Validation of Methods to Measure the Hardness and Elastic Modulus of Cold-Sprayed Al-ZN Composite Coatings

The elastic modulus and hardness of a cold-sprayed Al-25Zn metal matrix composite were characterized with the aid of Knoop and Vickers microindentation tests, nanoindentation test, and resonance frequency (RF) analysis. The mechanical properties were compared with the predictions of object-oriented...

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Bibliographic Details
Published in:Journal of materials engineering and performance 2020-04, Vol.29 (4), p.2144-2152
Main Authors: Darabi, Amir, Azarmi, Fardad
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Engineering Design
Materials Science
Quality Control
Reliability
Safety and Risk
Tribology
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Summary:The elastic modulus and hardness of a cold-sprayed Al-25Zn metal matrix composite were characterized with the aid of Knoop and Vickers microindentation tests, nanoindentation test, and resonance frequency (RF) analysis. The mechanical properties were compared with the predictions of object-oriented image-based finite element (FE) analysis and related to the microstructural characteristics revealed by scanning electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDS). The cold-sprayed coating exhibited an isotropic behavior along transversal and longitudinal directions and the predicted elastic modulus closely matched the results from the nanoindentation test. The approach offers a solution to the challenging task to determine the elastic modulus of thin coatings.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-020-04769-y