Search: onr:"swepub:oai:DiVA.org:uu-320778" >
Influence of Substr...
Influence of Substrate Heating and Nitrogen Flow on the Composition, Morphological and Mechanical Properties of SiNx Coatings Aimed for Joint Replacements
-
- Skjöldebrand, Charlotte (author)
- Uppsala universitet,Tillämpad materialvetenskap,Uppsala University, Sweden
-
- Schmidt, Susann (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten,Linkoping Univ, Thin Film Phys Div, Dept Phys Chem & Biol IFM, S-58183 Linkoping, Sweden.
-
- Vuong, Vicky (author)
- McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L7, Canada.,McMaster University, Canada
-
show more...
-
- Pettersson, Maria (author)
- Uppsala universitet,Tillämpad materialvetenskap,Uppsala University, Sweden
-
- Grandfield, Kathryn (author)
- McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L7, Canada.,McMaster University, Canada
-
- Högberg, Hans (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten,Linkoping Univ, Thin Film Phys Div, Dept Phys Chem & Biol IFM, S-58183 Linkoping, Sweden.
-
- Engqvist, Håkan, 1972- (author)
- Uppsala universitet,Tillämpad materialvetenskap,Uppsala University, Sweden
-
- Persson, Cecilia (author)
- Uppsala universitet,Tillämpad materialvetenskap,Uppsala University, Sweden
-
show less...
-
(creator_code:org_t)
- 2017-02-13
- 2017
- English.
-
In: Materials. - : MDPI AG. - 1996-1944. ; 10:2
- Related links:
-
https://uu.diva-port... (primary) (Raw object)
-
show more...
-
https://www.mdpi.com...
-
https://liu.diva-por... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.3...
-
https://urn.kb.se/re...
-
show less...
Abstract
Subject headings
Close
- Silicon nitride (SiNx) coatings are promising for joint replacement applications due to their high wear resistance and biocompatibility. For such coatings, a higher nitrogen content, obtained through an increased nitrogen gas supply, has been found to be beneficial in terms of a decreased dissolution rate of the coatings. The substrate temperature has also been found to affect the composition as well as the microstructure of similar coatings. The aim of this study was to investigate the effect of the substrate temperature and nitrogen flow on the coating composition, microstructure and mechanical properties. SiNx coatings were deposited onto CoCrMo discs using reactive high power impulse magnetron sputtering. During deposition, the substrate temperatures were set to 200 degrees C, 350 degrees C or 430 degrees C, with nitrogen-to-argon flow ratios of 0.06, 0.17 or 0.30. Scanning and transmission electron spectroscopy revealed that the coatings were homogenous and amorphous. The coatings displayed a nitrogen content of 23-48 at.% (X-ray photoelectron spectroscopy). The surface roughness was similar to uncoated CoCrMo (p = 0.25) (vertical scanning interferometry). The hardness and Young's modulus, as determined from nanoindentation, scaled with the nitrogen content of the coatings, with the hardness ranging from 12 +/- 1 GPa to 26 +/- 2 GPa and the Young's moduli ranging from 173 +/- 8 GPa to 293 +/- 18 GPa, when the nitrogen content increased from 23% to 48%. The low surface roughness and high nano-hardness are promising for applications exposed to wear, such as joint implants.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- silicon nitride
- coating
- hip joint replacement
- X-ray photoelectron spectroscopy (XPS)
- nanoindentation
- hardness
- Young's modulus
- transmission electron microscopy (TEM)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
-
Materials
(Search for host publication in LIBRIS)
To the university's database