Effect of Ca Element on Microstructure and Corrosion Behavior of Single-Phase Mg–Sc Alloy

Cheng Zhang; Cheng Peng; Jin Huang; Yanchun Zhao; Tingzhuang Han; Guangang Wang; Liang Wu; Guangsheng Huang

doi:10.3390/met12010093

Metals (Jan 2022)

Effect of Ca Element on Microstructure and Corrosion Behavior of Single-Phase Mg–Sc Alloy

Cheng Zhang,
Cheng Peng,
Jin Huang,
Yanchun Zhao,
Tingzhuang Han,
Guangang Wang,
Liang Wu,
Guangsheng Huang

Affiliations

Cheng Zhang: School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, “The Belt and Road (B&R)” International Joint Research Laboratory of Sustainable Materials, Southwest University, Chongqing 400715, China
Cheng Peng: The Key Laboratory of Chongqing Inorganic Special Functional Materials, Yangtze Normal University, Chongqing 408100, China
Jin Huang: School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, “The Belt and Road (B&R)” International Joint Research Laboratory of Sustainable Materials, Southwest University, Chongqing 400715, China
Yanchun Zhao: The Key Laboratory of Chongqing Inorganic Special Functional Materials, Yangtze Normal University, Chongqing 408100, China
Tingzhuang Han: State Key Laboratory of Solidification Processing, School of Materials Science & Engineering, Northwestern Polytechnical University, Xi’an 710072, China
Guangang Wang: State Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Liang Wu: State Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Guangsheng Huang: State Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China

DOI: https://doi.org/10.3390/met12010093
Journal volume & issue: Vol. 12, no. 1
p. 93

Abstract

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The effect of Ca on the microstructure and corrosion behavior of a single-phase Mg–Sc alloy was investigated. The microstructure was characterized by optical microscopy and scanning electron microscopy. Corrosion behavior was measured by hydrogen evolution tests and electrochemical measurements. With the addition of microalloyed Ca, the grain size of Mg-0.3Sc alloy is refined and the Mg2Ca phase particle is precipitated. The corrosion test results reveal that the addition of microalloyed Ca is beneficial to the corrosion resistance of Mg-0.3Sc single-phase alloy, which is related to the grain refinement and the protective performance of the corrosion product film. As the content of Ca increases, the corrosion resistance of the alloy first increases and then decreases, which is mainly related to the microstructure of the alloy.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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