Optimization of Ti-30Nb-xSn alloys on morphological, mechanical and corrosion properties

Titanium alloy has been widely used in several industrial applications because it has superior mechanical properties and good corrosion resistance. Titanium alloys are also widely used as an implant material, and the Ti-6Al-4 V is one of the most popular. Recent research proves that the release of Al and V ions from the Ti-6Al-4 V alloy can cause long-term health problems. Therefore, Titanium alloys without Aluminum and Vanadium were developed as implant material. In this paper we develop Ti-30Nb-xSn with x = 0, 2, 5 dan 8% (%wt.) as implant material. The alloying melted in an electric arc vacuum furnace, homogenised at 1000°C holding time 5 h with ice water quench. The specimen was characterised by a Vickers hardness tester, optical metallography, SEM-EDS, XRD, ultrasonic test to investigate the modulus of elasticity and corrosion testing with the potentiodynamic polarisation method. The optimum results are reached at Ti-30Nb-5Sn alloys where the β-phase optimum with modulus elasticity valued 112 GPa, and hardness Vickers valued 312.2 HV. In addition, the addition of Sn can increase corrosion resistance optimum with valued 90.11 × 10−6mmpy.