کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1599563 | 1005106 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
INFLUENCE OF SILICON IN STEELS ON GALVANIZED COATINGS
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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![عکس صفحه اول مقاله: INFLUENCE OF SILICON IN STEELS ON GALVANIZED COATINGS INFLUENCE OF SILICON IN STEELS ON GALVANIZED COATINGS](/preview/png/1599563.png)
چکیده انگلیسی
After steel sheets (0.37wt%Si) pre-electroplated with a thin layer of pure Fe were immersed in molten zinc for various time, the change in the microstructure of the galvanized coating on the steel and the change of α-Fe/Πinterface were studied. The EDS (energy dispersive sepectroscopy) results show that excessive silicon accumulates on the surface of the steel substrate due to the low solubility of silicon in the Πlayer after the Fe layer is depleted by the increasing growth of the compound layers. With the movement of α-Fe/Πinterface towards the substrate by the Fe/Zn reaction, silicon-rich α-Fe peels off from the substrate and breaks into particles. The particles, much like an inert marker in a Kirkendall effect experiment, move towards the δ layer through the Πlayer because silicon-rich α-Fe can not be adsorbed in the Πlayer. On reaching the δ/Πinterface, the particles quickly dissolve in the δ layer, and accelerate its growth, resulting in the gradual disappearance of the Πlayer. At the same time, the normal coating is quickly changed into coatings typical of reactive steels as silicon dissolved in the δ layer soon diffuses toward the ζ layer. A similar process may happen in the initial stage of galvanizing reactive steels on a small scale, although it is hard to be observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Metallurgica Sinica (English Letters) - Volume 19, Issue 2, April 2006, Pages 85-90
Journal: Acta Metallurgica Sinica (English Letters) - Volume 19, Issue 2, April 2006, Pages 85-90
نویسندگان
C.S. Che, J.T. Lu, G. Kong, Q.Y. Xu, J.H. Chen,