材料科学
微观结构
无定形固体
复合材料
晶体孪晶
碳纳米管
基质(水族馆)
纳米管
涂层
堆积
结晶学
化学
海洋学
地质学
有机化学
作者
Gengjie Wang,Lin Li,Shumin Zhang,Lu Zhu,Yaoyin Zhang,Zhifu Huang,Zhenhua Cao,Xiangkang Meng
标识
DOI:10.1016/j.jallcom.2023.170439
摘要
The microstructure and substrate temperature dependence of FeCoNiCrCu high-entropy alloys (HEAs) coatings on carbon nanotube (CNT) surfaces were investigated using experimental and molecular dynamics simulations. It was found that the crystal structure of FeCoNiCrCu underwent the evolution of amorphous, stacking faults (SFs), multiple-fold twins, and columnar grains with an increase in the CNT substrate temperature. When the CNT substrate temperature was less than 800 K, the SFs and microtwin formation was induced by the mismatch stress at the interface of HEAs and CNT. Meanwhile, the refinement of SFs was caused by continuous crossing and cutting of dislocations. When the CNT substrate temperature was greater than 800 K, multiple-fold twin were induced by thermal stress at the surface of HEAs coating. During the evolution of the fivefold twin, the first microtwin was formed from the surface of the HEAs, and the remaining four microtwin growth from the center successively. These results provide a new method to design and control the interface structure between HEAs and CNTs.
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