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Alloying and Processing Effects on the Aqueous Corrosion Behavior of High-Entropy Alloys

by 1, 1, 1,2 and 1,*
1
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA
2
Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN 37996, USA
*
Author to whom correspondence should be addressed.
Entropy 2014, 16(2), 895-911; https://doi.org/10.3390/e16020895
Received: 24 September 2013 / Revised: 9 January 2014 / Accepted: 5 February 2014 / Published: 14 February 2014
(This article belongs to the Special Issue High Entropy Alloys)
The effects of metallurgical factors on the aqueous corrosion behavior of high-entropy alloys (HEAs) are reviewed in this article. Alloying (e.g., Al and Cu) and processing (e.g., heat treatments) effects on the aqueous corrosion behavior of HEAs, including passive film formation, galvanic corrosion, and pitting corrosion, are discussed in detail. Corrosion rates of HEAs are calculated using electrochemical measurements and the weight-loss method. Available experimental corrosion data of HEAs in two common solutions [sulfuric acid (0.5 M H2SO4) and salt water (3.5 weight percent, wt.%, NaCl)], such as the corrosion potential (Ecorr), corrosion current density (icorr), pitting potential (Epit), and passive region (ΔE), are summarized and compared with conventional corrosion-resistant alloys. Possible directions of future work on the corrosion behavior of HEAs are suggested. View Full-Text
Keywords: high-entropy alloy; aqueous corrosion; sulfuric acid; salt water; alloying; heat treatment high-entropy alloy; aqueous corrosion; sulfuric acid; salt water; alloying; heat treatment
MDPI and ACS Style

Tang, Z.; Huang, L.; He, W.; Liaw, P.K. Alloying and Processing Effects on the Aqueous Corrosion Behavior of High-Entropy Alloys. Entropy 2014, 16, 895-911.

AMA Style

Tang Z, Huang L, He W, Liaw PK. Alloying and Processing Effects on the Aqueous Corrosion Behavior of High-Entropy Alloys. Entropy. 2014; 16(2):895-911.

Chicago/Turabian Style

Tang, Zhi; Huang, Lu; He, Wei; Liaw, Peter K. 2014. "Alloying and Processing Effects on the Aqueous Corrosion Behavior of High-Entropy Alloys" Entropy 16, no. 2: 895-911.

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