In vitro bioactivity, tribological property, and antibacterial ability of Ca–Si-based coatings doped with cu particles in-situ fabricated by laser cladding
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The present study aimed to in-situ fabricate Ca–Si-based coatings doped with copper particles (Cu–CS coatings) to enhance in vitro bioactivity, tribological property, and antibacterial ability of Ti-6Al-4V alloy. The effects of copper addition on the multiple properties were evaluated. Our results showed that Ca2SiO4, CaTiO3, and Cu2O were in-situ fabricated after laser processing. The Cu–CS coatings exhibited an excellent wear resistance and enhanced wettability. Regarding the in vitro bioactivity, after soaking in simulated body fluid, Cu–CS coatings developed an apatite surface layer that was reduced in the coatings with higher weight percent Cu addition. The Cu–CS coatings enhanced the inhibitory action against E. coli strains, especially for the coating with a higher concentration of Cu in it. Hence, the synthesized Cu–CS coatings present excellent tribological properties, enhanced bioactivity, and antibacterial property, and, therefore, would be used to modify the surface properties of Ti-6Al-4V implants for bone tissue engineering applications.
The work described in this paper is financially supported by the Natural Science Foundation of Liaoning province (no. 201602264), the National Natural Science Foundation of China (no. 51525101), and Funding from Northeastern University, China (985 program, N141008001).
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