Production of beta-titanium alloys for biomedical applications

In this thesis, the production and characterization of novel binary and triple titanium alloys for biomedical applications were carried out. In this thesis, Ti-Sn, Ti-Mo, Ti-Mo-Sn based binary and triple beta titanium alloys with low modulus of elasticity were produced. Binary and triple Ti-Sn, Ti-Mo, Ti-Mo-Sn based titanium alloys were produced by traditional powder metallurgy (press-sintering) method. In this thesis, Ti-Sn, Ti-Mo, Ti-Mo-Sn based titanium alloy powders were prepared by mechanical alloying (ball mill) method. Then, the green specimens were produced by hydraulic pressing. Then, the green samples were sintered between 1100-1250 °C for 1 hour. The effects of alloying elements (Mo and Sn) added to titanium on the properties of the titanium alloy were investigated The microstructure of the produced Ti-Sn, Ti-Mo, Ti-Mo-Sn based binary and triple titanium alloys was investigated using destructive (wear test, hardness test) and non-destructive (ultrasonic testing, eddy current test) methods. Additionally, the electrochemical corrosion behaviour of the titanium alloys was investigated in simulated body fluid solution by using open circuit potential, Tafel and electrochemical impedance spectroscopy tests. Properties of the titanium alloys was investigated by computational materials science based softwares and the chemical composition was optimized.