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| The corrosion phenomena are always give bad impact to any metal products including human implants. This is due to the corrosion impacts are harmful for hard tissues and soft tissues. There are many methods to prevent the process of corrosion on implant materials such as coating with bioceramic materials and modify the implant surface with surface modification techniques. However, until now there is still no gold standard to overcome this problem and it is remain in researching process. Thus, the aim of this research is to investigate the potential and economical surface modification method to reduce the corrosion effects on Cobalt-Chromium-Molybdenum (Co-Cr-Mo) based alloy when insert in human body. The thermal oxidation process was selected to treat Co-Cr-Mo surface substrate. Firstly, Co-Cr-Mo alloy was heated in muffle furnace at constant temperature of 850°C with different duration of heating such as 3 hours and 6 hours in order to analyze the formation of oxide layer. The corrosion behaviours of untreated sample and oxidized sample were investigated utilizing potentiodynamic polarization tests in simulated body fluids (SBF). The Vickers hardness after corrosion testing was measured in order to evaluate the effect of thermal oxidation in reducing corrosion rate. Based on the results obtained it is clearly showed that substrates undergone thermal oxidation with 6 hours duration time performed better than 3 hours duration, with the hardness value 832.2HV vs. 588HV respectively. Dense oxide layer and uniform thickness formed on the oxidized substrates able to help in reducing the corrosion effects on Co-Cr-Mo alloy without degraded its excellent mechanical properties. The microstructures of oxidized substrates before and after corrosion test were also analyzed using FESEM images for better observations. It was determined that corrosion resistance of Co-Cr-Mo substrate can be increased with oxide layer formed on the alloys using thermal oxidation process. |
| References |
1. Afolaranmi GA, Henderson C, and Grant MH (2011). Effect of chromium and cobalt ions on phase I and phase II enzymatic activities in vitro in freshly isolated rat hepatocytes. Toxicology in Vitro, 25(1): 125-130. https://doi.org/10.1016/j.tiv.2010.10.003 PMid:20946949
2. Asri RIM, Harun WSW, Hassan MA, Ghani SAC, and Buyong Z (2016). A review of hydroxyapatite-based coating techniques: Sol-gel and electrochemical depositions on biocompatible metals. Journal of the Mechanical Behavior of Biomedical Materials, 57: 95-108. https://doi.org/10.1016/j.jmbbm.2015.11.031 PMid:26707027
3. ASTM (1999). Cobalt-Base alloys for biomedical applications. STP1365. American Society for Testing and Materials, Pennsylvania, USA. Available online at: https://www.astm.org/DIGITAL_LIBRARY/STP/SOURCE_PAGES.OLD/STP1365_foreword.pdf
4. Bikramjit B and Mitjan K (2011). Overview: Bioceramics and biocomposites. In: Bikramjit B and Mitjan K (Eds.), Tribology of ceramics and composites: Materials science perspective: 211-232. John Wiley & Sons, Hoboken, USA.
5. Blau PJ, Brummett TM, and Pint BA (2009). Effects of prior surface damage on high-temperature oxidation of Fe-, Ni-, and Co-based alloys. Wear, 267(1): 380-386. https://doi.org/10.1016/j.wear.2008.12.082
6. Celik E, Ozdemir I, Avcic E, and Tsunekawa Y (2005). Corrosion behaviour of plasma sprayed coatings. Surface and Coatings Technology, 193(1): 297–302. https://doi.org/10.1016/j.surfcoat.2004.08.143
7. Dong H, Sun Y, and Bell T (1997). Enhanced corrosion resistance of duplex coatings. Surface and Coatings Technology, 90(1-2): 91–101. https://doi.org/10.1016/S0257-8972(96)03099-X
8. Geetha M, Durgalakshmi D, and Asokamani R (2010). Biomedical implants: Corrosion and its prevention-A review. Recent Patents on Corrosion Science, 2(1): 40-54. https://doi.org/10.2174/1877610801002010040
9. Giacchi JV, Morando CN, Fornaro O, and Palacio HA (2011). Microstructural characterization of as-cast biocompatible Co–Cr–Mo alloys. Materials Characterization, 62(1): 53-61.
https://doi.org/10.1016/j.matchar.2010.10.011
10. Guilemany JM, Espallargas N, Suegama PH, and Benedetti AV (2006). Comparative study of Cr3C2-NiCr coatings obtained by HVOF and hard chromium coatings. Corrosion Science, 48: 2998-3013. https://doi.org/10.1016/j.corsci.2005.10.016
11. Guocheng W and Hala Z (2010). Functional coatings or films for hard-tissue applications. Materials, 3(7): 3994-4050. https://doi.org/10.3390/ma3073994 PMCid:PMC5445792
12. Hanawa T (2004). Metal ion release from metal implants. Materials Science and Engineering, 24(6): 745-752. https://doi.org/10.1016/j.msec.2004.08.018
13. Hikmet A and Hakan S (2008). Corrosion behaviour of magnesium alloys coated with TiN by cathodic arc deposition in NaCl and Na2SO4 solutions. Materials Characterization, 59(3): 266–270. https://doi.org/10.1016/j.matchar.2007.01.004
14. Igual Mu-oz A and Mischler S (2011). Effect of the environment on wear ranking and corrosion of biomedical CoCrMo alloys. Journal of Materials Science: Materials in Medicine, 22(3): 437-450. https://doi.org/10.1007/s10856-010-4224-0 PMid:21221728
15. Izman S, Hassan MA, Kadir MRA, Abdullah MR, Anwar M, Shah A, and Daud R (2012). Effect of pretreatment process on thermal oxidation of biomedical grade cobalt based alloy. In Advanced Materials Research, 399: 1564-1567.
16. Mas Ayu H, Izman S, Daud R, Krishnamurithy G, Shah A, Tomadi SH, and Salwani MS (2017). Surface modification on CoCrMo alloy to improve adhesion strength of hydroxyapatite coating. Procedia Engineering, 184: 399-408. https://doi.org/10.1016/j.proeng.2017.04.110
17. Mas Ayu HM (2015). Effects of hydroxyapatite coating with oxide interlayer on bioactivity performances in CoCrMo alloy. Ph.D. Dissertation, University of Technology, Johor, Malaysia.
18. Mas Ayu HM, Izman S, Mohammed RAK, Rosdi D, Shah A, Mohd FMY, Shamsiah MW, Yong TM, and Kamarul T (2013). Influence of carbon concentrations in reducing Co and Cr ions release in cobalt based implant: A preliminary report. Advanced Materials Research, 845: 462-466. https://doi.org/10.4028/www.scientific.net/AMR.845.462
19. Mohd Faiz MY, Mohammed RAK, Nida I, Mas Ayu H, and Rafaqat H (2014). Dipcoating of poly (ε-caprolactone)/hydroxyapatite composite coating on Ti6Al4V for enhanced corrosion protection. Surface and Coatings Technology, 245: 102-107. https://doi.org/10.1016/j.surfcoat.2014.02.048
20. Paital SR and Dahotre NB (2009). Calcium phosphate coatings for bio-implant applications: Materials, performance factors, and methodologies. Materials Science and Engineering: R: Reports, 66(1): 1-70. https://doi.org/10.1016/j.mser.2009.05.001
21. Shirdar MR, Taheri MM, Moradifard H, Keyvanfar A, Shafaghat A, Shokuhfar T, and Izman S (2016). Hydroxyapatite–titania nanotube composite as a coating layer on Co–Cr-based implants: Mechanical and electrochemical optimization. Ceramics International, 42(6): 6942-6954. https://doi.org/10.1016/j.ceramint.2016.01.080
22. Tsaousi A, Jones E, and Case CP (2010). The in vitro genotoxicity of orthopaedic ceramic (Al2O3) and metal (CoCr alloy) particles. Mutation Research/Genetic Toxicology and Environmental Mutagenesis, 697(1): 1-9. https://doi.org/10.1016/j.mrgentox.2010.01.012 PMid:20139029
23. Wang T and Dorner-Reisel A (2004). Effect of substrate oxidation on improving the quality of hydroxyapatite coating on CoNiCrMo. Journal of Materials Science, 39(13): 4309-4312. https://doi.org/10.1023/B:JMSC.0000033414.87480.37
24. Wei X, Carl L, Cecilia P, Peter T, Jukka L, and Håkan E (2010). Changes of surface composition and morphology after incorporation of ions into biomimetic apatite coatings. Journal of Biomaterials and Nanobiotechnology, 1(1): 7-16. https://doi.org/10.4236/jbnb.2010.11002 |
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