Adhesion, tribological and corrosion properties of cold-sprayed CoCrMo and Ti6Al4V coatings on 6061-T651 Al alloy
Adhesion, tribological and corrosion properties of cold-sprayed CoCrMo and Ti6Al4V coatings on 6061-T651 Al alloy
In this study, CoCrMo and Ti6Al4V coatings were deposited on 6061-T651 aluminum alloy substrates via a high pressure cold spray process. Adhesion, tribological and corrosion properties of the CoCrMo and Ti6Al4V coatings were systematically investigated. The CoCrMo and Ti6Al4V coatings had good quality with low porosity levels and high hardnesses. X-ray diffraction patterns showed that there were no phase change and oxidation for the CoCrMo and Ti6Al4V coatings with reference to the CoCrMo and Ti6Al4V powder feedstocks. The shear bonding tests indicated good adhesion quality between the coatings and substrates. The tribological results showed that the CoCrMo coatings significantly enhanced the wear resistance of the Al alloy substrates. The corrosion results showed that the CoCrMo and Ti6Al4V coatings had higher anti-corrosion performances compared to the bare Al alloy substrates in a 3.5 wt% NaCl solution as the corrosion current densities for the CoCrMo and Ti6Al4V coated samples were substantially reduced.
Adhesion, CoCrMo coating, Cold spray, Corrosion, Ti6Al4V coating, Wear
291-298
Sun, Wen
38403bb0-2b99-4958-b9ee-39b4016d0968
Tan, Adrian Wei Yee
3d644676-a520-4f41-b7f1-410d1c46689d
Marinescu, Iulian
eb6fb154-1605-451d-a446-f3148bb0da0b
Toh, Wei Quan
5098b116-617e-4650-a2eb-2fbdfbf371ea
Liu, Erjia
f0eb8f01-7079-4d8a-9687-f00250b31ffd
15 October 2017
Sun, Wen
38403bb0-2b99-4958-b9ee-39b4016d0968
Tan, Adrian Wei Yee
3d644676-a520-4f41-b7f1-410d1c46689d
Marinescu, Iulian
eb6fb154-1605-451d-a446-f3148bb0da0b
Toh, Wei Quan
5098b116-617e-4650-a2eb-2fbdfbf371ea
Liu, Erjia
f0eb8f01-7079-4d8a-9687-f00250b31ffd
Sun, Wen, Tan, Adrian Wei Yee, Marinescu, Iulian, Toh, Wei Quan and Liu, Erjia
(2017)
Adhesion, tribological and corrosion properties of cold-sprayed CoCrMo and Ti6Al4V coatings on 6061-T651 Al alloy.
Surface and Coatings Technology, 326 (10), .
(doi:10.1016/j.surfcoat.2017.07.062).
Abstract
In this study, CoCrMo and Ti6Al4V coatings were deposited on 6061-T651 aluminum alloy substrates via a high pressure cold spray process. Adhesion, tribological and corrosion properties of the CoCrMo and Ti6Al4V coatings were systematically investigated. The CoCrMo and Ti6Al4V coatings had good quality with low porosity levels and high hardnesses. X-ray diffraction patterns showed that there were no phase change and oxidation for the CoCrMo and Ti6Al4V coatings with reference to the CoCrMo and Ti6Al4V powder feedstocks. The shear bonding tests indicated good adhesion quality between the coatings and substrates. The tribological results showed that the CoCrMo coatings significantly enhanced the wear resistance of the Al alloy substrates. The corrosion results showed that the CoCrMo and Ti6Al4V coatings had higher anti-corrosion performances compared to the bare Al alloy substrates in a 3.5 wt% NaCl solution as the corrosion current densities for the CoCrMo and Ti6Al4V coated samples were substantially reduced.
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More information
Accepted/In Press date: 27 July 2017
Published date: 15 October 2017
Additional Information:
Funding Information:
This work was financially supported by the National Research Foundation (NRF), Rolls-Royce (RR), and Nanyang Technological University (NTU), Singapore, with the research grant number of NRF-RR-NTU M-RT3.1 Repair Technologies: Metal Cold Spray. Wen Sun was grateful for the PhD scholarship from the Rolls-Royce@NTU Corporate Lab and the Nanyang Technological University, Singapore. Authors also thanked Anna Tai and Nicholas Weeks for their contributions to this work.
Publisher Copyright:
© 2017 Elsevier B.V.
Keywords:
Adhesion, CoCrMo coating, Cold spray, Corrosion, Ti6Al4V coating, Wear
Identifiers
Local EPrints ID: 475780
URI: http://eprints.soton.ac.uk/id/eprint/475780
ISSN: 0257-8972
PURE UUID: 8af34980-95df-4c24-bf13-0a57756177ed
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Date deposited: 28 Mar 2023 16:44
Last modified: 17 Mar 2024 13:14
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Contributors
Author:
Wen Sun
Author:
Adrian Wei Yee Tan
Author:
Iulian Marinescu
Author:
Wei Quan Toh
Author:
Erjia Liu
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