کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1475445 | 991119 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Welding of yttrium-doped zirconia granules by electric current activated sintering (ECAS): Protrusion formation as a possible intermediate step in the consolidation mechanism
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The basic mechanisms of the current activated/assisted sintering (ECAS) of yttrium-doped zirconia's currently is a controversial issue. To gather more experimental data, we performed two-electrode-experiments (2EE) on staked spherical granules of cubic yttria-stabilised zirconia (YSZ) of diameters ranging from 10 to 100 μm. The observations were focused on the initial welding stage, under currents smaller than 4 A cm−2. The impedance spectroscopy appears to be a sensitive technique to detect the very early welding stage. FEG-SEM analysis reveals protrusion formations at the granule surfaces which are probable intermediate microstructures in the neck formation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 32, Issue 8, July 2012, Pages 1473–1479
Journal: Journal of the European Ceramic Society - Volume 32, Issue 8, July 2012, Pages 1473–1479
نویسندگان
Anne Cordier, Michel Kleitz, Marlu César Steil,