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首页> 外文会议>STP 1471; Symposium on Titanium, Niobium, Zirconium, and Tantalum for Medical and Surgical Applications; 20051109-10; Washington,DC(US) >Metallurgical Attachment of a Porous Tantalum Foam to a Titanium Substrate for Orthopedic Applications
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Metallurgical Attachment of a Porous Tantalum Foam to a Titanium Substrate for Orthopedic Applications

机译：用于骨科应用的多孔钽泡沫冶金附着到钛基底上

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摘要

A porous tantalum foam (Trabecular Metal™) has been successfully attached to a titanium substrate for an orthopedic acetabular cup application by two different methods: sintered powder processing and diffusion bond processing. A metallurgical evaluation of the interfaces between the tantalum foam and the titanium substrates has been performed, as well as long-term corrosion immersion tests to evaluate the susceptibility of the materials and design to crevice corrosion attack. The sintered powder attachment method used sprayed titanium powder at the interface between the tantalum foam and the titanium substrate. The assembly is sintered at high temperature to form a metallurgical bond between the sintered titanium powder and the titanium substrate and a predominately mechanical interlock between the sintered powder and the tantalum foam. The diffusion bond attachment process used time, pressure, and temperature to form a metallurgical bond between the tantalum foam and the titanium substrate by solid state diffusion. Both methods formed acceptable bond strengths with no evidence of corrosion attack from the corrosion immersion tests.
机译：多孔钽泡沫（Trabecular Metal™）已通过两种不同的方法成功地连接到钛基体上，用于矫形髋臼杯的应用：烧结粉末加工和扩散结合加工。已经对钽泡沫和钛基体之间的界面进行了冶金学评估，并进行了长期腐蚀浸没测试，以评估材料的敏感性和设计对缝隙腐蚀的影响。烧结粉末附着方法是在钽泡沫和钛基底之间的界面上喷涂钛粉末。该组件在高温下烧结，以在烧结的钛粉和钛基底之间形成冶金结合，并且在烧结的粉和钽泡沫之间形成主要的机械互锁。扩散结合过程使用时间，压力和温度，通过固态扩散在钽泡沫和钛基底之间形成冶金结合。两种方法均形成可接受的粘结强度，而腐蚀浸没测试没有证据表明腐蚀。

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