磁控溅射Zr-Ti薄膜的组织结构与血液相容性  

Microstructure and Blood Compatibility of Zr-Ti Film Deposited by Magnetron Sputtering

作　　者：余凤丹[1] 储成林[1] 吉宏林[1] 饶席[1] 张文艳[1] 董寅生[1] 郭超[1] 盛晓波[1] 林萍华[1] 朱剑豪[2] 

机构地区：[1]东南大学江苏省先进金属材料重点实验室,江苏南京211189 [2]香港城市大学

出　　处：《稀有金属材料与工程》2011年第3期483-486,共4页Rare Metal Materials and Engineering

基　　金：教育部新世纪优秀人才支持计划(NCET-06-0464);江苏省自然科学基金(BK2007515)

摘　　要：通过直流平衡磁控溅射法在NiTiSMA表面生成Zr-Ti膜,用SEM、XRD和XPS分析证实制备的Zr-Ti膜呈现晶带T型结构,组织保持了细小致密的纤维状特征,与基底结合良好,并且出现了少量生物惰性ZrO2和TiO2陶瓷相。通过测定溶血率研究血小板黏附行为,评估血液相容性。结果表明,与NiTi基底相比,Zr-Ti膜的溶血率更低,表面黏附的血小板数量减少,能够改善NiTiSMA基底的血液相容性。最后,对磁控溅射沉积Zr-Ti膜的成膜机理进行了探讨。Zr-Ti film was deposited on the surface of NiTi shape memory alloy（SMA） by balanced magnetron DC sputtering.The results of SEM,XRD and XPS indicate that the Zr-Ti film has the T-type crystal band structure with a fine and dense fibre character.The film has a good combination with NiTi substrate and a small amount of bioinert ZrO2 and TiO2 ceramics phases is found in the film.Blood compatibility was evaluated by hemolysis test and platelet adhesion test.The hemolysis of Zr-Ti film is less than that of NiTi SMA.And the number of platelets on the sample surface is also less than that of Zr-Ti film,which indicates the blood compatibility of NiTi SMA could be improved by the Zr-Ti film.Finally the depositing mechanism of the Zr-Ti film by magnetron sputtering was discussed.

关 键 词：磁控溅射 ZR-TI 膜 表面改性 

分 类 号：R318.08[医药卫生—生物医学工程]