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Combustion synthesis of CoCrMo orthopedic implant alloys: microstructure and properties

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Materials Research Innovations

Abstract

Because of their excellent properties, such as corrosion resistance, fatigue strength and biocompatibility, cobalt-based alloys are widely used in total hip and knee replacements, dental devices and support structures for heart valves. In this work, CoCrMo alloys were synthesized using a novel method based on combustion synthesis (CS), an advanced technique to produce a wide variety of materials including alloys and near-net shape articles. This method possesses several advantages over conventional processes, such as low energy requirements, short processing times and simple equipment. The evaluated material properties included density and yield measurements, composition and microstructure analysis, hardness, friction and tensile tests. It was shown that microstructure of CS-material is finer and more uniform as compared to the conventional standard. It was also found that among various additives, Cr3C2 is the most effective one for increasing material hardness. In addition, synthesized CoCrMo alloys exhibited good friction and mechanical properties.

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Acknowledgements

The financial support by the 21st Century Research & Technology Fund, State of Indiana, is gratefully acknowledged. We also thank Dr. Ravi Shetty, Zimmer, Inc., Warsaw, IN for his interest in this work and assistance with materials characterization.

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Authors and Affiliations

  1. Department of Chemical and Biomolecular Engineering and Center for Molecularly Engineered Materials, University of Notre Dame, Notre Dame, Indiana 46556, USA

    Bingyun Li, Alexander Mukasyan & Arvind Varma

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  1. Bingyun Li
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  2. Alexander Mukasyan
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  3. Arvind Varma
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Correspondence to Arvind Varma.

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Li, B., Mukasyan, A. & Varma, A. Combustion synthesis of CoCrMo orthopedic implant alloys: microstructure and properties. Mat Res Innovat 7, 245–252 (2003). https://doi.org/10.1007/s10019-003-0260-4

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  • DOI: https://doi.org/10.1007/s10019-003-0260-4

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