1. Technology Center, Angang Steel Company Limited, Anshan 114009, Liaoning, China 2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Abstract：The facts of galvanizing parameters on microstructure of hot-dipped Zn-Al-Mg coated steel sheet were investigated. The surface and cross sectional microstructure of Zn-Al-Mg coating and the chemical composition and the morphology of alloy layer were analyzed by SEM and EDX. The element distribution in the depth direction of coating was analyzed by GDS. The element distribution in coating was analyzed by EPMA. The phase composition of coating were analyzed by XRD. The elements’ content in coating was explored by XPS. It is proved that the distributions of elements are asymmetry in the depth direction in coating, and zinc and magnesium is enriched in coating surface. Coating structure takes on multiphase commix, MgZn2 and pure zinc binary eutectic are the main phase and at the same time there are some zinc-rich nubby phase and a filmy alloy layer.
S. Schuerz, M. Fleischanderl, G.H. Luckeneder, et al. Corrosion behaviour of Zn–Al–Mg coated steel sheet in sodium chloride-containing environment, Corrosion Science 51 (2009) 2355–2363.
[1]
S. Schuerz, M. Fleischanderl, G.H. Luckeneder, et al. Corrosion behaviour of Zn–Al–Mg coated steel sheet in sodium chloride-containing environment, Corrosion Science 51 (2009) 2355–2363.
[2]
Jonathan Elvins , John A. Spittle , James H. Sullivan, David A. Worsley, The effect of magnesium additions on the microstructure and cut edge corrosion resistance of zinc aluminium alloy galvanised steel, Corrosion Science 50 (2008) 1650–1658.
[2]
Jonathan Elvins , John A. Spittle , James H. Sullivan, David A. Worsley, The effect of magnesium additions on the microstructure and cut edge corrosion resistance of zinc aluminium alloy galvanised steel, Corrosion Science 50 (2008) 1650–1658.
Takeshi Shimizu, Zn-Al-Mg coatings---the characteristics of “ZAM” and Development in the Future, 2010 china continuous galvanizing conference, BeiJing China, September 2010.
[4]
Takeshi Shimizu, Zn-Al-Mg coatings---the characteristics of “ZAM” and Development in the Future, 2010 china continuous galvanizing conference, BeiJing China, September 2010.
[5]
E. De Bruycker; Z. Zermout; B.C. De Cooman, Zn-Al-Mg Coatings: Thermodynamic Analysis and Microstructure Related Properties, Materials Science Forum, (0255-5476), Volume 539-543 2007, Pages 1276-1281
[5]
E. De Bruycker; Z. Zermout; B.C. De Cooman, Zn-Al-Mg Coatings: Thermodynamic Analysis and Microstructure Related Properties, Materials Science Forum, (0255-5476), Volume 539-543 2007, Pages 1276-1281
[6]
E. De Bruycker; B.-C. De Cooman; M. De Meyer, Experimental study and microstructure simulation of Zn-Al-Mg coatings, Revue de Metallurgie, (0035-1563), Volume 102, Issue 7-8, 2005, Pages 543-550
[6]
E. De Bruycker; B.-C. De Cooman; M. De Meyer, Experimental study and microstructure simulation of Zn-Al-Mg coatings, Revue de Metallurgie, (0035-1563), Volume 102, Issue 7-8, 2005, Pages 543-550
[7]
Komatsu,A.; Izutani,H. Corrosion Resistance and Protection Mechanism of Hot-dip Zn-Al-Mg AlloyCoated Steel Sheet under Accelerated Corrosion Environment, Journal of the Iron and Steel Institute of Japan, (0021-1575), Volume 86, Issue 8, 2000, Pages 36-43
[7]
Komatsu,A.; Izutani,H. Corrosion Resistance and Protection Mechanism of Hot-dip Zn-Al-Mg AlloyCoated Steel Sheet under Accelerated Corrosion Environment, Journal of the Iron and Steel Institute of Japan, (0021-1575), Volume 86, Issue 8, 2000, Pages 36-43
2013, Vol. 48 
