9-13 July 2012
The structural and elastic properties of Ti50Pt50-xCox ternaries using solid solution method employed in CASTEP
Presented by Ms. Rosinah MAHLANGU on 12 Jul 2012 from 17:30 to 19:30
Type: Poster Presentation
Session: Poster Session
Track: Track A - Division for Condensed Matter Physics and Materials
There is a growing demand of shape memory alloys that can be applied at high temperatures and TiPt was found to be one of the potential alloys since the transformation occurs at temperatures more than 1000◦C. Since Pt is expensive, in this work we replace some of the Pt by Co using the solid solution method. The Ti<sub>50</sub>Pt<sub>50-x</sub>Co<sub>x</sub> ternaries were determined using the visual crystal approximation (VCA). The structures were optimized and the equilibrium lattice parameters and their formation energy were calculated. The lattice parameters were found to be decreasing minimally with an increase in the Co and the structures become mechanically unstable with respect to the formation of energy. The elastic properties and the density of states were also calculated.
Prof P.E Ngoepe, University of Limpopo