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Structure and composition of silicon nitride and silicon carbon nitride coatings for joint replacements
Uppsala University, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Applied Optics . Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.
Uppsala University, Sweden.
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2013 (English)In: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 235, no 25, 827-834 p.Article in journal (Refereed) Published
Abstract [en]

SiNx and SiCxNy coatings were fabricated with high power impulse magnetron sputtering (HiPIMS). The coatings microstructure, growth pattern, surface morphology, composition, and bonding structure were investigated by AFM, SEM, GIXRD, TEM, EDS as well as XPS, and related to the deposition parameters target powers and substrate temperature. Cross-sections of SiCxNy coatings showed either dense and laminar, or columnar structures. These coatings varied in roughness (Ra between 0.2 and 3.8 nm) and contained up to 35 at.% C. All coatings were substoichiometric (with an N/Si ratio from 0.27 to 0.65) and contained incorporated particles (so called droplets). The SiNx coatings, in particular those deposited at the lower power on the silicon target, demonstrated a dense microstructure and low surface roughness (Ra between 0.2 and 0.3 nm). They were dominated by an (X-ray) amorphous structure and consisted mainly of Si–N bonds. The usefulness of these coatings is discussed for bearing surfaces for hip joint arthroplasty in order to prolong their life-time. The long-term aim is to obtain a coating that reduces wear and metal ion release, that is biocompatible, and with wear debris that can dissolve in vivo.

Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 235, no 25, 827-834 p.
Keyword [en]
Silicon nitride coating; Silicon carbon nitride coating; High power impulse magnetron sputtering (HIPIMS); Total joint replacements; Microstructure
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-103351DOI: 10.1016/j.surfcoat.2013.09.008ISI: 000329596100105OAI: oai:DiVA.org:liu-103351DiVA: diva2:688638
Available from: 2014-01-17 Created: 2014-01-17 Last updated: 2017-12-06Bibliographically approved

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Berlind, TorunSchmidt, SusannHultman, Lars
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