About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Mesoscale Phenomena in Functional Polycrystals and Their Nanostructures
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| Presentation Title |
Mesoscale Modeling of Short-Range Order and Fractal Cluster Morphology in Metal–Metalloid Coatings |
| Author(s) |
Borys Sereda, Dmytro Sereda, Irina Kruglyak, Bogdan Pavlenko |
| On-Site Speaker (Planned) |
Dmytro Sereda |
| Abstract Scope |
Mesoscale organization and short-range order in the amorphous alloys Fe₈₈P₁₂ and Cr₈₈C₁₂, obtained by electrodeposition, are modeled in this work. Based on the Bravais–Donnet–Harker principle, energetically favorable cluster shapes for the body-centered cubic (bcc) lattice of the host metal were determined, and structural factor profiles were simulated. It was established that the clusters have a shape close to that of a cuboctahedron, with characteristic dimensions of 4–5 nm, forming fractally organized mesostructures. It was shown that their growth has a pronounced radial character, which is consistent with the formation of an ellipsoidal surface morphology. It was found that the size, spatial distribution, and anisotropy of the clusters determine the functional properties of the coatings. These results demonstrate a connection between the mesoscale structure and the performance characteristics and can be used to control the synthesis parameters of functional polycrystalline materials. |