Journal
TRIBOLOGY INTERNATIONAL
Volume 178, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2022.108014
Keywords
NiP-ZrO 2; Nanocomposite coating; Deposition technique; Erosion mechanism
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Three different deposition techniques were used to synthesize NiP-ZrO2 nanocomposite coatings, and their structural and mechanical properties were compared using various characterization methods. It was found that pulse-electrodeposition was the most suitable technique, and the erosion behavior and mechanisms were investigated under different conditions.
Three different deposition techniques were utilized to synthesize NiP-ZrO2 nanocomposite coatings. The struc-tural and mechanical merits for the as-prepared coatings were compared through XRD, XRF, SEM, AFM, microhardness, and nanoindentation analysis. The pulse-electrodeposition was the most suitable technique with a hardness value of 653HV25. The erosion behavior for the different NiP-ZrO2 coatings was investigated based on erosion duration, particles velocity, and impact angle. The results shows that the erosion rate decreases linearly with increasing angle of incidence and increases with increasing particle velocity. The erosion mechanism is mainly fracturing of splats and ploughing action at low particle velocity due to the ductility merits of the different coatings. In contrast, larger craters, radial cracks, and micro cuttings were observed at higher speeds.
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