Titanium is frequently used as a biomaterial and the importance of Ti–Ag alloys has increased thanks to the antibacterial behavior of silver. In this study, Ti–Ag alloys (5, 10 and 15 wt% Ag) were obtained by two different powder metallurgy routes: blended elemental (BE) and mechanical alloying (MA). The influence of the powder mixture methodology on both microstructure and electrochemical behavior was analyzed. Powders were compacted at 600 and 900 MPa, respectively, and sintered at high vacuum for 3 h at 950 °C. The obtained Ti–Ag alloys were microstructurally characterized by Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray Spectroscopy (EDS) and X-Ray Diffraction (XRD), and mechanically tested by hardness and bending tests. Electrochemical tests were run using a three-electrode cell in an artificial Fusayama saliva solution. Open-Circuit Potential (OCP), polarization curves, potentiostatic tests and Electrochemical Impedance Spectroscopy (EIS) techniques were employed to evaluate the corrosion resistance of the studied Ti–Ag alloys. The initial characteristics of powders before sintering and after blend/alloying modified the electrochemical behavior of the Ti–Ag-sintered alloys and were determined. The samples obtained with the BE powders better resisted corrosion than the MA samples, and this behavior was directly related to the quantity and distribution of intermetallic Ti₂Ag. A large quantity of intermetallics present on both the edge and inside grains reduced the corrosion resistance of TiAg alloys.

钛经常被用作生物材料，并且由于银的抗菌性能，Ti-Ag合金的重要性也有所提高。在这项研究中，通过两种不同的粉末冶金途径获得了Ti-Ag合金（5、10和15 wt％Ag）：混合元素（BE）和机械合金化（MA）。分析了粉末混合物方法对微观结构和电化学行为的影响。将粉末分别在600和900 MPa下压实，并在950°C的高真空下烧结3 h。通过扫描电子显微镜（SEM），能量色散X射线能谱（EDS）和X射线衍射（XRD）对获得的Ti-Ag合金进行微观结构表征，并通过硬度和弯曲测试对其进行机械测试。使用三电极电池在人工Fusayama唾液溶液中进行电化学测试。开路电势（OCP），极化曲线，恒电位测试和电化学阻抗谱（EIS）技术用于评估研究的Ti-Ag合金的耐腐蚀性。粉末在烧结之前和混合/合金化之后的初始特性改变了Ti-Ag烧结合金的电化学行为，并进行了测定。用BE粉末获得的样品比MA样品具有更好的抗腐蚀性能，这种行为与金属间Ti的数量和分布直接相关 粉末在烧结之前和混合/合金化之后的初始特性改变了Ti-Ag烧结合金的电化学行为，并进行了测定。用BE粉末获得的样品比MA样品具有更好的抗腐蚀性能，这种行为与金属间Ti的数量和分布直接相关 粉末在烧结之前和混合/合金化之后的初始特性改变了Ti-Ag烧结合金的电化学行为，并进行了测定。用BE粉末获得的样品比MA样品具有更好的抗腐蚀性能，这种行为与金属间Ti的数量和分布直接相关₂银 边缘和内部晶粒上都存在大量的金属间化合物，降低了TiAg合金的耐腐蚀性。