Study on Microstructure and Corrosion Resistance of ZrO2 Reinforced Ti Based Composite Materials
Ti based composites with different doping amount of ZrO2 ceramics were prepared using spark plasma sintering,and the microstructure and phase composition of the Ti based materials before and after the addition of ZrO2 particles were studied,and the influence of ZrO2 content on the hardness and electrochemical corrosion property of Ti based composite materials was tested and studied.The results indicate that the Ti based composite materials mainly consist of equiaxed primary α phase,β phase,secondary α phase and dispersed ZrO2 reinforcement phase.With the increase of ZrO2 content,the hardness of Ti based composite materials significantly increases from 282.26 HV of pure titanium to 484.32 HV of the composite with 5wt%ZrO2,and the corrosion potential of the composite materials shifts positively,and the corrosive current density decreases,and the corrosion resistance of the composite materials improves.Ti based composites with ZrO2 content of 5wt%exhibits superior mechanical properties and corrosion resistance.
Ti based composite materialsZrO2 ceramic reinforcement phasehardnesscorrosion resistance
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