Effects of carbon content on the high temperature friction and wear of chromium carbonitride coatings
Effects of carbon content on the high temperature friction and wear of chromium carbonitride coatings
Chromium nitride-based coatings are often used in application at high temperature. They possess high wear and oxidation resistance; however, the friction coefficient is typically very high. Therefore, we doped CrN coatings by carbon with the aim to improve tribological properties at elevated temperature, particularly to lower the friction. CrCN coatings were prepared by cathode arc evaporation technology using constant N2 flow and variable C2H2 flow. The coatings with a thickness of 3–4 ?m were deposited on hardened steel substrates and high-temperature resistant alloy. The carbon content varied from 0 at.% (i.e. CrN) up to 31 at.%. The standard coating characterization included the nano-hardness, adhesion, chemical composition and structure (including hot X-ray diffraction). Wear testing was done using a high temperature tribometer (pin-on-disc); the maximum testing temperature was 700 °C. The coatings with carbon content 12–31 at.% showed almost identical tribological behaviour up to 700 °C.
chromium nitride, carbonitride coatings, tribology, elevated temperature
1228-1233
Polcar, T.
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
Vitu, T.
49ae56d2-cce3-44eb-95e6-728a76c423d1
Cvrcek, L.
9eda3410-c82d-4aea-b614-356b6cfdbca3
Vyskocil, J.
59216daa-9388-4a29-8546-bb7d023824d8
Cavaleiro, A.
114e42eb-7255-47ef-834d-0546d56d3171
July 2010
Polcar, T.
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
Vitu, T.
49ae56d2-cce3-44eb-95e6-728a76c423d1
Cvrcek, L.
9eda3410-c82d-4aea-b614-356b6cfdbca3
Vyskocil, J.
59216daa-9388-4a29-8546-bb7d023824d8
Cavaleiro, A.
114e42eb-7255-47ef-834d-0546d56d3171
Polcar, T., Vitu, T., Cvrcek, L., Vyskocil, J. and Cavaleiro, A.
(2010)
Effects of carbon content on the high temperature friction and wear of chromium carbonitride coatings.
[in special issue: 2nd International Symposium on TriboCorrosion]
Tribology International, 43 (7), .
(doi:10.1016/j.triboint.2009.12.010).
Abstract
Chromium nitride-based coatings are often used in application at high temperature. They possess high wear and oxidation resistance; however, the friction coefficient is typically very high. Therefore, we doped CrN coatings by carbon with the aim to improve tribological properties at elevated temperature, particularly to lower the friction. CrCN coatings were prepared by cathode arc evaporation technology using constant N2 flow and variable C2H2 flow. The coatings with a thickness of 3–4 ?m were deposited on hardened steel substrates and high-temperature resistant alloy. The carbon content varied from 0 at.% (i.e. CrN) up to 31 at.%. The standard coating characterization included the nano-hardness, adhesion, chemical composition and structure (including hot X-ray diffraction). Wear testing was done using a high temperature tribometer (pin-on-disc); the maximum testing temperature was 700 °C. The coatings with carbon content 12–31 at.% showed almost identical tribological behaviour up to 700 °C.
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e-pub ahead of print date: December 2009
Published date: July 2010
Keywords:
chromium nitride, carbonitride coatings, tribology, elevated temperature
Organisations:
nCATS Group
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Local EPrints ID: 199825
URI: http://eprints.soton.ac.uk/id/eprint/199825
ISSN: 0301-679X
PURE UUID: 72fb9337-0c50-4d7d-a234-c63cead81b53
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Date deposited: 20 Oct 2011 16:10
Last modified: 15 Mar 2024 03:40
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Author:
T. Vitu
Author:
L. Cvrcek
Author:
J. Vyskocil
Author:
A. Cavaleiro
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