Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 10    No. 4    August 2000

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Laser surface coating of RE bioceramic layer on TC4①
GAO Jia-cheng(高家诚), ZHANG Ya-ping(张亚平),
WEN Jing(文 静), WANG Yong(王 勇)

College of Materials Science and Engineering, Chongqing University, Chongqing 400044, P.R.China

Abstract:A layer of premixed CaHPO4·2H2O-CaCO3-Y2O3powders stuck on pretreated surface of Ti-6Al-4V alloy substrate was successfully transformed into a composite of 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 of implantation experiments show that the microstructure of the coating material is static, the bonding properties between coating and substrate are better. The bioceramic coating had not 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.


Key words: laser cladding; bioceramic coating; biocompatibility; rare earth

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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