Al2O3 涂层厚度对铜-碳纳米管混合物热稳定性的影响

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

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引用次数: 0

摘要

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

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

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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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.