Laser surface coating of RE bioceramic layer on TC4

A layer of premixed CaHPO4&middot2H2O-CaCO3-Y2O3 powders stuck on pretreated surface of Ti-6Al-4V alloy substrate was transformed into a composite of RE (rare earth) bioceramic coating by laser synthesizing and cladding only once. The microstructure and properties of the coating material were introduced. The titanium alloy with bioceramic coating on one side were implanted into the femur bone and thigh muscles of adult Mongrel dogs for testing its biocompatibility. The results show that the microstructure of the coating material is static, and the bonding properties between coating and substrate are better. The bioceramic coating has no toxicity-side effectiveness on the body and there is a better compatibility of osteoconducton. No effect of the coating material on the bio-activity of osteoblast and osteoclast was found.