钽涂层多孔钛合金支架的制备与表征

稀有金属材料与工程, 2012, 41(11): 2049-2053.

钽涂层多孔钛合金支架的制备与表征

李祥 ^1, , 于晓明 ^2, , 王成焘 ^3, , 谭丽丽 ^4, , 杨柯 ^5, , 罗云 ^6, , 张文光 ^7,

1.上海交通大学机械系统与振动国家重点实验室,上海200240

2.中国科学院金属研究所,辽宁沈阳110016

3.上海交通大学机械系统与振动国家重点实验室,上海200240

4.中国科学院金属研究所,辽宁沈阳110016

5.中国科学院金属研究所,辽宁沈阳110016

6.上海交通大学机械系统与振动国家重点实验室,上海200240

7.上海交通大学机械系统与振动国家重点实验室,上海200240

基金项目: 机械系统与振动国家重点实验室课题(MSV201114) 高等学校博士点基金(20100073120051)

关键词：电子束熔化成形 , 支架 , 钽涂层 , 钛合金

Preparation and Characterization of Porous Titanium Alloy Scaffold Coated with Tantalum

钽金属是一种理想的医用金属材料,能够与人体软/硬组织发生整合.利用化学气相沉积方法,在可控多孔结构的Ti6Al4V合金支架表面沉积涂覆钽金属涂层,使其同时具备理想的三维孔隙结构和力学相容性,以及钽金属优异的生物学性能.研究结果显示,多孔钛合金支架表面涂层前后色泽发生明显变化,涂层后支架呈现钽金属色泽.扫描电镜和XRD分析进一步证明了多孔钛合金支架表面沉积物为钽金属.与美国Zimmer公司生产的多孔钽小梁金属相比,钽涂层多孔钛合金支架具备与人体皮质骨更相似的弹性模量和抗压强度,是一种理想的骨修复替代物.

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