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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

O - Ostatní výsledky

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/TE01020390" target="_blank" >TE01020390: Centrum vývoje moderních kovových biomateriálů pro lékařské implantáty</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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