Effects of scanning speed on mechanical, wear property, and corrosion behavior of CP-Ti fabricated by the selective laser melting technique

In this work, CP-Ti was prepared by the selective laser melting (SLM) technique to systematically explore the effect of scanning speed on microstructure, mechanical, wear properties, and corrosion behavior. The optimum relative density of 99.87±0.12% was obtained by using the scanning speed of 800 mm/s, while its tensile strength, yield strength, elongation, and hardness were 543±17 MPa, 453±7 MPa, 14±1%, and 294±4 HV, respectively. Moreover, SLM-processed CP-Ti with the optimum relative density had the lowest value of wear rate (2.72×10-7 mm2/N) and excellent corrosion resistance. These results indicated that the CP-Ti with high relative density, strength and hardness, low wear rate, and excellent corrosion resistance could be fabricated by controlling the scanning speed, and further used for the biomedical implant applications well.