Nájera-Cabrales H D, Ortega-Arroyo L, Campos-Silva I, Mejía-Caballero I, Palomar-Pardavé M, Aldana-González J, Pérez-Pastén-Borja R
Instituto Politécnico Nacional, Grupo Ingeniería de Superficies, SEPI-ESIME, U.P. Adolfo López Mateos, Zacatenco, Mexico City, 07738, Mexico.
Universidad Anáhuac, Av. Universidad Anáhuac 46, Col. Lomas Anáhuac Huixquilucan, Mexico City, 52786, Mexico.
J Mech Behav Biomed Mater. 2023 Apr;140:105687. doi: 10.1016/j.jmbbm.2023.105687. Epub 2023 Jan 30.
This study evaluated the influence of the TiO nanoparticles (NPs) on the mechanical and chemical performance of Sn and Sn-Ag alloys. The XRD (X-ray diffraction) and HR-TEM (high resolution-transmission electron microscopy) methods were used to characterize the NPs synthesized by the sol-gel microwave process. The chemical composition of the alloys was Sn, Sn+3TiO NPs, Sn-5Ag+1.5TiO NPs, Sn-10Ag, and Sn-10Ag+3TiO NPs, obtained from an experimental factorial design (EFD). A statistical model was used to determine the mechanical and chemical properties, showing the Vickers hardness response surface, tensile strength, wear, and corrosion resistance. The wear and corrosion tests for the various alloy compositions were performed using human artificial saliva solution. The results indicated that the Sn-10Ag+3TiO NPs exhibited the highest mechanical performance due to their increased hardness (380 HV), tensile strength (370 N), and wear resistance (0.34 × 10 mm Nm); in all the cases, the inclusion of TiO NPs enhanced the corrosion resistance of the alloys. According to the American Dental Association (ADA), Sn-10Ag+3TiO NPs alloy could be classified as a possible type IV restorative material.
本研究评估了TiO纳米颗粒（NPs）对Sn及Sn-Ag合金力学和化学性能的影响。采用X射线衍射（XRD）和高分辨率透射电子显微镜（HR-TEM）方法对通过溶胶-凝胶微波法合成的纳米颗粒进行表征。合金的化学成分包括Sn、Sn + 3TiO NPs、Sn - 5Ag + 1.5TiO NPs、Sn - 10Ag和Sn - 10Ag + 3TiO NPs，这些是通过实验析因设计（EFD）获得的。使用统计模型来确定力学和化学性能，展示了维氏硬度响应面、拉伸强度、磨损和耐腐蚀性。针对各种合金成分，使用人工唾液溶液进行磨损和腐蚀测试。结果表明，Sn - 10Ag + 3TiO NPs由于硬度增加（380 HV）、拉伸强度提高（370 N）和耐磨性增强（0.34×10 mm Nm）而表现出最高的力学性能；在所有情况下，TiO NPs的加入都提高了合金的耐腐蚀性。根据美国牙科协会（ADA）的标准，Sn - 10Ag + 3TiO NPs合金可归类为可能的IV类修复材料。
