摘要
采用电泳沉积(EPD)方法在纯钛表面沉积羟基磷灰石(HA)-MgO-壳聚糖(CS)复合生物陶瓷涂层,复合涂层在700℃条件下进行烧结处理,通过傅立叶变换红外光谱(FTIR)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)表征了涂层的组成、结构和表面形态,同时进行涂层与基体的拉力测试。结果表明:当HA/MgO/CS质量比为1/1/1时,制备的HA/MgO多孔涂层与纯钛之间的粘合力约为30.2 MPa,多孔涂层的孔径在10μm^15μm之间,在1.5倍离子浓度的人体模拟体液中浸泡12天后多孔HA/MgO涂层表面完全覆盖一层类骨碳酸磷灰石晶体,说明多孔HA/MgO涂层具有良好的生物活性和生物相容性。
In order to improve the bioactivity and bonding strength of porous hydroxyapatite(HA) coating, electrophoretic deposition(EPD) has been developed for the fabrication of HA/MgO/CS composite coatings.The surface morphology, chemical composition and the bonding strength between the coating and substrate were characterized by Fourier transform infrared spectrometer(FT-IR), scanning electron microscopy(SEM), shear strength testing experiment, and the bio-affinity of the coating was determined by immersion in simulated body fluid(1.5 SBF).The results showed that the porous HA coating was obtained by sintering at 700℃, with pore diameter about 10μm^15μm and bonding strength up to 30.2 MPa.The coating surfaces covered totally by carbonate-apatite after immersion 1.5 SBF for 12 days.The porous HA/MgO composite coating exhibits a good bioactivity and high bonding strength between coating and substrate.
作者
张岚
ZHANG Lan(Department of Pharmacy,Xiamen Medical College,Xiamen 361023,Fujian,China)
出处
《合成材料老化与应用》
2020年第5期70-72,共3页
Synthetic Materials Aging and Application
关键词
TI
羟基磷灰石
电泳沉积
氧化镁
复合涂层
多孔
生物活性
titanium
hydroxyapatite
electrophoretic deposition
MgO
composite coating
porousity
bioactivity
