Diffusion Bonding of Ti-6Al-4V Sheet with Ti-6Al-4V Foam for Biomedical Implant Applications

作者：Hamilton Brittany; Oppenheimer Scott; Dunand David C; Lewis Daniel^*

来源：Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 2013, 44(6): 1554-1559.

DOI：10.1007/s11663-013-9942-5

Advanced metallic bone implants are designed to have a porous surface to improve osseointegration and reduce risks of loosening. An alternative approach to existing surface treatments to create a porous surface is to bond separately produced metallic foams onto the implant. To assess the feasibility of this approach, a Ti-6Al-4V foam was diffusion bonded onto bulk Ti-6Al-4V in an argon atmosphere at temperatures between 1173 K and 1223 K (900 A degrees C and 950 A degrees C) for times between 45 and 75 minutes. These specimens were tested in tension to determine bond quality: failures occurred in the foam, indicating a strong diffusion-bonded interface. The quality of the bond was confirmed by metallographic studies, indicating that this approach, which can also be applied to creating of sandwich with porous cores, is successful.

• 出版日期2013-12
• 单位西北大学