Characteristics of plasma electrolytic oxide coating on magnesium-hydroxyapatite composites

Nadira Ghina Azzahra; Januar Widakdo; Toto Sudiro; Wei Song Hung; Anawati Anawati

doi:10.1016/j.matlet.2023.135601

Characteristics of plasma electrolytic oxide coating on magnesium-hydroxyapatite composites

Nadira Ghina Azzahra, Januar Widakdo, Toto Sudiro, Wei Song Hung, Anawati Anawati

Department of Physics

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

1 Citation (Scopus)

Abstract

Plasma electrolytic oxidation (PEO) is a surface modification of metals to grow a ceramic-like oxide coating with remarkably enhanced corrosion resistance. This work studies the characteristics of the PEO coating formed on magnesium-hydroxyapatite (Mg-HA) composites with HA concentrations of 0, 10, 20, and 30 wt% prepared by spark plasma sintering (SPS). Thin PEO coatings of 1–3 μm were successfully formed on all specimens in 0.5 M Na₃PO₄ electrolyte for 5 min. The plasma became finer, reducing the pore size and thickness, with increasing HA concentration. Agglomeration of HA particles in Mg-20HA and Mg-30HA inhibited coating coverage. EDS and XRD analyses confirmed the similar composition of Mg₃(PO₄)₂ in all the coatings. The coating improved surface wettability and showed high apatite-forming ability in simulated body fluid. The optimum coating performance was obtained for Mg-10HA.

Original language	English
Article number	135601
Journal	Materials Letters
Volume	356
DOIs	https://doi.org/10.1016/j.matlet.2023.135601
Publication status	Published - 1 Feb 2024

Keywords

Composite
Hydroxyapatite
Morphology
PEO
SPS

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10.1016/j.matlet.2023.135601

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title = "Characteristics of plasma electrolytic oxide coating on magnesium-hydroxyapatite composites",

abstract = "Plasma electrolytic oxidation (PEO) is a surface modification of metals to grow a ceramic-like oxide coating with remarkably enhanced corrosion resistance. This work studies the characteristics of the PEO coating formed on magnesium-hydroxyapatite (Mg-HA) composites with HA concentrations of 0, 10, 20, and 30 wt% prepared by spark plasma sintering (SPS). Thin PEO coatings of 1–3 μm were successfully formed on all specimens in 0.5 M Na3PO4 electrolyte for 5 min. The plasma became finer, reducing the pore size and thickness, with increasing HA concentration. Agglomeration of HA particles in Mg-20HA and Mg-30HA inhibited coating coverage. EDS and XRD analyses confirmed the similar composition of Mg3(PO4)2 in all the coatings. The coating improved surface wettability and showed high apatite-forming ability in simulated body fluid. The optimum coating performance was obtained for Mg-10HA.",

keywords = "Composite, Hydroxyapatite, Morphology, PEO, SPS",

author = "Azzahra, {Nadira Ghina} and Januar Widakdo and Toto Sudiro and Hung, {Wei Song} and Anawati Anawati",

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AU - Azzahra, Nadira Ghina

AU - Widakdo, Januar

AU - Sudiro, Toto

AU - Hung, Wei Song

AU - Anawati, Anawati

PY - 2024/2/1

Y1 - 2024/2/1

N2 - Plasma electrolytic oxidation (PEO) is a surface modification of metals to grow a ceramic-like oxide coating with remarkably enhanced corrosion resistance. This work studies the characteristics of the PEO coating formed on magnesium-hydroxyapatite (Mg-HA) composites with HA concentrations of 0, 10, 20, and 30 wt% prepared by spark plasma sintering (SPS). Thin PEO coatings of 1–3 μm were successfully formed on all specimens in 0.5 M Na3PO4 electrolyte for 5 min. The plasma became finer, reducing the pore size and thickness, with increasing HA concentration. Agglomeration of HA particles in Mg-20HA and Mg-30HA inhibited coating coverage. EDS and XRD analyses confirmed the similar composition of Mg3(PO4)2 in all the coatings. The coating improved surface wettability and showed high apatite-forming ability in simulated body fluid. The optimum coating performance was obtained for Mg-10HA.

AB - Plasma electrolytic oxidation (PEO) is a surface modification of metals to grow a ceramic-like oxide coating with remarkably enhanced corrosion resistance. This work studies the characteristics of the PEO coating formed on magnesium-hydroxyapatite (Mg-HA) composites with HA concentrations of 0, 10, 20, and 30 wt% prepared by spark plasma sintering (SPS). Thin PEO coatings of 1–3 μm were successfully formed on all specimens in 0.5 M Na3PO4 electrolyte for 5 min. The plasma became finer, reducing the pore size and thickness, with increasing HA concentration. Agglomeration of HA particles in Mg-20HA and Mg-30HA inhibited coating coverage. EDS and XRD analyses confirmed the similar composition of Mg3(PO4)2 in all the coatings. The coating improved surface wettability and showed high apatite-forming ability in simulated body fluid. The optimum coating performance was obtained for Mg-10HA.

KW - Composite

KW - Hydroxyapatite

KW - Morphology

KW - PEO

KW - SPS

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DO - 10.1016/j.matlet.2023.135601

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SN - 0167-577X

VL - 356

JO - Materials Letters

JF - Materials Letters

M1 - 135601

ER -

Characteristics of plasma electrolytic oxide coating on magnesium-hydroxyapatite composites

Abstract

Keywords

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