双金属纳米合金的成分及熔化温度对尺寸的依赖性

IF 1.1 4区工程技术 Q4 Engineering

High Temperatures-high Pressures Pub Date : 2021-01-01 DOI:10.32908/hthp.v50.981

M. Goyal

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引用次数: 1

摘要

将金属纳米材料黏结能的物候模型扩展到研究双金属纳米结构热力学性质的变化。对双金属纳米材料的熔融温度变化进行了系统的研究，研究了尺寸、成分和尺寸的影响。随着纳米合金尺寸的减小，双金属纳米合金的熔化温度降低。结果表明，对于相同成分和尺寸的双金属纳米合金，其熔化温度随纳米合金尺寸的不同而变化，其顺序为(Tmn)纳米膜> (Tmn)纳米线> (Tmn)纳米颗粒。将扩展模型的预测结果与现有的模拟和实验结果进行了比较。比较结果具有良好的一致性，证明了模型理论的正确性。

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Composition and dimension dependence of melting temperature in bimetallic nanoalloys

The phenomological model for cohesive energy of metallic nanomaterials is extended to investigate the variation in thermodynamic properties of bimetallic nanostructures. The systematic investigation of variation in melting temperature of bimetallic nanomaterials is done to study the impact of size, composition and dimension. Decrease in melting temperature of bimetallic nanoalloys is found as size of nanoalloy decreases. It is noted that for bimetallic nanoalloys of same composition and having same size, the melting temperature varies on the basis of dimension of nanoalloy in the sequence such that (Tmn)nanofilms> (Tmn)nanowires> (Tmn)nanoparticles. The present predicted results obtained from extended model are compared with the simulated and experimental results available. Good consistency is observed between the compared results which justify the present model theory.

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来源期刊

High Temperatures-high Pressures THERMODYNAMICS-MECHANICS

CiteScore

1.00

自引率

9.10%

发文量

期刊介绍： High Temperatures – High Pressures (HTHP) is an international journal publishing original peer-reviewed papers devoted to experimental and theoretical studies on thermophysical properties of matter, as well as experimental and modelling solutions for applications where control of thermophysical properties is critical, e.g. additive manufacturing. These studies deal with thermodynamic, thermal, and mechanical behaviour of materials, including transport and radiative properties. The journal provides a platform for disseminating knowledge of thermophysical properties, their measurement, their applications, equipment and techniques. HTHP covers the thermophysical properties of gases, liquids, and solids at all temperatures and under all physical conditions, with special emphasis on matter and applications under extreme conditions, e.g. high temperatures and high pressures. Additionally, HTHP publishes authoritative reviews of advances in thermophysics research, critical compilations of existing data, new technology, and industrial applications, plus book reviews.