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Numerical simulation of in-flight particle oxidation during thermal spraying

Numerical simulation of in-flight particle oxidation during thermal spraying
Numerical simulation of in-flight particle oxidation during thermal spraying
Metal powders are widely used for thermal spray coating to improve wear, corrosion and temperature resistance of products. The high thermal profiles endured for sprayed particles give rise to oxidation on the surface of metal powders. Metallic oxides are brittle and undermine the performance of coated products. To understand the growth of oxide layers on in-flight metal powders, an oxidation model is implemented into the Lagrangian formula of particle tracking. The numerical simulation is achieved for a 3D combusting gas flow generated by a high velocity oxygen fuel (HVOF) thermal spray gun. The results are able to demonstrate the correlation between in-flight particle oxidation and operation parameters.
CFD, numerical modelling, oxidation, thermal spray, HVOF
0098-1354
1661-1668
Zeoli, N.
bce8f101-8e08-4291-af2a-8ed2c2da7b5b
Gu, S.
a6f7af91-4731-46fe-ac4d-3081890ab704
Kamnis, S.
3ca869e0-8c18-4454-94f6-7fb4d2defa23
Zeoli, N.
bce8f101-8e08-4291-af2a-8ed2c2da7b5b
Gu, S.
a6f7af91-4731-46fe-ac4d-3081890ab704
Kamnis, S.
3ca869e0-8c18-4454-94f6-7fb4d2defa23

Zeoli, N., Gu, S. and Kamnis, S. (2008) Numerical simulation of in-flight particle oxidation during thermal spraying. Computers and Chemical Engineering, 32 (7), 1661-1668. (doi:10.1016/j.compchemeng.2007.08.008).

Record type: Article

Abstract

Metal powders are widely used for thermal spray coating to improve wear, corrosion and temperature resistance of products. The high thermal profiles endured for sprayed particles give rise to oxidation on the surface of metal powders. Metallic oxides are brittle and undermine the performance of coated products. To understand the growth of oxide layers on in-flight metal powders, an oxidation model is implemented into the Lagrangian formula of particle tracking. The numerical simulation is achieved for a 3D combusting gas flow generated by a high velocity oxygen fuel (HVOF) thermal spray gun. The results are able to demonstrate the correlation between in-flight particle oxidation and operation parameters.

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More information

Published date: 24 July 2008
Keywords: CFD, numerical modelling, oxidation, thermal spray, HVOF

Identifiers

Local EPrints ID: 54083
URI: http://eprints.soton.ac.uk/id/eprint/54083
ISSN: 0098-1354
PURE UUID: 02873a6c-3883-4604-94c5-de0dd65ca484

Catalogue record

Date deposited: 04 Aug 2008
Last modified: 15 Mar 2024 10:44

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Contributors

Author: N. Zeoli
Author: S. Gu
Author: S. Kamnis

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