Lee Taekyung, Mathew Eshaan, Rajaraman Santhosh, Manivasagam Geetha, Singh Ashok Kumar, Lee Chong Soo
Department of Mechanical Engineering, Northwestern University, Evanston, IL, USA.
Centre for Biomaterials Science and Technology, School for Mechanical and Building Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu, India.
Int J Nanomedicine. 2015 Oct 1;10 Suppl 1(Suppl 1):207-12. doi: 10.2147/IJN.S79996. eCollection 2015.
Development of submicrocrystalline structure in biomedical alloy such as Ti-13Nb-13Zr (in wt%) through warm-rolling process has been found to enhance mechanical properties compared to conventional thermomechanical processing routes including hot-rolling process. The present study investigated the tribological and corrosion behaviors of warm-rolled (WR) and hot-rolled Ti-13Nb-13Zr alloys which have not been studied to date. Both tribological and corrosion experiments were carried out in simulated body fluid conditions (Hank's solution at 37°C) based on the fact that the investigated alloys would be used in a human body as orthopedic implants. The WR Ti-13Nb-13Zr demonstrated a submicrocrystalline structure that provided a significant enhancement in hardness, strength, and corrosion resistance. Meanwhile, there was no notable difference in wear resistance between the WR and hot-rolled samples despite the different microstructure and hardness. The present study confirmed the enormous potential of WR Ti-13Nb-13Zr with not only great mechanical properties but also high corrosion resistance in the simulated body fluid.
已发现，通过温轧工艺在诸如Ti-13Nb-13Zr（重量百分比）等生物医学合金中形成亚微晶结构，与包括热轧工艺在内的传统热机械加工路线相比，可提高其力学性能。本研究调查了温轧（WR）和热轧Ti-13Nb-13Zr合金的摩擦学和腐蚀行为，这些行为迄今尚未得到研究。基于所研究的合金将作为骨科植入物用于人体这一事实，摩擦学和腐蚀实验均在模拟体液条件（37°C的汉克斯溶液）下进行。温轧Ti-13Nb-13Zr呈现出亚微晶结构，该结构显著提高了硬度、强度和耐腐蚀性。同时，尽管微观结构和硬度不同，但温轧和热轧样品之间的耐磨性没有显著差异。本研究证实了温轧Ti-13Nb-13Zr不仅具有优异的力学性能，而且在模拟体液中具有高耐腐蚀性，具有巨大的潜力。
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