Thermodynamics modeling of cohesive energy of metallic nano-structured materials
Source abstract
Abstract
Abstract A new modeling approach based on thermodynamics has been proposed to explain cohesive energy of metallic nano-structured materials. It was assumed that the nano-structured materials are nano-composites in which nano-crystals act as reinforcements embedded either in a disordered matrix, such as grain boundary area, or an ordered matrix, such as a crystalline metal. Then, cohesive energy of each part of the nano-composites including nano-crystallites, interfaces between these parts and grain boundaries in addition to inner structure of grain boundaries modeled individually considering the effect of size of nano-crystals as well as the effect of crystallinity of the matrix. The results of these calculations on the example of Au have been presented. On the basis of these calculations, the model outputs were in good agreement with predictions and reported abnormal behaviors of nano-structured materials in the literature such as superheating, in nano-composites, and decrease in melting point as a result of decrease in crystallite size, in metallic nano-structures.
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Research context
OpenAlex topics: nanoparticles nucleation surface interactions · High-Temperature Coating Behaviors · Laser-Ablation Synthesis of Nanoparticles
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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