کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6617623 | 459635 | 2013 | 46 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural, magnetic, and mechanical properties of electrodeposited cobalt-tungsten alloys: Intrinsic and extrinsic interdependencies
ترجمه فارسی عنوان
خواص ساختاری، مغناطیسی و مکانیکی آلیاژهای کبالت-تنگستن الکترودهایی: وابستگی های درونی و بیرونی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
The mapping of structural, magnetic, and mechanical properties of Co-W coatings galvanostatically electrodeposited from a citrate-borate bath is investigated. The intrinsic characteristics of the coatings, such as crystallite size or tungsten content are correlated with the extrinsic growth parameters, such as pH, complexes distribution, and current density. The increase in pH from 5 to 8 results in an increase of the W content in the deposits from 2Â at.% up to 36Â at.% in a controlled way, and it correlates with an increase in concentration of W(VI) complexes in the bath. The crystallite size estimated from XRD patterns, decreases from 39 to 5Â nm with increasing W content from 3 to 25Â at.% respectively. The obtained coatings show highly tunable mechanical and magnetic properties. The hardness increases with W content from â¼3Â GPa up to â¼13Â GPa. A semi-hard ferromagnetic behavior with a coercivity of â¼470Â Oe along the perpendicular-to-plane direction is observed for Co-W alloys containing small amounts of W in the range of â¼2-3Â at.%. At higher tungsten contents the coatings are magnetically softer, and the electrodeposits become non-ferromagnetic beyond â¼30Â at.% W. Because of this combination of physical properties, electrodeposited Co-W coatings may become suitable materials for multi-scale technologies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 104, 1 August 2013, Pages 94-103
Journal: Electrochimica Acta - Volume 104, 1 August 2013, Pages 94-103
نویسندگان
N. Tsyntsaru, H. Cesiulis, E. Pellicer, J.-P. Celis, J. Sort,