关键词: 等离子喷涂, 硅灰石涂层, 硅酸二钙涂层, 生物活性, 生物相容性

Abstract:

A novel bioact ive ceramic, wollastonite, was deposited onto T-i 6A-l 4V substrate using plasma spraying technology for improving its bioact ivity and biocompatibility. The process, structures and properties of plasma sprayed wollastonite coat ing were examined using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, infrared spectroscopy and etc. In order to upgrade the propert ies of wollastonite coating, the wollastonitePTiO₂ and wollastonitePZrO₂ composite coatings and dicalcium silicate coat ing are also prepared and examined. The results showed that wollastonite and its composite coatings with certain content of wollastonite possessed good bioactivity, biocompatibility as well as t ight bonding to T-i 6A-l 4V substrate, indicating they may be candidates for bone graft in human body.

Key words: plasma spraying, wollastonite coating, dicalcium silicate coating, bioactivity, biocompatibility