کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6607958 459539 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ultrasound assisted electrodeposition of Zn and Zn-TiO2 coatings
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Ultrasound assisted electrodeposition of Zn and Zn-TiO2 coatings
چکیده انگلیسی
Pristine Zn and Zn-TiO2 coatings were galvanostatically electrodeposited on steel substrates from additive-free chloride-based plating baths under silent and ultrasonic conditions. An ultrasonic bath-setup (38 kHz) was used as a sonoelectrochemical system. The influence of ultrasonic irradiation on the layer properties was investigated using different combinations of ultrasonic power and current density. In general, the use of ultrasonic irradiation for assisting the electrodeposition of pristine Zn and Zn-TiO2 layers does have impact on the morphological and structural properties of the electrodeposits. The use of ultrasonic irradiation for dispersing particles during the electro-codeposition process was shown to be beneficial provided the use of suitable ultrasonic and deposition parameters. The incorporation of particles into the metallic matrix was confirmed with glow discharge optical emission spectroscopy investigations and focused-ion-beam-assisted cross-sectional analysis. The presence of TiO2 agglomerates having smaller sizes as well as a better distribution in the metallic matrix was observed for the combination of ultrasonic agitation and high-speed electrodeposition. Pyramidal textures corresponding to the (101), (102), (103) and (112) planes were found characteristic for Zn layers having incorporated TiO2 particles. One aspect of using ultrasonic agitation during electroplating is that Zn layers might also be prone to cavitation/erosion phenomena. Nevertheless, this effect can be controlled by adjusting the ultrasonic power as well as the ultrasonic irradiation time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 198, 20 April 2016, Pages 287-295
نویسندگان
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