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Volume 12
Issue 18
10.3390/ma12183008
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Article

Growth Mechanisms and the Effects of Deposition Parameters on the Structure and Properties of High Entropy Film by Magnetron Sputtering

by
Yanxia Liang
1,
Peipei Wang
1,
Yufei Wang
1,
Yijia Dai
1,
Zhaoyi Hu
1,
Denis E. Tranca
2,
Radu Hristu
2,
Stefan G. Stanciu
2,
Antonela Toma
2,
George A. Stanciu
2,*,
Xingjun Wang
3,* and
Engang Fu
1,*
1
State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
2
Center for Microscopy-Microanalysis and Information Processing, University Politehnica of Bucharest, 060042 Bucharest, Romania
3
State Key Laboratory of Advanced Optical Communication Systems and Networks, Peking University, Beijing 100871, China
*
Authors to whom correspondence should be addressed.
Materials 2019, 12(18), 3008; https://doi.org/10.3390/ma12183008
Received: 16 August 2019 / Revised: 6 September 2019 / Accepted: 9 September 2019 / Published: 17 September 2019
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Abstract

Despite intense research on high entropy films, the mechanism of film growth and the influence of key factors remain incompletely understood. In this study, high entropy films consisting of five elements (FeCoNiCrAl) with columnar and nanometer-scale grains were prepared by magnetron sputtering. The high entropy film growth mechanism, including the formation of the amorphous domain, equiaxial nanocrystalline structure and columnar crystal was clarified by analyzing the microstructure in detail. Besides, the impacts of the important deposition parameters including the substrate temperature, the powder loaded in the target, and the crystal orientation of the substrate on the grain size and morphology, phase structure, crystallinity and elemental uniformity were revealed. The mechanical properties of high entropy films with various microstructure features were investigated by nanoindentation. With the optimized grain size and microstructure, the film deposited at 350 °C using a power of 100 W exhibits the highest hardness of 11.09 GPa. Our findings not only help understanding the mechanisms during the high entropy film deposition, but also provide guidance in manufacturing other novel high entropy films. View Full-Text
Keywords: high entropy film; nanocrystal; deposition mechanism; magnetron sputtering high entropy film; nanocrystal; deposition mechanism; magnetron sputtering
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MDPI and ACS Style

Liang, Y.; Wang, P.; Wang, Y.; Dai, Y.; Hu, Z.; Tranca, D.E.; Hristu, R.; Stanciu, S.G.; Toma, A.; Stanciu, G.A.; Wang, X.; Fu, E. Growth Mechanisms and the Effects of Deposition Parameters on the Structure and Properties of High Entropy Film by Magnetron Sputtering. Materials 2019, 12, 3008. https://doi.org/10.3390/ma12183008

AMA Style

Liang Y, Wang P, Wang Y, Dai Y, Hu Z, Tranca DE, Hristu R, Stanciu SG, Toma A, Stanciu GA, Wang X, Fu E. Growth Mechanisms and the Effects of Deposition Parameters on the Structure and Properties of High Entropy Film by Magnetron Sputtering. Materials. 2019; 12(18):3008. https://doi.org/10.3390/ma12183008

Chicago/Turabian Style

Liang, Yanxia, Peipei Wang, Yufei Wang, Yijia Dai, Zhaoyi Hu, Denis E. Tranca, Radu Hristu, Stefan G. Stanciu, Antonela Toma, George A. Stanciu, Xingjun Wang, and Engang Fu. 2019. "Growth Mechanisms and the Effects of Deposition Parameters on the Structure and Properties of High Entropy Film by Magnetron Sputtering" Materials 12, no. 18: 3008. https://doi.org/10.3390/ma12183008

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