کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7898851 1510137 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Polarity effects on the wettability and interfacial chemistry at Cu-YSZ interface by applying a direct current
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Polarity effects on the wettability and interfacial chemistry at Cu-YSZ interface by applying a direct current
چکیده انگلیسی
The application of a direct current, regardless of its polarity, can significantly improve the wettability of ZrO2-8 mol% Y2O3 (YSZ) by molten Cu at 1373 K, and this effect was more pronounced when YSZ was connected to cathode. The mechanisms for the wetting improvement varied with the change in the current polarity. When YSZ was connected to the cathode, the oxygen ions in the YSZ body driven by the external electric power moved to the solid-liquid interface and dissolved into liquid Cu, forming OCu clusters. As a consequence, the solid-liquid interfacial energy and liquid surface tension were greatly reduced and wettability improved. On the other hand, when YSZ was connected to anode, the improvement in the wettability was mainly driven by the formation of nonstoichiometric zirconia and metallic Zr at the interface. Nevertheless, the newly formed ZrO2 at the triple line region inhibited further spreading of liquid front.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 38, Issue 4, April 2018, Pages 1790-1795
نویسندگان
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