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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Tantalum as a Buffer Layer in Diamond-Like Carbon Coated Artificial Hip Joints
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Tantalum as a Buffer Layer in Diamond-Like Carbon Coated Artificial Hip Joints

机译：钽作为类金刚石碳涂层人工髋关节的缓冲层

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摘要

The acid resistance of tantalum coated and uncoated human hip joint prostheses was studied with commercial CrCoMo acetabular cups. The samples were exposed to 10 percent HCl solution and the quantities of dissolved Cr, Co, and Mo were measured with proton-induced X-ray emission (PIXE). The absolute quantities were obtained with the use of Cr and Se solution standards. Tantalum coatings (thicknesses 4-6 mu m) were prepared in vacuum with magnetron sputtering. Tantalum coating decreased the corrosion rate by a factor of 10~6. As a spinoff from recent wear tests on artificial hip joints it was shown that tantalum has excellent mechanical properties as an intermediate layer of diamond-like carbon (DLC) coatings. When tantalum was tested together with DLC on three metal-on-metal hip joint pairs in a hip simulator, no observable defects occurred during 15 million walking cycles with a periodic 50-300-kg load (Paul curve).
机译：用商用CrCoMo髋臼杯研究了钽涂层和未涂层​​的人体髋关节假体的耐酸性。将样品暴露于10％的HCl溶液中，并通过质子诱导的X射线发射（PIXE）测量溶解的Cr，Co和Mo的量。绝对量是使用Cr和Se溶液标准液获得的。用磁控溅射在真空中制备钽涂层（厚度为4-6微米）。钽涂层使腐蚀速率降低了10〜6倍。从最近对人造髋关节的磨损测试中得出的结果表明，钽具有出色的机械性能，可作为类金刚石碳（DLC）涂层的中间层。当在髋部模拟器中的三个金属对金属髋关节对上对钽和DLC进行测试时，在周期性的50-300公斤负荷下（Paul曲线），在1500万次步行循环中没有观察到缺陷。

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