Abstract
This work aims to investigate the effect of Pt concentration on the crystal growth mechanism of a Platinum-Palladium (Pt-Pd) binary alloy system during the annealing process; starting from the amorphous phase to some definite temperatures. The calculations have been performed by using molecular dynamic (MD) simulations. Interatomic interactions are described by the Sutton-Chen type Embedded Atom Potential Energy function. In order to understand the main structural properties at the stable and unstable phases; changes in radial distribution function (RDF) curves versus time have been analyzed for different annealing temperatures. Crystalline type bonded pairs have been determined using MD calculations which is required for the computation of Avrami coefficients and for understanding crystal growth mechanism. The results demonstrate that the increase in concentration of Pt during annealing leads to migration of atoms in the crystal lattice points; elimination of dislocations and formation of perfect crystal structure.
Highlights
Platinum (Pt) and Pt-based alloys are extensively used because of their significant technological applications
These metal alloys are preferred for some applications in areas such as electronics, crystal growth, automotive, solidification technology and the jewelry industry [5,6]
Information about Avrami coefficients leads to a better understandingof of the thecrystallization crystallization mechanism mechanism during during the the annealing annealing process process starting starting from fromthe theamorphous amorphousphase phaseat at
Summary
Platinum (Pt) and Pt-based alloys are extensively used because of their significant technological applications. Numerous studies have been introduced on platinum and platinum-based alloys [1,2,3] These alloys are costly materials, they are commonly-used in industry and technology due to their unique physical properties [4]. Pt-Pd solid solutions have some important physical properties [7,8] and they are used in the productions of thin films and play an important role in experimental studies of metallurgical science. Despite their advantages, many physical properties of Pt-alloys have not been determined because of their high cost performance. These difficulties can be eliminated by strong simulations which are preferred in different disciplines [11,12,13]
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