Mechanical and tribological behavior of silicon nitride and silicon carbon nitride coatings for total joint replacements
2013 (English)In: Journal of The Mechanical Behavior of Biomedical Materials, ISSN 1751-6161, Vol. 25, 41-47 p.Article in journal (Refereed) Published
Total joint replacements currently have relatively high success rates at 10–15 years; however, increasing ageing and an active population places higher demands on the longevity of the implants. A wear resistant configuration with wear particles that resorb in vivo can potentially increase the lifetime of an implant. In this study, silicon nitride (SixNy) and silicon carbon nitride (SixCyNz) coatings were produced for this purpose using reactive high power impulse magnetron sputtering (HiPIMS). The coatings are intended for hard bearing surfaces on implants. Hardness and elastic modulus of the coatings were evaluated by nanoindentation, cohesive, and adhesive properties were assessed by micro-scratching and the tribological performance was investigated in a ball-on-disc setup run in a serum solution. The majority of the SixNy coatings showed a hardness close to that of sintered silicon nitride (∼18 GPa), and an elastic modulus close to that of cobalt chromium (∼200 GPa). Furthermore, all except one of the SixNy coatings offered a wear resistance similar to that of bulk silicon nitride and significantly higher than that of cobalt chromium. In contrast, the SixCyNz coatings did not show as high level of wear resistance.
Place, publisher, year, edition, pages
Elsevier , 2013. Vol. 25, 41-47 p.
Silicon nitride, Silicon carbon nitride, Coatings, Total joint replacements, Biotribology
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-95932DOI: 10.1016/j.jmbbm.2013.05.002ISI: 000321469300005OAI: oai:DiVA.org:liu-95932DiVA: diva2:641780
Funding Agencies|Swedish Foundation for Strategic Research (SSF)||VINNOVA||Swedish Institute||2013-08-192013-08-122016-08-31