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Modeling and simulation of the microstructural behaviour in thermal sprayed coatings
Author(s) -
Klusemann Benjamin,
Hortig Christian,
Svendsen Bob
Publication year - 2009
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200910184
Subject(s) - materials science , coating , homogenization (climate) , porosity , compaction , composite material , microstructure , thermal spraying , thermal , composite number , thermodynamics , biodiversity , ecology , physics , biology
The purpose of the current work is the investigation of the mechanical behavior of thermal sprayed coatings to predict the influence of the application of compaction on the coatings. Due to the porosity and the poor surface quality of thermal sprayed coatings, an additional process step is necessary to compact the coating and to increase the surface quality, though leading to a complex deformation behavior of the coating. In a first step the microstructural evolution is investigated. Due to the fact that the experimental determination of the mechanical properties of a coating is quite complicated and cost‐intensive, a general procedure is developed which generates the desired quantities for different coating composites from microstructural images which are compared to analytical mean‐field homogenization solutions for elastic material behavior. The discussed thermal sprayed coatings are multiphase systems consisting of a metal‐matrix composite with pores. (© 2009 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)