Effect of jet electrodeposition conditions on microstructure and mechanical properties of Cu–Al2O3 composite coatings
Jet electrodeposition is an advanced manufacturing technology that can produce metallic nano-scaled microstructures with unique performance. Cu–Al2O3 composite coatings were prepared by jet electrodeposition from a plating bath with nano-Al2O3 particles suspended into the bath. Detailed microstructure changes upon the changes of experimental conditions were characterized using X-ray diffraction (XRD) and scanning electron microscope (SEM). The effect of the deposition conditions on the composite coating mechanical properties was investigated. Experimental results indicated that the Al2O3 particle adding into the electrolyte was able to refine the composite coating grains and enhance the deposit inner-structure as well as compactness, which considerably strengthens the composite coating’s mechanical property. It is proved that the current density in the range of 100~500 A/dm2 could offer grain refining effect and the addition of Al2O3 nanoparticles can effectively promote the composite coating mechanical properties.
KeywordsJet electrodeposition Composite coating Experimental conditions Microstructure Mechanical property
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This research was supported by The National Natural Science Foundation of China (51305178), Natural Science Foundation of Jiangsu provincial University (17KJD460005 and 17KJB460015), Jiangsu Natural Science Foundation (BK20181473), Foundation of Jiangsu Key Laboratory of Large Engineering Equipment Detection and Control (JSKLEDC201411), and Nantong 3D printing laboratory funding project (2018KFKT09/CP12016002).
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