کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1449946 988718 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low-temperature transformation kinetics of electron-beam deposited 5 wt.% yttria-stabilized zirconia
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Low-temperature transformation kinetics of electron-beam deposited 5 wt.% yttria-stabilized zirconia
چکیده انگلیسی

The transformation kinetics of ZrO2 coatings stabilized with 5.6 mol% YO1.5 (5YSZ), and deposited by electron-beam physical vapor deposition, were studied between room temperature and 600 °C using in situ Raman spectroscopy, and are described in the form of a transformation-time–temperature diagram. The coatings were found to be monoclinic (m) at temperatures below 375 °C, while above 400 °C they transformed to the tetragonal (t) phase. On cooling, the coatings transformed back to monoclinic below ∼375 °C. Between 375 and 400 °C, the transformation rates approached zero, indicating that the thermodynamic driving force for the transformation also approaches zero in this temperature range. This provides a direct measurement of the T0(m–t) temperature for the 5YSZ composition.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 55, Issue 6, April 2007, Pages 2049–2055
نویسندگان
, ,