Next Article in Journal
Numerical Analysis of Fatigue Crack Growth Path and Life Predictions for Linear Elastic Material
Next Article in Special Issue
Effects of Alloying Elements (C, Mo) on Hydrogen Assisted Cracking Behaviors of A516-65 Steels in Sour Environments
Previous Article in Journal
Tunable Young’s Moduli of Soft Composites Fabricated from Magnetorheological Materials Containing Microsized Iron Particles
Previous Article in Special Issue
Effects of Different Ions and Temperature on Corrosion Behavior of Pure Iron in Anoxic Simulated Groundwater
Article

Effects of the Combined Addition of Zn and Mg on Corrosion Behaviors of Electropainted AlSi-Based Metallic Coatings Used for Hot-Stamping Steel Sheets

1
Department of Advanced Materials Engineering, Sunchon National University, Jungang-ro, Suncheon, Jeonnam 57922, Korea
2
R&D Division, Hyundai Steel, 1480 Bukbusaneop-ro, Songak-eup, Dangjin, Chungnam 31719, Korea
*
Author to whom correspondence should be addressed.
Materials 2020, 13(15), 3379; https://doi.org/10.3390/ma13153379
Received: 8 July 2020 / Revised: 24 July 2020 / Accepted: 27 July 2020 / Published: 30 July 2020
(This article belongs to the Special Issue Corrosion and Protection of Materials)
The effects of the combined addition of Zn and Mg on the corrosion resistance of AlSi-based coating for automotive steel sheets were investigated using a variety of analytical and electrochemical techniques. The preferential dissolution of Mg and Zn from MgZn2/Mg2Si phases occurred on the AlSi-based coating that had been alloyed with a smaller portion of Zn and Mg, which contributed to the rapid surface coverage by corrosion products with a protective nature, reducing the corrosion current density. On the other hand, localized corrosion attacks caused by the selective dissolution of Mg were also observed in the AlSi-based coating with a smaller portion of Zn and Mg. Such alloying can also worsen its corrosion resistance when coated additionally with electrodeposited paint. The mechanistic reasons for these conflicting results are also discussed. View Full-Text
Keywords: hot stamping steel; AlSi-based coating; electrodeposited paint; Zn; Mg; corrosion hot stamping steel; AlSi-based coating; electrodeposited paint; Zn; Mg; corrosion
Show Figures

Graphical abstract

MDPI and ACS Style

Kim, S.O.; Yang, W.S.; Kim, S.J. Effects of the Combined Addition of Zn and Mg on Corrosion Behaviors of Electropainted AlSi-Based Metallic Coatings Used for Hot-Stamping Steel Sheets. Materials 2020, 13, 3379. https://doi.org/10.3390/ma13153379

AMA Style

Kim SO, Yang WS, Kim SJ. Effects of the Combined Addition of Zn and Mg on Corrosion Behaviors of Electropainted AlSi-Based Metallic Coatings Used for Hot-Stamping Steel Sheets. Materials. 2020; 13(15):3379. https://doi.org/10.3390/ma13153379

Chicago/Turabian Style

Kim, Si O., Won S. Yang, and Sung J. Kim. 2020. "Effects of the Combined Addition of Zn and Mg on Corrosion Behaviors of Electropainted AlSi-Based Metallic Coatings Used for Hot-Stamping Steel Sheets" Materials 13, no. 15: 3379. https://doi.org/10.3390/ma13153379

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop