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Influence of Carbon Concentrations in Reducing Co and Cr Ions Release in Cobalt Based Implant: A Preliminary Report

Rosdi, Daud and Mas Ayu, Hassan and S., Izman and Mohammed Rafiq, Abdul Kadir and A., Shah and Mohd Faiz, Mohd Yusoff and M. W., Shamsiah and T. M., Yong and T., Kamarul (2014) Influence of Carbon Concentrations in Reducing Co and Cr Ions Release in Cobalt Based Implant: A Preliminary Report. Advanced Materials Research, 845. pp. 462-466. ISSN 1662-8985

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Abstract

The releases of harmful ions from cobalt based alloy to host tissues have raised significant health concerns. Carbon contents in this alloy may influence ions release but has yet investigated. It is hypothesized that carbon contents in this alloy will help the formation of oxide layer during thermal oxidation process and hence reducing the release of Co/Cr ions after implantation. In this study, Co-Cr-Mo alloy with carbon concentrations of 0.03% and 0.24% were oxidized at 1050°C for 3 hours under atmospheric condition. The oxidized substrates were characterized under FESEM and subjected to circulating immersion test in simulated body fluid (SBF) for 21 days. Metal ions release was measured using inductively coupled plasma-mass spectrometry (ICP-MS) at day 0, 7, 14 and 21. Oxidized high carbon samples show denser and a more uniform oxide layer than samples with low carbon contents. It is found that compact oxide structure promotes less metal ions release during immersion.

Item Type: Article
Uncontrolled Keywords: Biomaterial, Co-Cr-Mo Alloy, Metal Ions Release, Thermal Oxidation, Tissue Engineering
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: yaa
Date Deposited: 19 Jun 2015 06:48
Last Modified: 31 Jan 2018 00:06
URI: http://umpir.ump.edu.my/id/eprint/5380
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