College of Materials Science and Engineering, Guangxi University, Nanning, Guangxi 530004, PR China.
Mater Sci Eng C Mater Biol Appl. 2013 Dec 1;33(8):5105-8. doi: 10.1016/j.msec.2013.07.038. Epub 2013 Aug 3.
In order to develop new biomaterials for hard tissue replacements, the Zr-4Cu-xNb (x=0, 0.3, 0.6 and 0.9) biomedical alloys with required properties were designed and prepared using vacuum arc melting method for the first time. Phase analysis and microstructure observation showed that all the as-cast Zr-4Cu-xNb samples consisted of α-Zr and Zr3Cu. In addition, the lamellar eutectoid is found near the grain boundary. These alloys exhibited moderate compressive strength (1150-1300 MPa), yield stress (750-1000 MPa), favorable plastic strain (19%-27%), high elastic energy (11 MJ/m(3)-16 MJ/m(3)) and low Young's modulus (25GPa-31GPa). This good combination of mechanical properties indicates them potential biomedical materials for biological hard tissue replacements.
为了开发用于硬组织替代的新型生物材料，首次使用真空电弧熔炼法设计并制备了具有所需性能的 Zr-4Cu-xNb（x=0、0.3、0.6 和 0.9）生物医学合金。相分析和微观结构观察表明，所有铸态 Zr-4Cu-xNb 样品均由 α-Zr 和 Zr3Cu 组成。此外，在晶界附近发现了层状共析体。这些合金表现出中等的抗压强度（1150-1300MPa）、屈服强度（750-1000MPa）、良好的塑性应变（19%-27%）、高弹性能量（11MJ/m(3)-16MJ/m(3)）和低杨氏模量（25GPa-31GPa）。这种良好的机械性能组合表明它们是生物硬组织替代的潜在生物医学材料。
