Effect of the interface energy on the pressure-induced superheating of metallic nanoparticles embedded in a matrix

被引：7

作者：

Zhao, M. ^{[1
]}

Yao, X. ^{[1
]}

Zhu, Y. F. ^{[1
]}

Jiang, Q. ^{[1
]}

机构：

[1] Jilin Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Automobile Mat, Changchun 130022, Jilin, Peoples R China

来源：

SCRIPTA MATERIALIA | 2018年 / 142卷

基金：

中国国家自然科学基金;

关键词：

Superheating; Nanocrystalline metal; Surface energy; Thermodynamics; MELTING TEMPERATURE; THERMAL-EXPANSION; ELASTIC PROPERTIES; NANOSTRUCTURED MATERIALS; SIZE; ALUMINUM; GOLD; CONSTANTS; PB; THERMODYNAMICS;

D O I：

10.1016/j.scriptamat.2017.07.009

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The pressure-induced superheating of metallic nanoparticles embedded in a coherent or incoherent matrix was evaluated by considering the interface energy effect. As the size decreases, the superheating is weakened from the bulk value to zero for these two systems. Associated to the competing roles of different thermodynamic quantities, the weakening in the coherent system originates from the predominant lattice contraction and melting enthalpy reinforcement because of the negative interface energy, but that in the incoherent system results from the bulk modulus decline due to the positive interface energy. Our theoretical predictions are in agreement with available literature results. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：23 / 27

页数：5

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