Effect of Al2O3 coating thickness on the thermal stability of Cu–carbon nanotube hybrids

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

MRS Communications Pub Date : 2024-03-05 DOI:10.1557/s43579-024-00533-8

引用次数: 0

Abstract

Hybrids of carbon nanotube and metals have been regarded as promising candidate for flexible circuit, where thermal stability of nanograined metals is a challenging issue. In this study, we find thermal stability of Cu layer in CNT–Cu hybrids can be improved by coating Al₂O₃ layer. As for CNT–Cu hybrids, Cu nanograins are agglomerated during 673 K annealing. In contrast, the agglomeration of CNT–Cu hybrids can be suppressed after coating Al₂O₃ layer, and exhibit a thickness-dependent thermal stability after annealing at higher temperature. The underlying mechanism might be the compressive stress applied by Al₂O₃ coatings and inhibited diffusion along Cu/Al₂O₃ interfaces.

Graphical abstract

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Al2O3 涂层厚度对铜-碳纳米管混合物热稳定性的影响

摘要碳纳米管与金属的混合体一直被视为柔性电路的理想候选材料，而纳米颗粒金属的热稳定性是一个具有挑战性的问题。在这项研究中，我们发现 CNT-Cu 混合材料中铜层的热稳定性可以通过涂覆 Al2O3 层得到改善。对于 CNT-Cu 混合物，在 673 K 退火过程中铜纳米晶粒会团聚。相反，涂覆 Al2O3 层后，CNT-Cu 杂化物的团聚现象会被抑制，并且在更高温度下退火后会表现出与厚度相关的热稳定性。其根本机制可能是 Al2O3 涂层施加了压应力，并抑制了铜/Al2O3 界面的扩散。图表摘要

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

MRS Communications MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

2.60

自引率

10.50%

发文量

166

审稿时长

>12 weeks

期刊介绍： MRS Communications is a full-color, high-impact journal focused on rapid publication of completed research with broad appeal to the materials community. MRS Communications offers a rapid but rigorous peer-review process and time to publication. Leveraging its access to the far-reaching technical expertise of MRS members and leading materials researchers from around the world, the journal boasts an experienced and highly respected board of principal editors and reviewers.