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Correlation between...
Correlation between fracture characteristics and valence electron concentration of sputtered Hf-C-N based thin films
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- Glechner, T. (författare)
- TU Wien, Christian Doppler Lab Surface Engn High Performan, Vienna, Austria.
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- Lang, S. (författare)
- TU Wien, Christian Doppler Lab Surface Engn High Performan, Vienna, Austria.
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- Hahn, R. (författare)
- TU Wien, Christian Doppler Lab Surface Engn High Performan, Vienna, Austria.
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- Alfreider, M. (författare)
- Univ Leoben, Dept Mat Sci, Leoben, Austria.
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- Moraes, V (författare)
- TU Wien, Inst Mat Sci & Technol, A-1060 Vienna, Austria.
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- Primetzhofer, Daniel (författare)
- Uppsala universitet,Tillämpad kärnfysik
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- Ramm, J. (författare)
- Oerlikon Surface Solut AG, Oerlikon Balzers, FL-9496 Balzers, Liechtenstein.
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- Kolozsvari, S. (författare)
- Plansee Composite Mat GmbH, D-86983 Lechbruck, Germany.
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- Kiener, D. (författare)
- Univ Leoben, Dept Mat Sci, Leoben, Austria.
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- Riedl, H. (författare)
- TU Wien, Christian Doppler Lab Surface Engn High Performan, Vienna, Austria.;TU Wien, Inst Mat Sci & Technol, A-1060 Vienna, Austria.
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TU Wien, Christian Doppler Lab Surface Engn High Performan, Vienna, Austria Univ Leoben, Dept Mat Sci, Leoben, Austria. (creator_code:org_t)
- Elsevier BV, 2020
- 2020
- Engelska.
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Ingår i: Surface & Coatings Technology. - : Elsevier BV. - 0257-8972 .- 1879-3347. ; 399
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Hard protective coating materials based on transition metal nitrides and carbides typically suffer from limited fracture tolerance. To further tune these properties non-metal alloying - substituting C with N - has been proven favorable for magnetron sputtered Hf-C-N based thin films. A theoretically predicted increase in valence electron concentration (from 8.0 to 9.0 e/f.u. from Hf-C to Hf-N) through nitrogen alloying lead to an increase in fracture toughness (K-IC obtained during in-situ SEM cantilever bending) from 1.89 +/- 0.15 to 2.33 +/- 0.18 MPa.m(1/2) for Hf0.43C0.57 to Hf0.35C0.30N0.35, respectively. The hardness remains close to the super-hard regime with values of 37.8 +/- 2.1 to 39.9 +/- 2.7 GPa for these specific compositions. Already the addition of small amounts of nitrogen, while sputtering a ceramic Hf-C target, leads to a drastic increase of nitrogen on the non-metallic sublattice for fcc single phased structured HfC1-xNx films, where x = N/(C + N). The here obtained results also provide experimental proof for the correlation between fracture characteristics and valence electron concentration.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Hf-C-N
- Fracture resistance
- Non-metal alloying
- Valence electron concentration
- Thermal stability
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Glechner, T.
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Lang, S.
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Hahn, R.
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Alfreider, M.
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Moraes, V
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Primetzhofer, Da ...
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visa fler...
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Ramm, J.
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Kolozsvari, S.
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Kiener, D.
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Riedl, H.
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visa färre...
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