| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Production and Mechanical Behaviour of Biomedical CoCrMo Alloy |
| O. Sahin1**, A. Rıza Tuncdemir2, H. Ali Cetinkara1, H. Salih Guder1, E. Sahin1
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1Department of Physics, Art and Science Faculty, Micro/Nanomechanic Characterization Laboratory, Mustafa Kemal University, Hatay, Turkey
2Department of Prosthetic Dentistry, Dentistry Faculty, Mustafa Kemal University, Hatay, Turkey |
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| Cite this article: |
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O. Sahin, A. R�, za Tuncdemir et al 2011 Chin. Phys. Lett. 28 126201 |
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Abstract Cobalt-based alloy (Co-30Cr-5.5Mo) is produced by the investment casting process. This alloy complies with the ASTM F75 standard and is widely used in the manufacturing of orthopedic implants because of its high strength, good corrosion resistance and excellent biocompatibility properties. SEM, XRD and microhardness tests are used to examine the mechanical properties of the material. The examined material exhibits the behaviour of indentation size effect (ISE). Our results reveal that Vickers and Knoop microhardness are dependent on indentation test load. The traditional Meyer's law, the proportional specimen resistance (PSR) model and the Hays-Kendall model (HK) are used to analyze the load dependence of the hardness. As a result, the Hays-Kendall model is found to be the most effective to determine the load-independent hardness HLI of CoCrMo alloy.
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| Keywords:
62.20.-x
61.66.Dk
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Received: 11 May 2011
Published: 29 November 2011
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