Development of wear resistant NFSS-HA novel biocomposites and study of their tribological properties for orthopaedic applications

Journal of the Mechanical Behavior of Biomedical Materials
M YounesiH Fooladfar

Abstract

Implants made of nickel free austenitic stainless steel can reduce the toxic effect of released nickel ion and compounds from the conventional stainless steels. On the other hand, hydroxyapatite is a ceramic which has been used in orthopaedic applications due to its good osteoconductivity, biocompatibility and bioactivity. However, there is no evidence in the literature up to now on producing composites based on nickel free stainless steel and hydroxyapatite and study of their tribology. The aim of this work was to produce novel biocomposites made up of nickel free stainless steel with hydroxyapatite (prepared by heat treating bone ash) and studying their tribology under various loads in air and in Ringer's physiological solution. Different amounts of hydroxyapatite powder (10, 20, 30 and 40% Vol.) were added to this nickel free stainless steel powder to get the biocomposites. Variation of their density, hardness, wear resistance and friction with the ceramic (hydroxyapatite) content and wear load were investigated in air and in Ringer's solution. The density of the composites was decreased by increasing the volume percentage of the hydroxyapatite, while wear resistance of the composites was increased. The wear mechanism of the...Continue Reading

Citations

Apr 24, 2012·Journal of the Mechanical Behavior of Biomedical Materials·Yuyong ChenDo Woo Kee
Mar 10, 2012·Journal of the Mechanical Behavior of Biomedical Materials·Vincent MathieuGuillaume Haiat
Oct 15, 2010·Journal of Biomedical Materials Research. Part a·Debrupa LahiriArvind Agarwal

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