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2094 |
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Arc spraying of WC-FeCrSiC cored wires
part 2: E-module measurement and simulation |
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Jan Nebel / Institute of Materials Engineering, Germany B. Svensen / , Benjamin Klusemann/ Institute of Mechanics, Germany Evelina Vogli/ Institute of Materials Engineering, Germany Wolfgang Tillmann/ Institute of Materials Engineering, Germany |
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The characterization of thermal sprayed coatings is often limited to microstructural analysis to evaluate the coatings morphology. Indentation is commonly used to determine the mechanical properties of different kind of engineering materials. However, due to the complex structure of thermal sprayed coatings few results have been obtained so far. This is the second in a series of two papers concerning the intrinsic mechanical properties of arc-sprayed WC-FeCrSiC coatings. In part 2 experimental nano-indentation tests and simulation results are compared. The experimental indentation tests show scattering in the force-deformation data due to the complex structure of the arc-sprayed coating which is investigated by means of an indentation test simulation. Based on these results the effective Young's modulus as well as further properties are identified. A general procedure is developed to predict the effective mechanical properties of different coating composites from microstructural images based on the properties of the single phases and their volume fractions after thermal spraying. |