Interfacial reaction between titanium and partially stabilized zirconia (ZrO2-9wt% Y2O3) at 1800°C

Anshuman R Mulak, University of Texas at El Paso

Abstract

Titanium alloys have excellent properties in terms of strength and good corrosion resistance for biomedical and aerospace applications. However, they are extremely reactive at high temperature during processing which is costly. A less expensive option would be the use of a zirconia crucible instead of the skull melting process presently applied. In this study the interfacial reaction between titanium and partially stabilized zirconia (ZrO2-9wt%Y 2O3) at 1800°C has been investigated. ^ Experiments were conducted, by melting titanium in partially stabilized zirconia (ZrO2-9wt%Y2O3) crucible at 1800°C for 30 minutes, 60 minutes, 120 minutes, and 240 minutes. The melting was performed in an induction furnace under deoxidized argon purified with copper heated 200°C–300°C and titanium heated at 816°C and 550°C in two separate furnaces. The interface between titanium and partially stabilized zirconia (ZrO2-9wt%Y2O3) was characterized by a scanning electron microscope with an energy dispersive spectrometer and X-ray diffraction. ^ The scanning electron micrograph showed no interfacial reaction at 1800°C for 30 minutes, 60 minutes and 240 minutes. However the sample heated at 1800°C for 120 minutes showed a reaction layer between titanium and partially stabilized zirconia (ZrO2-9wt%Y2O3) crucible. The reactivity between titanium and zirconia depends on the oxygen potential of the reaction chamber at a temperature of 1800°C. ^

Subject Area

Engineering, Mechanical

Recommended Citation

Mulak, Anshuman R, "Interfacial reaction between titanium and partially stabilized zirconia (ZrO2-9wt% Y2O3) at 1800°C" (2005). ETD Collection for University of Texas, El Paso. AAI1427717.
http://digitalcommons.utep.edu/dissertations/AAI1427717

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