[T13] Non Ferrous Materials

[15P-T13-02] Effect of Titanium Oxidized Treatment on Interfacial Characteristics of Ti/ZiO2 Sintered Bonding Materials

*N. Aoyagi¹, K. Kitamura¹, K. Sekita¹, J. F. Xiang², C. K. Lee², T. Galind³ (1.National Institute of Technology, Nagaoka College, Japan, 2.Nanyang Polytechnic, Singapore, 3.Nagaoka University of Technology, Japan)

Keywords:Titanium, Zirconia, Oxidized Treatment, Sintering Bonding, Microstructures

Titanium-zirconia bonded materials have been developed as biomaterials with superior properties. However, it is crucial to investigate the Ti/ZrO₂ interfacial microstructure and suppress the formation of Kirkendall voids caused by elemental diffusion at the bonding interface. This study aims to investigate the effect of oxidation treatment on suppressing elemental diffusion at the interface. Prior to sintering, the titanium surface was oxidized by different periods of time. It was studied the effect of the temperature and the holding times during the oxidation treatment of Ti substrate. Ti/ZrO₂ sintered bonds were prepared using the spark plasma sintering process. The microstructures at the bonding interface were observed using SEM. The oxidized titanium surface was analyzed using X-ray diffraction, and elemental diffusion behavior was assessed through EDS analysis. The results demonstrated that elemental diffusion at the interface can be effectively suppressed when oxidation is carried out at temperatures above 900°C for extended periods.