Mechanical Properties of Porous Ti-Nb-Zr Alloy Fabricated by Using a Combined Process of Decomposite - Sintering Method in Vacuum Atmosphere

摘要

Present research work reports a study on new mechanical phenomenon of the porous Ti-3.5Nb-3.5Zr materials that address for implant materials in dental. The mechanical testing samples were prepared by two-step sintering method with dimension of 10 mm and height of 10mm. The compressive tests were carried on MTS instrument to determine the strain-stress curves. Then mechanical behavior of the materials was analyzed from those curves. For samples after sintering without space holder and binder addition, there were three deformation regions on the curves that were linear elasticity, plateau and densification. The mechanical behavior of materials was modeled, and the main parameters in the model were identified from the strain - stress curve. For sample after sintering with space holder and binder, materials were brittle. The mechanical properties of those samples were also determined. Microstructures of materials before mechanical testing were observed by SEM, and the surface was also analyzed by XRD.