Title: Characterisation and modelling of erosion wear of powder composite materials and coatings

Authors: Priit Kulu, Renno Veinthal, Helmo Kaerdi

Addresses: Department of Materials Engineering, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia. ' Department of Materials Engineering, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia. ' Department of Mathematics, Estonian Public Service Academy, Kase 61, Tallinn 12012, Estonia

Abstract: In erosion wear of composite materials at solid particle impact against the surface, plastic deformation, brittle fracture or combined mechanisms are dominating, depending on the properties of target material surface. Soft metal-matrix of composite materials requires a model of plastic deformation and the ceramic hard phase needs both of the models: the plastic deformation and the brittle fracture model of wear. In this paper, an attempt is made to model the erosion wear of composite materials, to characterise them using indentation method and to correlate calculated erosion rates with experimental results and material parameters.

Keywords: erosion; wear modelling; plastic contact; brittle fracture; powder composites; thermal sprayed coatings; metal powders; powder metallurgy; plastic deformation.

DOI: 10.1504/IJMPT.2007.013088

International Journal of Materials and Product Technology, 2007 Vol.28 No.3/4, pp.425 - 447

Available online: 07 Apr 2007 *

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