Enhanced mechanical properties and increased corrosion resistance of a biodegradable magnesium alloy by plasma electrolytic oxidation (PEO)

Leon White; Youngmi Koo; Sudheer Neralla; Jagannathan Sankar; Yeoheung Yun

doi:10.1016/j.mseb.2016.02.005

Enhanced mechanical properties and increased corrosion resistance of a biodegradable magnesium alloy by plasma electrolytic oxidation (PEO)

Leon White
, Youngmi Koo
, Sudheer Neralla
, Jagannathan Sankar
, Yeoheung Yun

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

96 Scopus citations

Abstract

We report the enhanced mechanical properties of AZ31 magnesium alloys by plasma electrolytic oxidation (PEO) coating in NaOH, Na2SiO3, KF and NaH2PO4·2H2O containing electrolytes. Mechanical properties including wear resistance, surface hardness and elastic modulus were increased for PEO-coated AZ31 Mg alloys (PEO-AZ31). DC polarization in Hank's solution indicating that the corrosion resistance significantly increased for PEO-coating in KF-contained electrolyte. Based on these results, the PEO coating method shows promising potential for use in biodegradable implant applications where tunable corrosion and mechanical properties are needed.

Original language	English
Pages (from-to)	39-46
Number of pages	8
Journal	Materials Science and Engineering: B
Volume	208
DOIs	https://doi.org/10.1016/j.mseb.2016.02.005
State	Published - Jun 1 2016

Keywords

Biodegradable materials
Coated AZ31 alloy
Magnesium
Plasma electrolytic oxidation (PEO)

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10.1016/j.mseb.2016.02.005

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title = "Enhanced mechanical properties and increased corrosion resistance of a biodegradable magnesium alloy by plasma electrolytic oxidation (PEO)",

abstract = "We report the enhanced mechanical properties of AZ31 magnesium alloys by plasma electrolytic oxidation (PEO) coating in NaOH, Na2SiO3, KF and NaH2PO4·2H2O containing electrolytes. Mechanical properties including wear resistance, surface hardness and elastic modulus were increased for PEO-coated AZ31 Mg alloys (PEO-AZ31). DC polarization in Hank's solution indicating that the corrosion resistance significantly increased for PEO-coating in KF-contained electrolyte. Based on these results, the PEO coating method shows promising potential for use in biodegradable implant applications where tunable corrosion and mechanical properties are needed.",

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author = "Leon White and Youngmi Koo and Sudheer Neralla and Jagannathan Sankar and Yeoheung Yun",

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T1 - Enhanced mechanical properties and increased corrosion resistance of a biodegradable magnesium alloy by plasma electrolytic oxidation (PEO)

AU - White, Leon

AU - Koo, Youngmi

AU - Neralla, Sudheer

AU - Sankar, Jagannathan

AU - Yun, Yeoheung

PY - 2016/6/1

Y1 - 2016/6/1

N2 - We report the enhanced mechanical properties of AZ31 magnesium alloys by plasma electrolytic oxidation (PEO) coating in NaOH, Na2SiO3, KF and NaH2PO4·2H2O containing electrolytes. Mechanical properties including wear resistance, surface hardness and elastic modulus were increased for PEO-coated AZ31 Mg alloys (PEO-AZ31). DC polarization in Hank's solution indicating that the corrosion resistance significantly increased for PEO-coating in KF-contained electrolyte. Based on these results, the PEO coating method shows promising potential for use in biodegradable implant applications where tunable corrosion and mechanical properties are needed.

AB - We report the enhanced mechanical properties of AZ31 magnesium alloys by plasma electrolytic oxidation (PEO) coating in NaOH, Na2SiO3, KF and NaH2PO4·2H2O containing electrolytes. Mechanical properties including wear resistance, surface hardness and elastic modulus were increased for PEO-coated AZ31 Mg alloys (PEO-AZ31). DC polarization in Hank's solution indicating that the corrosion resistance significantly increased for PEO-coating in KF-contained electrolyte. Based on these results, the PEO coating method shows promising potential for use in biodegradable implant applications where tunable corrosion and mechanical properties are needed.

KW - Biodegradable materials

KW - Coated AZ31 alloy

KW - Magnesium

KW - Plasma electrolytic oxidation (PEO)

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JO - Materials Science and Engineering: B

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Enhanced mechanical properties and increased corrosion resistance of a biodegradable magnesium alloy by plasma electrolytic oxidation (PEO)

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