Jimenez-Marcos Cristina, Mirza-Rosca Julia Claudia, Baltatu Madalina Simona, Vizureanu Petrica
Mechanical Engineering Department, Las Palmas de Gran Canaria University, 35017 Tafira, Spain.
Materials Engineering and Welding Department, Transilvania University of Brasov, 500036 Brasov, Romania.
Materials (Basel). 2023 Jul 9;16(14):4906. doi: 10.3390/ma16144906.
The main purpose of this research is to evaluate the mechanical characteristics and biocompatibility of two novel titanium alloys, Ti15Mo7ZrxSi (x = 0, 0.5, 0.75, 1). These samples had already undergone grinding, polishing, cutting, and chipping. Electrochemical, metallographic, three-point bending, and microhardness studies were conducted on the studied materials to determine their corrosion behavior, microstructure, Young's modulus, and hardness. The first investigations revealed that both samples had biphasic and dendritic structures, elastic moduli that were between the highest and minimum values achieved by around 20 GPa, and favorable behavior when in contact with physiological fluids at ambient temperature. Ti15Mo7Zr0.5Si and Ti15Mo7Zr0.75Si, the research samples, had greater corrosion potentials, reduced corrosion rates, and therefore higher corrosion resistance, as well as modulus of elasticity values that were comparable to and closer to those of human bone. The results of this investigation indicate that both alloys exhibit favorable corrosion behavior, great biocompatibility, Young's modulus results lower than those of conventional alloys used in biomedical implants, and hardness values higher than commercially pure titanium.
本研究的主要目的是评估两种新型钛合金Ti15Mo7ZrxSi（x = 0、0.5、0.75、1）的力学特性和生物相容性。这些样品已经过研磨、抛光、切割和切片处理。对研究材料进行了电化学、金相、三点弯曲和显微硬度研究，以确定它们的腐蚀行为、微观结构、杨氏模量和硬度。初步研究表明，两种样品均具有双相和树枝状结构，弹性模量介于约20 GPa所达到的最高值和最低值之间，并且在环境温度下与生理流体接触时表现良好。研究样品Ti15Mo7Zr0.5Si和Ti15Mo7Zr0.75Si具有更高的腐蚀电位、更低的腐蚀速率，因此具有更高的耐腐蚀性，以及与人体骨骼相当且更接近人体骨骼的弹性模量值。本次研究结果表明，两种合金均表现出良好的腐蚀行为、优异的生物相容性、低于生物医学植入物中使用的传统合金的杨氏模量结果以及高于商业纯钛的硬度值。
