کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7703520 | 1496864 | 2018 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of ultrasound on silver electrodeposition: Crystalline structure modification
ترجمه فارسی عنوان
اثر اولتراسوند بر روی الکترولیز نقره: اصلاح ساختار بلوری
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
چکیده انگلیسی
An attractive possibility for influencing microstructures of electrodeposited coatings, and therefore their properties such as hardness, brightness etc. resides in the use of ultrasound. This method is particularly competitive as it may result in a reduction of chemical use, or even in the complete suppression of chemicals. This paper deals with silver coatings depending strongly on current density, with two main categories identified by X-ray diffraction: one poorly structured and the other following the [1Â 1Â 0] orientation. It is interesting to note that, while changing from still to mechanically stirred conditions, the value of the current density threshold moves from 2.5Â mAÂ cmâ2 to 5Â mAÂ cmâ2. When ultrasound is used (575Â kHz or 20Â kHz), this coating microstructure modification threshold occurs at higher current density values when coatings are produced under sonication, while agitation is kept constant. In both cases, the shift is about 15Â mAÂ cmâ2. It is noteworthy that silver electrodeposits elaborated under 20Â kHz ultrasound conditions appear to be less oriented than those obtained under high frequency conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 40, Part B, January 2018, Pages 60-71
Journal: Ultrasonics Sonochemistry - Volume 40, Part B, January 2018, Pages 60-71
نویسندگان
Aymeric Nevers, Loïc Hallez, Francis Touyeras, Jean-Yves Hihn,