GALVANIC CORROSION BEHAVIOR BETWEEN COLD SPRAYED TI COATING AND 1Cr13 STAINLESS STEEL

Titanium coating had been deposited on 1Cr13 stainless steel substrate using cold spray technique.The microstructure features and phase composition of the coating were analyzed via Scanning Electron Microscopy (SEM) and X-ray diffraction(XRD).The change of galvanic corrosion current density versus time for 1Cr13 stainless steel was measured to study the galvanic corrosion behavior.In order to interpret the behavior,the self-corrosion potential of coating,stainless steel and Ti metal bulk and potentiodynamic polarization experiments were performed.It was indicated that the galvanic corrosion tendeney between the coating and the steel was elatively small.