کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1660107 | 1008396 | 2009 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrodeposition and characterization of Zn-Mn alloy coatings obtained from a chloride-based acidic bath containing ammonium thiocyanate as an additive
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The electrodeposition of Zn-Mn alloys was performed using a chloride-based acidic bath containing ammonium thiocyanate (NH4SCN) as an additive. An electrochemical study using cyclic voltammetry (CV), performed for each of the metal ions (Zn(II) and Mn(II)), showed that neither metal ion forms complexes with NH3, and that Mn(II) but not Zn(II) forms complexes with SCNâ. The influence of NH4SCN on the morphology, composition and crystallographic structure of the electrodeposited Zn-Mn alloys was studied using scanning electron microscopy (SEM), glow discharge spectroscopy (GDS) and X-ray diffraction (XRD). The results show that the presence of NH4SCN in the solution induces an increase in the Mn content of the alloy, from 3% in the Zn-Mn alloy obtained in the absence of additive to 6.2% in the alloy obtained in the presence of additive. In addition, the presence of NH4SCN favors the formation of coatings comprised of a mixture of ε-phase Zn-Mn(002) + α-phase Zn-Mn(111) alloys. These coatings were compact and smooth and exhibited a lower corrosion rate compared to the coatings obtained in the absence of NH4SCN, which where comprised of a mixture of Zn, ε-phase Zn-Mn and α-phase Zn-Mn alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 203, Issue 9, 25 January 2009, Pages 1167-1175
Journal: Surface and Coatings Technology - Volume 203, Issue 9, 25 January 2009, Pages 1167-1175
نویسندگان
P. DÃaz-Arista, Z.I. Ortiz, H. Ruiz, R. Ortega, Y. Meas, G. Trejo,