Journal
CORROSION SCIENCE
Volume 131, Issue -, Pages 252-263Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2017.11.028
Keywords
Alloy; Polarisation; EIS; Pitting corrosion
Funding
- National Natural Science Foundation of China [51405478]
- National Basic Research Program of China (973 Program) [2014CB643302]
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Dependence of the tribocorrosion behaviour of nickel-aluminium bronze (NAB) on load in artificial seawater was investigated. Results from electrochemical measurements revealed that, decreases in the corrosion potential and polarisation resistance were induced by increased load, implying an increased susceptibility to corrosion. Quantitative calculations indicated that the synergy of wear and corrosion was crucial, particularly for the corrosion-accelerated wear component, which combined with pure mechanical wear were the predominant cause of degradation of NAB. Moreover, selective alpha-phase corrosion behaviour was observed, with the boundaries of intermetallic kappa(III) and kappa(IV) precipitates corroded preferentially.
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