Improvement of Wear, Pitting Corrosion Resistance and Repassivation Ability of Mg-Based Alloys Using High Pressure Cold Sprayed (HPCS) Commercially Pure-Titanium Coatings

In this study, a compact cold sprayed (CS) Ti coating was deposited on Mg alloy using high pressure spray (HPCS) system. The wear and corrosion behavior of the CS compared with that Al bare alloy. yielded lower rate to Electrochemical impedance spectroscopy (EIS) cyclic potentiodynamic polarization (CPP) tests revealed can substantially reduce AZ31B in chloride containing solutions coating. Interestingly, Ti-coated demonstrated negative hysteresis loop, depicting repassivation pits, contrast Al-coated positive loops where potential (Ecorr) > (Erp); indicating irreversible growth pits. were most susceptible pitting corrosion, while indicated noticeable resistance 3.5 wt % NaCl solution. comparison coating, considerably separated AZ31BMg surface from corrosive electrolyte during long term immersion test for 11 days.