|The tribocorrosion behavior of Ni-P and Ni-P-ZrO2 coatings|
TABATABAEI, F., VARDAK, S., ALIREZAEI, S., RAEISSI, K.
vol. 56 (2018), no. 6, pp. 379 - 387
In this research, tribocorrosion behavior of Ni-P-ZrO2 electroless composite coating has been investigated in 3.5 wt.% NaCl solution. The steel samples were deposited by electroless deposition to form Ni-P and Ni-P-ZrO2 coatings. XRD and SEM were used to evaluate the microstructure of the coatings. Also, the corrosion and tribocorrosion behavior of the coatings have been investigated in 5 wt.% NaCl electrolytes. The results showed that the repassivation rate of Ni-P-ZrO2 composite coating was higher than the mechanical depassivation rate. Also, the corrosion resistance of the Ni-P coating was lower than that of Ni-P-ZrO2 composite coating after tribocorrosion. Moreover, the synergistic effects of corrosion and wear at an anodic potential (–100 mVAg/AgCl) indicated that corrosion had more contribution to the weight loss in Ni-P coating rather than that of Ni-P-ZrO2 coating.
tribocorrosion, electroless, composite, zirconia, coating
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