The study of the thermal stability of Ni3Al nanoneedles using computer simulation

International Conference on Advanced Materials and New Technologies in Modern Materials Science 2015

Poletaev, G.M.^1 ; Starostenkov, M.D.^1 ; Novoselova, D.V.^1 ; Tsellermaer, V.Y.^2

Altai State Technical University, Lenin st. 46, Barnaul

656038, Russia^1

Siberian State Industrial University, Kirov st. 42, Novokuznetsk

654007, Russia^2

关键词: Low temperatures;    Molecular dynamics methods;    Needle axis;    Radius of curvature;    Thermal influence;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/116/1/012026/pdf
DOI  :  10.1088/1757-899X/116/1/012026

来源: IOP

【 摘 要 】

The study of the thermal stability of Ni3Al nanoneedles in the dependence on the sharpness and crystallography orientation of the needle axis was held using molecular dynamics method. It is shown that the most stability nanoneedles in the conditions of thermal influence are the nanoneedles with the axis along [111] direction. Violation of the nanoneedles stability associated with their blunting, which is caused by surface diffusion. Stable radius of curvature of the needles depends on the angle of the tip and orientation of the needle axis. It is 0.6-1 nm at low temperatures.