals

A. Baron-Wiecheć; M. Curioni; R. Arrabal; E. Matykina; P. Skeldon; G. E. Thompson

doi:10.1179/0020296712Z.00000000083

Plasma electrolytic oxidation of coupled light metals

A. Baron-Wiecheć^*, M. Curioni, R. Arrabal, E. Matykina, P. Skeldon, G. E. Thompson

^*Corresponding author for this work

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

13 Scopus citations

Abstract

In order to assess the practicality of plasma electrolytic oxidation of parts consisting of more than one light metal, coupled metals, namely aluminium/AA 7075 aluminium alloy and AA 7075 aluminium alloy/ZE41 magnesium alloy, have been treated under alternating current conditions using constant total currents. Monitoring of the current flow to each component of the couples revealed differences in current densities on each metal, which varied with time. However, for the selected conditions, microdischarges were sustained on both metals and coatings were produced with thicknesses reasonably similar to those of coating on metals treated individually. Further, the transition to 'soft' sparking occurred at about the same time on both components of the couples.

Original language	English
Pages (from-to)	107-112
Number of pages	6
Journal	Transactions of the Institute of Metal Finishing
Volume	91
Issue number	2
DOIs	https://doi.org/10.1179/0020296712Z.00000000083
State	Published - Mar 2013
Externally published	Yes

Keywords

Al alloys
Coupled light metals
Mg alloys
Plasma electrolytic oxidation

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10.1179/0020296712Z.00000000083

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title = "Plasma electrolytic oxidation of coupled light metals",

abstract = "In order to assess the practicality of plasma electrolytic oxidation of parts consisting of more than one light metal, coupled metals, namely aluminium/AA 7075 aluminium alloy and AA 7075 aluminium alloy/ZE41 magnesium alloy, have been treated under alternating current conditions using constant total currents. Monitoring of the current flow to each component of the couples revealed differences in current densities on each metal, which varied with time. However, for the selected conditions, microdischarges were sustained on both metals and coatings were produced with thicknesses reasonably similar to those of coating on metals treated individually. Further, the transition to 'soft' sparking occurred at about the same time on both components of the couples.",

keywords = "Al alloys, Coupled light metals, Mg alloys, Plasma electrolytic oxidation",

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T1 - Plasma electrolytic oxidation of coupled light metals

AU - Baron-Wiecheć, A.

AU - Curioni, M.

AU - Arrabal, R.

AU - Matykina, E.

AU - Skeldon, P.

AU - Thompson, G. E.

PY - 2013/3

Y1 - 2013/3

N2 - In order to assess the practicality of plasma electrolytic oxidation of parts consisting of more than one light metal, coupled metals, namely aluminium/AA 7075 aluminium alloy and AA 7075 aluminium alloy/ZE41 magnesium alloy, have been treated under alternating current conditions using constant total currents. Monitoring of the current flow to each component of the couples revealed differences in current densities on each metal, which varied with time. However, for the selected conditions, microdischarges were sustained on both metals and coatings were produced with thicknesses reasonably similar to those of coating on metals treated individually. Further, the transition to 'soft' sparking occurred at about the same time on both components of the couples.

AB - In order to assess the practicality of plasma electrolytic oxidation of parts consisting of more than one light metal, coupled metals, namely aluminium/AA 7075 aluminium alloy and AA 7075 aluminium alloy/ZE41 magnesium alloy, have been treated under alternating current conditions using constant total currents. Monitoring of the current flow to each component of the couples revealed differences in current densities on each metal, which varied with time. However, for the selected conditions, microdischarges were sustained on both metals and coatings were produced with thicknesses reasonably similar to those of coating on metals treated individually. Further, the transition to 'soft' sparking occurred at about the same time on both components of the couples.

KW - Al alloys

KW - Coupled light metals

KW - Mg alloys

KW - Plasma electrolytic oxidation

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DO - 10.1179/0020296712Z.00000000083

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JO - Transactions of the Institute of Metal Finishing

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IS - 2

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Plasma electrolytic oxidation of coupled light metals

Abstract

Keywords

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