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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| Format: | Article |
| Language: | English English |
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Elsevier Ltd
2017
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| Online Access: | 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 |
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| 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 |
| building | UMP Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T02:11:38Z |
| format | Article |
| id | ump-18042 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T02:11:38Z |
| publishDate | 2017 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| 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. (Published) https://doi.org/10.1016/j.proeng.2017.04.110 DOI: 10.1016/j.proeng.2017.04.110 |
| 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 |
| title | 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_short | 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 |
| topic | TJ Mechanical engineering and machinery |
| 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 |