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Improved adhesion o...
Improved adhesion of carbon nitride coatings on steel substrates using metal HiPIMS pretreatments
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- Bakoglidis, Konstantinos (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Schmidt, Susann (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Greczynski, Grzegorz (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Hultman, Lars (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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(creator_code:org_t)
- ELSEVIER SCIENCE SA, 2016
- 2016
- English.
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In: Surface & Coatings Technology. - : ELSEVIER SCIENCE SA. - 0257-8972 .- 1879-3347. ; 302, s. 454-462
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We investigate the effect of low-temperature metal pretreatments in order to improve the adhesion of CNx coatings on steel substrates, which is crucial for tribological applications. The substrate pretreatments were conducted using five different metal targets: Ti, Zr, Al, Cr, and W, operated in high power impulse magnetron sputtering mode, known to produce significant ionization of the sputtered material flux. The CNx adhesion, as assessed by Rockwell C tests, did not improve upon Ti and Zr pretreatments. This is primarily ascribed to the fact that no interlayer was formed owing to severe re-sputtering due to high fluxes of doubly-ionized metal species in the plasma. A slight improvement in adhesion was observed in the case an Al pretreatment was carried out, while the best results were obtained using Cr and W. Here, 30-s-long pretreatments were sufficient to clean the steel surface and form a metallic interlayer between substrate and coating. Transmission electron microscopy in combination with energy dispersive X-ray spectroscopy revealed that Al, Cr, and W created intermixing zones at the interlayer/substrate and the interlayer/CNx interfaces. The steel surfaces, pretreated using Cr or W, showed the highest work of adhesion with W-adh(Cr) = 1.77 J/m(2) and W-adh(W) = 1.66 J/m(2), respectively. (C) 2016 Elsevier B.V. All rights reserved.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- Adhesion; Steel substrate; Carbon nitride; Coating; HiPIMS; Pretreatment
Publication and Content Type
- ref (subject category)
- art (subject category)
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