In this paper

we demonstrate the microstructure modification in the surface layer and the improvement in corrosion resistance and microhardness for pure Ti samples treated by high current pulsed electron beam(HCPEB).With increasing number of pulses

the treated surfaces became relatively flatter.Multi-layer structure containing amorphous layer and nano-crystalline layer in the near surface of the treated pure Ti samples was also examined.Microhardness of the treated samples was increased from the initial 178 Hv to 292 Hv.According to the potentiodynamic polarization curves

the treated samples exhibited improved corrosion resistance in 5% NaCl solution compared with the virgin.Of all the samples

the 15-pulse treated sample is of the best corrosion resistance with the corrosion current increased from the initial –346.4 mV to –188.9 mV.The defects such as high dislocation density as well as the formation of amorphous and nano-crystalline layers induced by the HCPEB treatment were believed to be reasons for the improvements in corrosion resistance and microhardness.