Effects of substrate temperature and deposition time on the morphology and corrosion resistance of FeCoCrNiMo<sub>0.3</sub> high-entropy alloy coating fabricated by magnetron sputtering

Chun-duo Dai; Yu Fu; Jia-xiang Guo; Cui-wei Du

doi:10.1007/s12613-020-2149-2

Volume 27 Issue 10

Oct. 2020

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2020 > 27(10): 1388-1397

Chun-duo Dai, Yu Fu, Jia-xiang Guo, and Cui-wei Du, Effects of substrate temperature and deposition time on the morphology and corrosion resistance of FeCoCrNiMo_0.3 high-entropy alloy coating fabricated by magnetron sputtering, Int. J. Miner. Metall. Mater., 27(2020), No. 10, pp. 1388-1397. https://doi.org/10.1007/s12613-020-2149-2

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Chun-duo Dai, Yu Fu, Jia-xiang Guo, and Cui-wei Du, Effects of substrate temperature and deposition time on the morphology and corrosion resistance of FeCoCrNiMo0.3 high-entropy alloy coating fabricated by magnetron sputtering, Int. J. Miner. Metall. Mater., 27(2020), No. 10, pp. 1388-1397. https://doi.org/10.1007/s12613-020-2149-2

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Research Article

Effects of substrate temperature and deposition time on the morphology and corrosion resistance of FeCoCrNiMo_0.3 high-entropy alloy coating fabricated by magnetron sputtering

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Corresponding author:
Cui-wei Du E-mail: dcw@ustb.edu.cn
Received: 6 May 2020; Revised: 20 July 2020; Accepted: 21 July 2020; Available online: 24 July 2020

Abstract

Abstract

The effects of substrate temperature and deposition time on the morphology and corrosion resistance of FeCoCrNiMo_0.3 coating fabricated by magnetron sputtering were investigated by scanning electron microscopy and electrochemical tests. The FeCoCrNiMo_0.3 coating was mainly composed of the face-centered cubic phase. High substrate temperature promoted the densification of the coating, and the pitting resistance and protective ability of the coating in 3.5wt% NaCl solution was thus improved. When the deposition time was prolonged at 500°C, the thickness of the coating remarkably increased. Meanwhile, the pitting resistance improved as the deposition time increased from 1 to 3 h; however, further improvement could not be obtained for the coating sputtered for 5 h. Overall, the pitting resistance of the FeCoCrNiMo_0.3 coating sputtered at 500°C for 3 h exceeds those of most of the reported high-entropy alloy coatings.
- high-entropy alloy coating;
- magnetron sputtering;
- microstructure;
- corrosion

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