Ridder, Geeske (2020) The effect of Mg concentration on the microstructure, mechanical properties and corrosion resistance of physical vapor deposited ZnMg coatings. Integration Project, Industrial Engineering and Management.
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Abstract
In this research, physical vapor deposition was employed to deposit single layer pure Zn and bi-layered ZnMg-Zn coatings onto the steel substrate. The effect of Mg concentration was then investigated on the icrostructure, mechanical properties and corrosion resistance of the coatings. . It was found that the phase content of the ZnMg layer changes with increased Mg concentration from the ductile pure Zn phase to brittle intermetallic Mg2Zn11 and MgZn2 phases. Accordingly, the hardness and elastic modulus, and thus the coatings resistance to plastic deformation, increase with increased Mg concentration. It was also shown that the adhesion strength of the coatings at the ZnMg/Zn interface decreases with increasing Mg concentration. Lastly, the corrosion resistance of the coating was evaluated. Physical Vapor Deposition (PVD) was shown to be favorable in the case of coatings corrosion resistance over the currently used Hot Dip Galvanizing (HDG). Besides this, ZnMg coatings showed great corrosion resistance compared to commercially applied coatings due to the formation of a thin and dense layer of corrosion products.
| Item Type: | Thesis (Integration Project) |
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| Supervisor name: | Pei, Y. and Sabooni, S. and Geertsema, A.A. |
| Degree programme: | Industrial Engineering and Management |
| Thesis type: | Integration Project |
| Language: | English |
| Date Deposited: | 01 Jul 2020 11:14 |
| Last Modified: | 01 Jul 2020 11:14 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/22349 |
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