Surface Modification on CoCrMo Alloy to Improve the Adhesion Strength of Hydroxyapatite Coating

Surface Modification on CoCrMo Alloy to Improve the Adhesion Strength of Hydroxyapatite Coating

Surface modification is often required in order to improve the biological and tribological properties of metallic implants. In the present study, Co-Cr-Mo alloy was oxidized in atmospheric condition to create oxide interlayer (Cr2O3) prior to hydroxyapatite (HA) coating. The effect of oxide interlay...

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Main Authors: Mas Ayu, Hassan, Izman, Sudin, R., Daud, Krishnamurithy, G., A., Shah, Siti Haryani, Tomadi, Salwani, Mohd Salleh
Format: Article
Language:English
English
Published: Elsevier Ltd 2017
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://umpir.ump.edu.my/id/eprint/18042/
http://umpir.ump.edu.my/id/eprint/18042/
http://umpir.ump.edu.my/id/eprint/18042/
http://umpir.ump.edu.my/id/eprint/18042/1/Surface%20Modification%20on%20CoCrMo%20Alloy%20to%20Improve%20the%20Adhesion%20Strength%20of%20Hydroxyapatite%20Coating.pdf
http://umpir.ump.edu.my/id/eprint/18042/2/Surface%20Modification%20on%20CoCrMo%20Alloy%20to%20Improve%20the%20Adhesion%20Strength%20of%20Hydroxyapatite%20Coating%201.pdf
id ump-18042
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spelling ump-180422017-08-14T02:20:14Z http://umpir.ump.edu.my/id/eprint/18042/ Surface Modification on CoCrMo Alloy to Improve the Adhesion Strength of Hydroxyapatite Coating Mas Ayu, Hassan Izman, Sudin R., Daud Krishnamurithy, G. A., Shah Siti Haryani, Tomadi Salwani, Mohd Salleh TJ Mechanical engineering and machinery Surface modification is often required in order to improve the biological and tribological properties of metallic implants. In the present study, Co-Cr-Mo alloy was oxidized in atmospheric condition to create oxide interlayer (Cr2O3) prior to hydroxyapatite (HA) coating. The effect of oxide interlayer on the adhesion strength of HA coating on oxidized Co-Cr-Mo substrate was investigated. The surface of oxide interlayer was rough and contained abundant of pores, which helps in providing better mechanical interlocking to HA coating. Scanning electron microscopy and X-ray diffraction techniques were used to characterize the surface morphology of the HA coating whilst a Revetest scratch test was used to measure the adhesion strength of HA coating on oxidized substrates. The oxide interlayer on the substrate was able to prevent severe cracks while maintaining the porosity of the coated layer. Scratch test results showed that adhesion strength of the HA coating on substrates with interlayer was significantly higher than those without interlayer (1.40 N Vs 1.04 N; p<0.05). Increasing sintering temperature increases adhesion strength proportionally. These findings suggest that the porous oxide interlayer provides better anchorage whilst minimizing surface cracks of HA on Co-Cr-Mo substrates. Elsevier Ltd 2017 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/18042/1/Surface%20Modification%20on%20CoCrMo%20Alloy%20to%20Improve%20the%20Adhesion%20Strength%20of%20Hydroxyapatite%20Coating.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/18042/2/Surface%20Modification%20on%20CoCrMo%20Alloy%20to%20Improve%20the%20Adhesion%20Strength%20of%20Hydroxyapatite%20Coating%201.pdf Mas Ayu, Hassan and Izman, Sudin and R., Daud and Krishnamurithy, G. and A., Shah and Siti Haryani, Tomadi and Salwani, Mohd Salleh (2017) Surface Modification on CoCrMo Alloy to Improve the Adhesion Strength of Hydroxyapatite Coating. Procedia Engineering, 184. pp. 399-408. ISSN 1877-7058 https://doi.org/10.1016/j.proeng.2017.04.110 DOI: 10.1016/j.proeng.2017.04.110
repository_type Digital Repository
institution_category Local University
institution Universiti Malaysia Pahang
building UMP Institutional Repository
collection Online Access
language English
English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Mas Ayu, Hassan
Izman, Sudin
R., Daud
Krishnamurithy, G.
A., Shah
Siti Haryani, Tomadi
Salwani, Mohd Salleh
Surface Modification on CoCrMo Alloy to Improve the Adhesion Strength of Hydroxyapatite Coating
description Surface modification is often required in order to improve the biological and tribological properties of metallic implants. In the present study, Co-Cr-Mo alloy was oxidized in atmospheric condition to create oxide interlayer (Cr2O3) prior to hydroxyapatite (HA) coating. The effect of oxide interlayer on the adhesion strength of HA coating on oxidized Co-Cr-Mo substrate was investigated. The surface of oxide interlayer was rough and contained abundant of pores, which helps in providing better mechanical interlocking to HA coating. Scanning electron microscopy and X-ray diffraction techniques were used to characterize the surface morphology of the HA coating whilst a Revetest scratch test was used to measure the adhesion strength of HA coating on oxidized substrates. The oxide interlayer on the substrate was able to prevent severe cracks while maintaining the porosity of the coated layer. Scratch test results showed that adhesion strength of the HA coating on substrates with interlayer was significantly higher than those without interlayer (1.40 N Vs 1.04 N; p<0.05). Increasing sintering temperature increases adhesion strength proportionally. These findings suggest that the porous oxide interlayer provides better anchorage whilst minimizing surface cracks of HA on Co-Cr-Mo substrates.
format Article
author Mas Ayu, Hassan
Izman, Sudin
R., Daud
Krishnamurithy, G.
A., Shah
Siti Haryani, Tomadi
Salwani, Mohd Salleh
author_facet Mas Ayu, Hassan
Izman, Sudin
R., Daud
Krishnamurithy, G.
A., Shah
Siti Haryani, Tomadi
Salwani, Mohd Salleh
author_sort Mas Ayu, Hassan
title Surface Modification on CoCrMo Alloy to Improve the Adhesion Strength of Hydroxyapatite Coating
title_short Surface Modification on CoCrMo Alloy to Improve the Adhesion Strength of Hydroxyapatite Coating
title_full Surface Modification on CoCrMo Alloy to Improve the Adhesion Strength of Hydroxyapatite Coating
title_fullStr Surface Modification on CoCrMo Alloy to Improve the Adhesion Strength of Hydroxyapatite Coating
title_full_unstemmed Surface Modification on CoCrMo Alloy to Improve the Adhesion Strength of Hydroxyapatite Coating
title_sort surface modification on cocrmo alloy to improve the adhesion strength of hydroxyapatite coating
publisher Elsevier Ltd
publishDate 2017
url http://umpir.ump.edu.my/id/eprint/18042/
http://umpir.ump.edu.my/id/eprint/18042/
http://umpir.ump.edu.my/id/eprint/18042/
http://umpir.ump.edu.my/id/eprint/18042/1/Surface%20Modification%20on%20CoCrMo%20Alloy%20to%20Improve%20the%20Adhesion%20Strength%20of%20Hydroxyapatite%20Coating.pdf
http://umpir.ump.edu.my/id/eprint/18042/2/Surface%20Modification%20on%20CoCrMo%20Alloy%20to%20Improve%20the%20Adhesion%20Strength%20of%20Hydroxyapatite%20Coating%201.pdf
first_indexed 2023-09-18T22:25:18Z
last_indexed 2023-09-18T22:25:18Z
_version_ 1777415926484828160

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