Manufacturing Technology 2016, 16(5):1091-1095 | DOI: 10.21062/ujep/x.2016/a/1213-2489/MT/16/5/1091

Microstructure of New Cobalt Alloy for Medical Use

Kateřina Nová1, Pavel Novák1, Anna Knaislová1, Drahomír Dvorský1, Jiří Zýka2
1 University of Chemistry and Technology, Prague, Department of Metals and Corrosion Engineering, Technická 5, 166 28 Prague 6, Czech Republic
2 UJP PRAHA a.s., Nad Kamínkou1345, 156 10 Praha-Zbraslav, Czech Republic

The objective of this work was to investigate and evaluate the effect of the composition and production on microstructure and tribological properties of cobalt alloys. The referece material was Co-28Cr-6Mo alloy, which is successfully used in the medicine for many years. The excellent corrosion resistance is the advantage, as well as better wear resistance than is offered by titanium or stainless steel implants. Standard Co-Cr-Mo alloy and also Co-Cr-Mo alloy with Ti in an amount 5 wt. %, were prepared by casting and also mechanical alloying followed by "Spark Plasma Sintering" consolidation. The influence of production route as well as influence of alloying elements on the microstructure and tribological properties was observed. Based on the obtained results, the Co-Cr-Mo-Ti alloy produced by casting seems to be most suitable, because the addition of titanium has greatly improved the wear resistance.

Keywords: cobalt alloy, microstructure, biomaterial, type of production

Published: October 1, 2016  Show citation

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Nová K, Novák P, Knaislová A, Dvorský D, Zýka J. Microstructure of New Cobalt Alloy for Medical Use. Manufacturing Technology. 2016;16(5):1091-1095. doi: 10.21062/ujep/x.2016/a/1213-2489/MT/16/5/1091.
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