Ultrahigh hardness and high electrical resistivity in nano-twinned, nanocrystalline high-entropy alloy films

Wenyi Huo; Xiaodong Liu; Shuyong Tan; Feng Fang; Zonghan Xie; Jianku Shang; Jianqing Jiang

doi:10.1016/j.apsusc.2018.01.050

Ultrahigh hardness and high electrical resistivity in nano-twinned, nanocrystalline high-entropy alloy films

Wenyi Huo, Xiaodong Liu, Shuyong Tan, Feng Fang, Zonghan Xie, Jianku Shang, Jianqing Jiang

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Nano-twinned, nanocrystalline CoCrFeNi high-entropy alloy films were produced by magnetron sputtering. The films exhibit a high hardness of 8.5 GPa, the elastic modulus of 161.9 GPa and the resistivity as high as 135.1 μΩ·cm. The outstanding mechanical properties were found to result from the resistance of deformation created by nanocrystalline grains and nano-twins, while the electrical resistivity was attributed to the strong blockage effect induced by grain boundaries and lattice distortions. The results lay a solid foundation for the development of advanced films with structural and functional properties combined in micro-/nano-electronic devices.

Original language	English (US)
Pages (from-to)	222-225
Number of pages	4
Journal	Applied Surface Science
Volume	439
DOIs	https://doi.org/10.1016/j.apsusc.2018.01.050
State	Published - May 1 2018

Keywords

High-entropy alloy film
Mechanical properties
Nano-twin
Nanocrystalline
Resistivity

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

Online availability

10.1016/j.apsusc.2018.01.050

Library availability

Discover UIUC Full Text

Cite this

@article{9d991b3b173045f78282cba6fa3ae86a,

title = "Ultrahigh hardness and high electrical resistivity in nano-twinned, nanocrystalline high-entropy alloy films",

abstract = "Nano-twinned, nanocrystalline CoCrFeNi high-entropy alloy films were produced by magnetron sputtering. The films exhibit a high hardness of 8.5 GPa, the elastic modulus of 161.9 GPa and the resistivity as high as 135.1 μΩ·cm. The outstanding mechanical properties were found to result from the resistance of deformation created by nanocrystalline grains and nano-twins, while the electrical resistivity was attributed to the strong blockage effect induced by grain boundaries and lattice distortions. The results lay a solid foundation for the development of advanced films with structural and functional properties combined in micro-/nano-electronic devices.",

keywords = "High-entropy alloy film, Mechanical properties, Nano-twin, Nanocrystalline, Resistivity",

author = "Wenyi Huo and Xiaodong Liu and Shuyong Tan and Feng Fang and Zonghan Xie and Jianku Shang and Jianqing Jiang",

note = "Funding Information: The work was supported by the Natural Science Foundation of China ( 51371050 ), Key Research Project, Jiangsu Province, China (BE2015097), the Industry-University Strategic Research Fund of Jiangsu Province ( BY2016076-08 ), the {\textquoteleft} Six Talent Peaks {\textquoteright} Project of Jiangsu Province ( 2015-XCL-004 ) and the {\textquoteleft}Scientific Research Foundation{\textquoteright} project of the Graduate School of Southeast University (YBJJ1726). Dr. Z. Xie acknowledges the support provided by the Australian Research Council Discovery Projects. Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = may,

day = "1",

doi = "10.1016/j.apsusc.2018.01.050",

language = "English (US)",

volume = "439",

pages = "222--225",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier",

}

TY - JOUR

T1 - Ultrahigh hardness and high electrical resistivity in nano-twinned, nanocrystalline high-entropy alloy films

AU - Huo, Wenyi

AU - Liu, Xiaodong

AU - Tan, Shuyong

AU - Fang, Feng

AU - Xie, Zonghan

AU - Shang, Jianku

AU - Jiang, Jianqing

N1 - Funding Information: The work was supported by the Natural Science Foundation of China ( 51371050 ), Key Research Project, Jiangsu Province, China (BE2015097), the Industry-University Strategic Research Fund of Jiangsu Province ( BY2016076-08 ), the ‘ Six Talent Peaks ’ Project of Jiangsu Province ( 2015-XCL-004 ) and the ‘Scientific Research Foundation’ project of the Graduate School of Southeast University (YBJJ1726). Dr. Z. Xie acknowledges the support provided by the Australian Research Council Discovery Projects. Publisher Copyright: © 2018 Elsevier B.V.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Nano-twinned, nanocrystalline CoCrFeNi high-entropy alloy films were produced by magnetron sputtering. The films exhibit a high hardness of 8.5 GPa, the elastic modulus of 161.9 GPa and the resistivity as high as 135.1 μΩ·cm. The outstanding mechanical properties were found to result from the resistance of deformation created by nanocrystalline grains and nano-twins, while the electrical resistivity was attributed to the strong blockage effect induced by grain boundaries and lattice distortions. The results lay a solid foundation for the development of advanced films with structural and functional properties combined in micro-/nano-electronic devices.

AB - Nano-twinned, nanocrystalline CoCrFeNi high-entropy alloy films were produced by magnetron sputtering. The films exhibit a high hardness of 8.5 GPa, the elastic modulus of 161.9 GPa and the resistivity as high as 135.1 μΩ·cm. The outstanding mechanical properties were found to result from the resistance of deformation created by nanocrystalline grains and nano-twins, while the electrical resistivity was attributed to the strong blockage effect induced by grain boundaries and lattice distortions. The results lay a solid foundation for the development of advanced films with structural and functional properties combined in micro-/nano-electronic devices.

KW - High-entropy alloy film

KW - Mechanical properties

KW - Nano-twin

KW - Nanocrystalline

KW - Resistivity

UR - http://www.scopus.com/inward/record.url?scp=85040332616&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85040332616&partnerID=8YFLogxK

U2 - 10.1016/j.apsusc.2018.01.050

DO - 10.1016/j.apsusc.2018.01.050

M3 - Article

AN - SCOPUS:85040332616

SN - 0169-4332

VL - 439

SP - 222

EP - 225

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Ultrahigh hardness and high electrical resistivity in nano-twinned, nanocrystalline high-entropy alloy films

Abstract

Keywords

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this