Alloying at the nanoscale

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design Pub Date : 2024-11-01 DOI:10.1016/j.matdes.2024.113410

Cai Lu , Bozhao Wu , Yangyang Pan , Hui Fang , Jianxin Liu , Xiaoqi Yang , Ze Liu

引用次数: 0

Abstract

We report a general flash arc synthesis (FAS) method to batch fabricate alloy micro/nanocrystals of up to eight components on a wafer-scale. Combined with experiments and first-principle calculations, we show that the shape and size distribution of prepared micro/nanocrystals is determined by both the adhesion energy and diffusion coefficient of metal atoms on the highly oriented pyrolytic graphite (HOPG) substrate. Moreover, we show that surface atomic steps in the HOPG substrate can induce self-assembly and anchoring of metal micro/nanocrystals. The proposed method can essentially prepare alloy micro/nanocrystals with any number of components due to the high cooling rate of micro/nanocrystals, which could lead to the quick development of new materials by directly alloying on the nanoscale and facilitate the applications of alloy micro/nanocrystals.

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纳米级合金

我们报告了一种通用的闪弧合成（FAS）方法，可在晶圆级批量制造多达八种成分的合金微/纳米晶体。结合实验和第一原理计算，我们发现制备的微/纳米晶体的形状和尺寸分布是由金属原子在高取向热解石墨（HOPG）基底上的粘附能和扩散系数决定的。此外，我们还发现 HOPG 衬底的表面原子阶梯可诱导金属微/纳米晶体的自组装和锚定。由于微/纳米晶体的冷却速度快，所提出的方法基本上可以制备出任意数量成分的合金微/纳米晶体，这可以通过直接在纳米尺度上进行合金化而快速开发出新材料，并促进合金微/纳米晶体的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials & Design Engineering-Mechanical Engineering

CiteScore

14.30

自引率

7.10%

发文量

1028

审稿时长

85 days

期刊介绍： Materials and Design is a multi-disciplinary journal that publishes original research reports, review articles, and express communications. The journal focuses on studying the structure and properties of inorganic and organic materials, advancements in synthesis, processing, characterization, and testing, the design of materials and engineering systems, and their applications in technology. It aims to bring together various aspects of materials science, engineering, physics, and chemistry. The journal explores themes ranging from materials to design and aims to reveal the connections between natural and artificial materials, as well as experiment and modeling. Manuscripts submitted to Materials and Design should contain elements of discovery and surprise, as they often contribute new insights into the architecture and function of matter.