摘要
In order to improve the quality of the bio-active coating on medical grade CoNiCrMo substrate, hydroxyapatite(HA) coatings were produced via low-temperature dip-coating route on substrates treated using various surface pre-treating methods. The surface and cross-sectional morphologies of HA coatings were observed by SEM, as well as the bonding strength between coatings and substrates after different pre-treatments were characterized according to ASTM C633. The low-temperature HA dip-coating method with the substrate merely oxidized at 600℃ can provide a high quality HA coating for CoNiCrMo, of which the bonding strength reaches (58±5)MPa, higher than that of the clinically used HA coatings on Ti-alloys produced via plasma spray route, as well as a HA coating with full crystallinity and high phase-purity, which is more in-vivo stable than plasma sprayed HA coating.
In order to improve the quality of the bio-active coating on medical grade CoNiCrMo substrate, hydroxyapatite（HA） coatings were produced via low-temperature dip-coating route on substrates treated using various surface pre-treating methods. The surface and cross-sectional morphologies of HA coatings were observed by SEM, as well as the bonding strength between costings and substrates after different pre-treatments were characterized according to ASTM C633. The low-temperature HA dip-coating method with the substrae merely oxidized at 600℃ can provide a high quality HA coating for CoNiCrMo. of which the honding strength reaches （58±）MPa, bigher than that of the clinically used HA coatings on Ti-alloys produced via plasma spray route, as well as a HA coating with full crystallinity and high phase-purity, which is more in-vivo stable than plasma sprayed HA coating.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2005年第6期1303-1308,共6页
Transactions of Nonferrous Metals Society of China
