Nanoalloying of clusters of immiscible metals and the formation of bimetallic nanoparticles in the conditions of non-synchronous explosion of two wires

被引：16

作者：

Pervikov, A., V ^{[1
]}

Suliz, K., V ^{[1
,2
]}

Lerner, M., I ^{[1
,3
]}

机构：

[1] Inst Strength Phys & Mat Sci SB RAS, 2-4 Akad Skii Pr, Tomsk 634055, Russia

[2] Natl Res Tomsk Polytech Univ, 30 Lenina Pr, Tomsk 634050, Russia

[3] Natl Res Tomsk State Univ, 36 Lenina Pr, Tomsk 634050, Russia

来源：

POWDER TECHNOLOGY | 2020年 / 360卷

基金：

俄罗斯科学基金会;

关键词：

Bimetallic nanoparticles; Explosion of two wires; Metal mixing enthalpy; Nanoalloying of clusters; Immiscible metals; ELECTRICAL EXPLOSION; NI; PARTICLES; DISCHARGE; DYNAMICS; ENERGY; ALLOY; CORE;

D O I：

10.1016/j.powtec.2019.11.003

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The work researches the influence of metal mixing enthalpy on spontaneous nanoalloying of coagulated clusters formed when intertwined Fe/Ag, Ni/Ag, Nb/Cu and Pb/Cu wires with equiatomic composition are exploded. The analysis of temporal dependencies of currents and voltages has shown that the intervals between the successive explosions of Fe/Ag, Ni/Ag, Nb/Cu and Pb/Cu wires are 0.38, 0.26, 0.43 and 0.4 mu s, respectively. This explains their asynchronous destruction. It has been found that when wires are exploded, bimetallic Janus and core-shell nanoparticles are formed. The obtained data makes it possible to conclude that when wires explode nonsynchronously, clusters coagulate and atoms of metals subsequently intermix. The results of the research demonstrate that the explosion of two wires made of metals with positive mixing enthalpy (from 8 to 116 kJ/g) is a process that can be used to obtain bimetallic nanoparticles with complex structures. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：855 / 862

页数：8

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