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Title: Nanocrystalline high-entropy alloy (CoCrFeNiAl 0.3 ) thin-film coating by magnetron sputtering

Abstract

High-entropy CoCrFeNiAl0.3 alloy thin films were prepared by magnetron sputtering technique. The thin film surface was very smooth and homogeneous. The synchrotron X-ray experiment confirmed that (111) type of texture existed in the thin film, and the structure was face-centered cubic nanocrystals with a minor content of ordered NiAl-type body-centered cubic structures. Interestingly, the elastic modulus of the thin film was nearly the same to the bulk single-crystal counterpart, however, the nanohardness is about four times of the bulk single-crystal counterpart. It was found that the high hardness was due to the formation of nanocrystal structure inside the thin films and the preferred growth orientation, which could be promising for applications in micro fabrication and advanced coating technologies.

Authors:
; ; ; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
FOREIGN
OSTI Identifier:
1375345
Resource Type:
Journal Article
Resource Relation:
Journal Name: Thin Solid Films; Journal Volume: 638; Journal Issue: C
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; High-entropy alloy; NanocrystallineThin film coating; Synchrotron X-ray scattering; Mechanical properties

Citation Formats

Liao, Weibing, Lan, Si, Gao, Libo, Zhang, Hongti, Xu, Shang, Song, Jian, Wang, Xunli, and Lu, Yang. Nanocrystalline high-entropy alloy (CoCrFeNiAl 0.3 ) thin-film coating by magnetron sputtering. United States: N. p., 2017. Web. doi:10.1016/j.tsf.2017.08.006.
Liao, Weibing, Lan, Si, Gao, Libo, Zhang, Hongti, Xu, Shang, Song, Jian, Wang, Xunli, & Lu, Yang. Nanocrystalline high-entropy alloy (CoCrFeNiAl 0.3 ) thin-film coating by magnetron sputtering. United States. doi:10.1016/j.tsf.2017.08.006.
Liao, Weibing, Lan, Si, Gao, Libo, Zhang, Hongti, Xu, Shang, Song, Jian, Wang, Xunli, and Lu, Yang. 2017. "Nanocrystalline high-entropy alloy (CoCrFeNiAl 0.3 ) thin-film coating by magnetron sputtering". United States. doi:10.1016/j.tsf.2017.08.006.
@article{osti_1375345,
title = {Nanocrystalline high-entropy alloy (CoCrFeNiAl 0.3 ) thin-film coating by magnetron sputtering},
author = {Liao, Weibing and Lan, Si and Gao, Libo and Zhang, Hongti and Xu, Shang and Song, Jian and Wang, Xunli and Lu, Yang},
abstractNote = {High-entropy CoCrFeNiAl0.3 alloy thin films were prepared by magnetron sputtering technique. The thin film surface was very smooth and homogeneous. The synchrotron X-ray experiment confirmed that (111) type of texture existed in the thin film, and the structure was face-centered cubic nanocrystals with a minor content of ordered NiAl-type body-centered cubic structures. Interestingly, the elastic modulus of the thin film was nearly the same to the bulk single-crystal counterpart, however, the nanohardness is about four times of the bulk single-crystal counterpart. It was found that the high hardness was due to the formation of nanocrystal structure inside the thin films and the preferred growth orientation, which could be promising for applications in micro fabrication and advanced coating technologies.},
doi = {10.1016/j.tsf.2017.08.006},
journal = {Thin Solid Films},
number = C,
volume = 638,
place = {United States},
year = 2017,
month = 9
}
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