Thermal-sprayed coatings on aluminium for mould tool protection and upgrade
Gibbons, Gregory John and Hansell, Robert George. (2008) Thermal-sprayed coatings on aluminium for mould tool protection and upgrade. Journal of Materials Processing Technology, Vol.204 (No.1-3). pp. 184-191. ISSN 0924-0136Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.jmatprotec.2007.11.032
The aim of the research outlined in this paper was to evaluate a range of thermal spray processes High Velocity Oxy Fuel (HVOF) and Atmospheric Plasma Spraying (APS) for the deposition of coatings for the protection and upgrade of aluminium injection mould tooling, particularly for the low-cost and flexible manufacture of automotive components. A rigourous evaluation of coating properties pertinent to the application, including as-sprayed surface finish, hardness, adhesion to substrate and microstructure, and the effect of the coating process on the fatigue properties of a range of typical aluminium alloys was made. The JP5000 (HVOF) system, on the whole, was found to offer the smoothest, hardest, best bonded coatings with the lowest porosity and most homogeneous microstructure, and has the potential to satisfy the requirements for an easily applied, cost effective hard coating, applicable to a range of aluminium alloys. The properties of coatings deposited via APS were not suitable for this application, as they were in general poorly adhered to the substrate, with poor microstructure. There was no correlation identified between the coating adhesion and the substrate material, and, furthermore, the processing by HVOF was not found to be detrimental to the fatigue life of the aluminium substrate. (c) 2007 Elsevier B.V. All rights reserved.
|Item Type:||Journal Article|
T Technology > TS Manufactures
T Technology > TA Engineering (General). Civil engineering (General)
|Divisions:||Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)|
|Library of Congress Subject Headings (LCSH):||Metal spraying, Coatings, Molding (Founding), Rapid tooling|
|Journal or Publication Title:||Journal of Materials Processing Technology|
|Official Date:||11 August 2008|
|Number of Pages:||8|
|Page Range:||pp. 184-191|
|Access rights to Published version:||Restricted or Subscription Access|
|Funder:||Engineering and Physical Sciences Research Council (EPSRC)|
Arai, T., Hallum, D.L., 1995. Coating greatly expands tool life. Am.
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