Molecular Dynamics Simulation of Interdiffusion at the Initial Stage of High-Temperature Synthesis at the Dissolution of a Ni Nanoparticle in an Aluminum Matrix

Interdiffusion at the initial stage of high-temperature synthesis under the conditions of Ni nanoparticle dissolution in an Al matrix has been studied by the molecular dynamics method. Nickel and aluminum may be both in the amorphous and in the crystalline state. It has been shown that the inflammation temperature of the high-temperature synthesis reaction in the Ni−Al system drops much faster when nickel is in the amorphous state. At constant temperature, the rate of interdiffusion has been shown to be almost independent of the aluminum structure (crystalline or amorphous).