Bioactive hydroxyapatite/graphene composite coating and its corrosion stability in simulated body fluid

Ana Janković; Sanja Eraković; Miodrag Mitrić; Ivana Z. Matić; Zorica D. Juranić; Chi Pong Tsui; Chak Yin Tang; Vesna Mišković-Stanković; Kyong Yop Rhee; Soo Jin Park

doi:10.1016/j.jallcom.2014.11.078

Bioactive hydroxyapatite/graphene composite coating and its corrosion stability in simulated body fluid

Ana Janković, Sanja Eraković, Miodrag Mitrić, Ivana Z. Matić, Zorica D. Juranić, Chi Pong Tsui, Chak Yin Tang, Vesna Mišković-Stanković, Kyong Yop Rhee, Soo Jin Park

Research output: Journal article publication › Journal article › Academic research › peer-review

Abstract

The hydroxyapatite/graphene (HAP/Gr) composite was electrodeposited on Ti using the electrophoretic deposition process to obtain uniform bioactive coating with improved mechanical strength and favorable corrosion stability in simulated body fluid (SBF). Incorporation of Gr was verified by Raman spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray photoelectron analysis. The HAP/Gr composite coating exhibited reduced surface cracks, nearly double the hardness, and elastic modulus increased by almost 50% compared to pure HAP coating, as estimated by a nanoindentation test. The bioactive HAP/Gr composite coating provided a newly formed apatite layer in SBF with enhanced corrosion stability, as evidenced by electrochemical impedance spectroscopy. The thermal stability of the HAP/Gr coating was improved in comparison to the pure HAP coating, and the Ca/P ratio was closer to the stoichiometric value. No antibacterial activity against Staphylococcus aureus or Escherichia coli could be verified. The HAP/Gr composite coating was classified as non-cytotoxic when tested against healthy peripheral blood mononuclear cells (PBMC).

Original language	English
Pages (from-to)	148-157
Number of pages	10
Journal	Journal of Alloys and Compounds
Volume	624
DOIs	https://doi.org/10.1016/j.jallcom.2014.11.078
Publication status	Published - 5 Mar 2015

Keywords

Corrosion
Mechanical properties
Nano-structures
Surface analysis

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2014.11.078

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@article{5e596c0fa73340118e5c944ac377419a,

title = "Bioactive hydroxyapatite/graphene composite coating and its corrosion stability in simulated body fluid",

abstract = "The hydroxyapatite/graphene (HAP/Gr) composite was electrodeposited on Ti using the electrophoretic deposition process to obtain uniform bioactive coating with improved mechanical strength and favorable corrosion stability in simulated body fluid (SBF). Incorporation of Gr was verified by Raman spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray photoelectron analysis. The HAP/Gr composite coating exhibited reduced surface cracks, nearly double the hardness, and elastic modulus increased by almost 50% compared to pure HAP coating, as estimated by a nanoindentation test. The bioactive HAP/Gr composite coating provided a newly formed apatite layer in SBF with enhanced corrosion stability, as evidenced by electrochemical impedance spectroscopy. The thermal stability of the HAP/Gr coating was improved in comparison to the pure HAP coating, and the Ca/P ratio was closer to the stoichiometric value. No antibacterial activity against Staphylococcus aureus or Escherichia coli could be verified. The HAP/Gr composite coating was classified as non-cytotoxic when tested against healthy peripheral blood mononuclear cells (PBMC).",

keywords = "Corrosion, Mechanical properties, Nano-structures, Surface analysis",

author = "Ana Jankovi{\'c} and Sanja Erakovi{\'c} and Miodrag Mitri{\'c} and Mati{\'c}, {Ivana Z.} and Jurani{\'c}, {Zorica D.} and Tsui, {Chi Pong} and Tang, {Chak Yin} and Vesna Mi{\v s}kovi{\'c}-Stankovi{\'c} and Rhee, {Kyong Yop} and Park, {Soo Jin}",

year = "2015",

month = mar,

day = "5",

doi = "10.1016/j.jallcom.2014.11.078",

language = "English",

volume = "624",

pages = "148--157",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Bioactive hydroxyapatite/graphene composite coating and its corrosion stability in simulated body fluid

AU - Janković, Ana

AU - Eraković, Sanja

AU - Mitrić, Miodrag

AU - Matić, Ivana Z.

AU - Juranić, Zorica D.

AU - Tsui, Chi Pong

AU - Tang, Chak Yin

AU - Mišković-Stanković, Vesna

AU - Rhee, Kyong Yop

AU - Park, Soo Jin

PY - 2015/3/5

Y1 - 2015/3/5

N2 - The hydroxyapatite/graphene (HAP/Gr) composite was electrodeposited on Ti using the electrophoretic deposition process to obtain uniform bioactive coating with improved mechanical strength and favorable corrosion stability in simulated body fluid (SBF). Incorporation of Gr was verified by Raman spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray photoelectron analysis. The HAP/Gr composite coating exhibited reduced surface cracks, nearly double the hardness, and elastic modulus increased by almost 50% compared to pure HAP coating, as estimated by a nanoindentation test. The bioactive HAP/Gr composite coating provided a newly formed apatite layer in SBF with enhanced corrosion stability, as evidenced by electrochemical impedance spectroscopy. The thermal stability of the HAP/Gr coating was improved in comparison to the pure HAP coating, and the Ca/P ratio was closer to the stoichiometric value. No antibacterial activity against Staphylococcus aureus or Escherichia coli could be verified. The HAP/Gr composite coating was classified as non-cytotoxic when tested against healthy peripheral blood mononuclear cells (PBMC).

AB - The hydroxyapatite/graphene (HAP/Gr) composite was electrodeposited on Ti using the electrophoretic deposition process to obtain uniform bioactive coating with improved mechanical strength and favorable corrosion stability in simulated body fluid (SBF). Incorporation of Gr was verified by Raman spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray photoelectron analysis. The HAP/Gr composite coating exhibited reduced surface cracks, nearly double the hardness, and elastic modulus increased by almost 50% compared to pure HAP coating, as estimated by a nanoindentation test. The bioactive HAP/Gr composite coating provided a newly formed apatite layer in SBF with enhanced corrosion stability, as evidenced by electrochemical impedance spectroscopy. The thermal stability of the HAP/Gr coating was improved in comparison to the pure HAP coating, and the Ca/P ratio was closer to the stoichiometric value. No antibacterial activity against Staphylococcus aureus or Escherichia coli could be verified. The HAP/Gr composite coating was classified as non-cytotoxic when tested against healthy peripheral blood mononuclear cells (PBMC).

KW - Corrosion

KW - Mechanical properties

KW - Nano-structures

KW - Surface analysis

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U2 - 10.1016/j.jallcom.2014.11.078

DO - 10.1016/j.jallcom.2014.11.078

M3 - Journal article

SN - 0925-8388

VL - 624

SP - 148

EP - 157

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Bioactive hydroxyapatite/graphene composite coating and its corrosion stability in simulated body fluid

Abstract

Keywords

ASJC Scopus subject areas

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