用作牙科植入材料的Ti-15Zr合金的微观结构与力学性能
Microstructure and mechanical properties of Ti-15Zr alloy used as dental implant material.
作者信息
Medvedev Alexander E, Molotnikov Andrey, Lapovok Rimma, Zeller Rolf, Berner Simon, Habersetzer Philippe, Dalla Torre Florian
机构信息
Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia.
Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia.
出版信息
J Mech Behav Biomed Mater. 2016 Sep;62:384-398. doi: 10.1016/j.jmbbm.2016.05.008. Epub 2016 May 11.
Ti-Zr alloys have recently started to receive a considerable amount of attention as promising materials for dental applications. This work compares mechanical properties of a new Ti-15Zr alloy to those of commercially pure titanium Grade4 in two surface conditions - machined and modified by sand-blasting and etching (SLA). As a result of significantly smaller grain size in the initial condition (1-2µm), the strength of Ti-15Zr alloy was found to be 10-15% higher than that of Grade4 titanium without reduction in the tensile elongation or compromising the fracture toughness. The fatigue endurance limit of the alloy was increased by around 30% (560MPa vs. 435MPa and 500MPa vs. 380MPa for machined and SLA-treated surfaces, respectively). Additional implant fatigue tests showed enhanced fatigue performance of Ti-15Zr over Ti-Grade4.
钛锆合金作为牙科应用的有前景材料，最近开始受到大量关注。这项工作比较了一种新型Ti-15Zr合金与商业纯钛4级在两种表面条件下的力学性能——加工表面和经过喷砂蚀刻（SLA）改性的表面。由于初始状态下晶粒尺寸显著更小（1-2微米），发现Ti-15Zr合金的强度比4级钛高10-15%，同时拉伸伸长率没有降低，断裂韧性也没有受损。该合金的疲劳 endurance极限分别提高了约30%（加工表面为560MPa对435MPa，SLA处理表面为500MPa对380MPa）。额外的植入物疲劳试验表明，Ti-15Zr的疲劳性能优于Ti-4级。
Zotero 插件