In situ structural evolution of arc-deposited Cr-based coatings
In situ structural evolution of arc-deposited Cr-based coatings
Cr-based coatings were prepared by cathode arc-evaporation technology using N2 and C2H2 as reactive gases. Three compositions were investigated, Cr60N40, Cr41N27C32 and Cr67C33.
The present investigation is centred on the structural stability via coatings tempering up to 1000 °C, by in situ X-ray diffraction in protective atmosphere. As-deposited coatings present low order structure with a medium feature size less then 10 nm. The hexagonal ?-Cr2N phase, characteristic of binary Cr60N40 coating, was stable up to 900 °C, before recrystallization and grain growth takes place. For Cr41N27C32 film the phase transition varies from the metastable ?-Cr(N,C) to orthorhombic chromium carbonitride Cr3(CxN1 ? x)2 phase up to 800 °C and then to chromium carbide phase. No chromium nitride phases were detected in spite of the similar N and C contents after the deposition. The Cr–C coating recrystallizes into a mixture of carbide phases, mainly Cr3C2 and Cr23C6 after 1000 °C annealing treatment
arc evaporation, chromium nitride, carbonitride coatings, thermal stability, htxrd
5550-5555
Neves, A.M.
ead75d8a-b145-403b-aa63-e8ec4ed37ed4
Severo, V.
4cb8f5c9-87a3-4ba5-b645-a1d4fdec4ed1
Cvrcek, L.
9eda3410-c82d-4aea-b614-356b6cfdbca3
Polcar, T.
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
Louro, C.
49f509e9-4939-4864-84cc-b891aa8989c1
Cavaleiro, A.
114e42eb-7255-47ef-834d-0546d56d3171
August 2008
Neves, A.M.
ead75d8a-b145-403b-aa63-e8ec4ed37ed4
Severo, V.
4cb8f5c9-87a3-4ba5-b645-a1d4fdec4ed1
Cvrcek, L.
9eda3410-c82d-4aea-b614-356b6cfdbca3
Polcar, T.
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
Louro, C.
49f509e9-4939-4864-84cc-b891aa8989c1
Cavaleiro, A.
114e42eb-7255-47ef-834d-0546d56d3171
Neves, A.M., Severo, V., Cvrcek, L., Polcar, T., Louro, C. and Cavaleiro, A.
(2008)
In situ structural evolution of arc-deposited Cr-based coatings.
Surface and Coatings Technology, 202 (22-23), .
(doi:10.1016/j.surfcoat.2008.06.102).
Abstract
Cr-based coatings were prepared by cathode arc-evaporation technology using N2 and C2H2 as reactive gases. Three compositions were investigated, Cr60N40, Cr41N27C32 and Cr67C33.
The present investigation is centred on the structural stability via coatings tempering up to 1000 °C, by in situ X-ray diffraction in protective atmosphere. As-deposited coatings present low order structure with a medium feature size less then 10 nm. The hexagonal ?-Cr2N phase, characteristic of binary Cr60N40 coating, was stable up to 900 °C, before recrystallization and grain growth takes place. For Cr41N27C32 film the phase transition varies from the metastable ?-Cr(N,C) to orthorhombic chromium carbonitride Cr3(CxN1 ? x)2 phase up to 800 °C and then to chromium carbide phase. No chromium nitride phases were detected in spite of the similar N and C contents after the deposition. The Cr–C coating recrystallizes into a mixture of carbide phases, mainly Cr3C2 and Cr23C6 after 1000 °C annealing treatment
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Published date: August 2008
Keywords:
arc evaporation, chromium nitride, carbonitride coatings, thermal stability, htxrd
Organisations:
nCATS Group
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Local EPrints ID: 199797
URI: http://eprints.soton.ac.uk/id/eprint/199797
ISSN: 0257-8972
PURE UUID: 3699588d-cec0-4448-bf8a-8a2654e76c83
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Date deposited: 20 Oct 2011 14:10
Last modified: 15 Mar 2024 03:40
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Author:
A.M. Neves
Author:
V. Severo
Author:
L. Cvrcek
Author:
C. Louro
Author:
A. Cavaleiro
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