,Gamma and X-ray radiation compatibility of Ti-Ta-Hf-Zr alloys used for coronary stent applications

• 作 者: L.Seenappa H.C.Manjunatha K.N.Sridhar Chikka Hanumantharayappa
• 机 构: Department of Physics, Government College for Women, Kolar, Karnataka 563101, India“,”Department of
• 出 处: 核技术（英文版）
• 发表日期: 2018年1期
• 关键词: Stentalloys X-ray Gamma Mass attenuation coefficient

We have studied the gamma and X-ray radiation compatibility of Ti-based alloys such as Ti-37Ta-26Hf13Zr-24 (wt％) [Alloy 1],Ti-40Ta-22Hf-11.7Zr-26.3(wt％) [Alloy 2],Ti-45Ta-18.4Hf-10Zr-26.6 (wt％) [Alloy 3],Ti-50Ta-15Hf-8Zr-27 (wt％) [Alloy 4],Ti-55Ta12Hf-7Zr-26 (wt％) [Alloy 5],and Ti-60Ta-10Hf-5Zr-25 (wt％) [Alloy 6].Gamma and X-ray radiation compatibility is studied by evaluating the mass attenuation coefficient,mean free path,HVL,TVL effective atomic number,effective electron density,exposure buildup factor,and relative dose.We have compared these parameters for studied alloys with that of arteries.The alloys Ti-55Ta-12Hf-7Zr-26 and Ti-60Ta-10Hf-5Zr-25 have added properties such as gamma/X-ray radiation compatibility,high elastic admissible strain,high mechanical strength,and excellent biocompatibility.Hence,we may suggest that,among Ti-Ta-Hf-Zr alloys,these alloys are best materials for coronary stent applications.