Abstract
High-velocity oxygen fuel (HVOF) spray process was employed to fabricate nickel-based alloy coatings composed of different chromium contents (NC-A, 7.15 wt%; NC-B, 16.98 wt%). Based on the results of the tribocorrosion test, a mechanical plowing effect can be observed on the coatings at low applied potential (< +100 mVSCE), and the wear behavior of coatings was aggravated by intensified corrosion effect when a higher potential (>+300 mVSCE) was applied. Through the quantitative analyses, we have concluded that the total weight loss (Wtotal) of the coatings increased significantly as a function of the growing potential loading, and the synergic effects between corrosion and wear played a vital role in the overall weight loss.
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