The Influence of alloying elements on the mechanical properties of a cobalt base alloy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43903671" target="_blank" >RIV/60461373:22310/16:43903671 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The Influence of alloying elements on the mechanical properties of a cobalt base alloy

Original language description

This work was focused on studying the effect of alloying elements on mechanical and tribological properties of cobalt alloys. Co-Cr-Mo alloy have been successfully used for the production of orthopaedic implants, thanks to better wear resistance than was offered by titanium implants. However, with the development of scientific and technological processes, there is still ongoing effort to even more improve the wear resistance and other properties of cobalt based alloy. The aim of this research was to find a suitable alloying element, which would increase the wear resistance, while other characteristics remain unimpaired. When choosing such an element we have to keep in mind that it has to be non-toxic for a human body. Standard Co-Cr-Mo alloy and also Co-Cr-Mo alloy with different alloying elements, specifically Nb, Si, Ti in an amount 5 wt%, were prepared by mechanical alloying followed by compacting method "Spark Plasma Sintering". The influence of alloying elements on the microstructure, as well as mechanical and tribological properties were observed. Based on the obtained results, the Co-Cr-Mo-Nb alloy seems to be most suitable, because the addition of niobium has greatly improved the wear resistance. However, it is necessary to perform many other tests, especially tests of corrosion resistance and biocompatibility.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

JG - Metallurgy, metal materials

OECD FORD branch

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Project

<a href="/en/project/TE01020390" target="_blank" >TE01020390: Centre of the development of advanced metallic biomaterials for medical implants</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů