Stable nanocrystalline NbMoTaW high entropy alloy thin films with excellent mechanical and electrical properties
Stable nanocrystalline NbMoTaW high entropy alloy thin films with excellent mechanical and electrical properties
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DOI：
10.1016/j.matlet.2017.08.129
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发表时间：
2018-01-01
影响因子：
3
通讯作者：
Sun, Jun
中科院分区：
文献类型：
--
作者：
Feng, Xiaobin;Zhang, Jinyu;Sun, Jun
在这项工作中，我们系统地研究了纳米晶NbMoTaW高熵合金薄膜的硬度，电阻和热稳定性的厚度从约100到2000 nm的变化。纳米晶高熵合金膜显示出峰值硬度（类似于16.0 GPa）、强的尺寸无关电阻（类似于170 μ Omega.cm）以及稳定的单相体心立方（BCC）结构，即使在暴露于800 ℃下真空退火2小时之后。与此同时，我们为理解上述行为提供了合理的见解。这种耐高温的纳米晶HEAF材料具有优良的上级力学和电学性能以及良好的热稳定性，具有广阔的应用前景。(C)2017爱思唯尔B.V.保留所有权利。
In this work, we systematically investigated the hardness, electrical resistance and thermal stability of nanocrystalline NbMoTaW high entropy alloy films with thickness varying from about 100 to 2000 nm. The nanocrystalline high entropy alloy film exhibited the peak hardness (similar to 16.0 GPa), strong size-independent electrical resistance (similar to 170 mu Omega.cm) as well as stabilized single phase body-centered cubic (BCC) structure even after exposed to vacuum annealing at 800 degrees C for 2 h. In the meantime, we provide reasonable insights into understanding behaviors above. With superior mechanical and electrical properties as well as good thermal stability, this kind of refractory nanocrystalline HEAFs will find extensive potential applications. (C) 2017 Elsevier B.V. All rights reserved.