氮化硼纳米管显著增强铜基复合材料

陈乃齐; 李全; 马有草; 杨昆明; 宋健; 刘悦; 范同祥

doi:10.1007/s12613-023-2633-6

Volume 30 Issue 9

Sep. 2023

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文章导航 > 矿物冶金与材料学报（英文） > 2023 > 30(9): 1764-1778

Naiqi Chen, Quan Li, Youcao Ma, Kunming Yang, Jian Song, Yue Liu, and Tongxiang Fan, Significant strengthening of copper-based composites using boron nitride nanotubes, Int. J. Miner. Metall. Mater., 30(2023), No. 9, pp. 1764-1778. https://doi.org/10.1007/s12613-023-2633-6

Cite this article as:

Naiqi Chen, Quan Li, Youcao Ma, Kunming Yang, Jian Song, Yue Liu, and Tongxiang Fan, Significant strengthening of copper-based composites using boron nitride nanotubes, Int. J. Miner. Metall. Mater., 30(2023), No. 9, pp. 1764-1778. https://doi.org/10.1007/s12613-023-2633-6

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研究论文

氮化硼纳米管显著增强铜基复合材料

1)
上海交通大学金属基复合材料国家重点实验室，上海 200240
2)
中国工程物理研究院材料研究所，绵阳 621900

通讯作者:
刘悦 E-mail: yliu23@sjtu.edu.cn

范同祥 E-mail: txfan@sjtu.edu.cn

文章亮点

(1)确定BNNTs最佳制备参数，阐明相关生长机制。

(2)对比3vol.% BNNTs/Cu和3vol.%CNTs/Cu复合材料室温 (293K)和高温力学性能(873K)，发现两者室温性能相近，但高温性能前者显著优于后者。

(3) 通过分析相关增强机制，我们将BNNT/Cu的优异高温力学性能归因于其更强的层间界面剪切强度和界面结合强度，因此具有更高的载荷传递效率。

中文摘要

氮化硼纳米管（BNNTs）和碳纳米管（CNTs）具有优异的力学和物理性能，与CNTs相比，BNNTs具有更强的层间剪切强度和较高的温度稳定性，意味着BNNTs具有更好的增强效果。然而，由于缺乏高质量的BNNTs合成方法，目前BNNTs增强铜（Cu）基复合材料的力学性能和增强机制缺乏研究。因此，本文以氧化锂和硼粉作为原料，通过球磨和退火的方法制备了高质量的BNNTs，研究了BNNTs的最佳合成参数和生长机制，即经典的气相-液相-固相合成机制。通过球磨、放电离子体烧结和热轧工艺成功制备了分散良好的3vol.%BNNTs/Cu和3vol.%CNTs/Cu。对比研究了294 K至893 K温度下BNNTs/Cu和CNTs/Cu的拉伸性能和增强机制。在293 K时，BNNTs/Cu和CNTs/Cu的极限拉伸性能接近，达到约404 MPa，比纯Cu高出约171%。然而，在893 K时，BNNTs/Cu的极限拉伸性能和屈服性能分别比CNTs/Cu高出27%和29%。通过定量研究和对比了BNNTs/Cu和CNTs/Cu的载荷传递增强、细晶强化增强、位错密度增强和残余热应力增强四种增强机制，我们认为BNNTs比CNTs具有更强的层间剪切强度和界面结合强度，以及更高的载荷传递效率。

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Research Article

Significant strengthening of copper-based composites using boron nitride nanotubes

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Abstract

Abstract

Nanotubes, such as boron nitride nanotubes (BNNTs) and carbon nanotubes (CNTs), exhibit excellent mechanical properties. In this work, high-quality BNNTs were synthesized by ball milling and annealing. Subsequently, well-dispersed 3vol% BNNTs/Cu and 3vol% CNTs/Cu composites were successfully prepared using ball milling, spark plasma sintering, and followed by hot-rolling. Moreover, the mechanical properties and strengthening mechanisms of BNNTs/Cu and CNTs/Cu composites were compared and discussed in details. At 293 K, both BNNTs/Cu and CNTs/Cu composites exhibited similar ultimate tensile strength (UTS) of ~404 MPa, which is approximately 170% higher than pure Cu. However, at 873 K, the UTS and yield strength of BNNTs/Cu are 27% and 29% higher than those of CNTs/Cu, respectively. This difference can be attributed to the stronger inter-walls shear resistance, higher thermomechanical stability of BNNTs, and stronger bonding at the BNNTs/Cu interface as compared to the CNTs/Cu interface. These findings provide valuable insights into the potential of BNNTs as an excellent reinforcement for metal matrix composites, particularly at high temperature.
- boron nitride nanotubes;
- copper matrix composites;
- excellent mechanical property;
- strengthening mechanism

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