Low-temperature transformation kinetics of electron-beam deposited 5 wt.% yttria-stabilized zirconia
作者： Vanni Lughi , David R. Clarke
DOI: 10.1016/J.ACTAMAT.2006.11.007
关键词: Atmospheric temperature range 、 Monoclinic crystal system 、 Materials science 、 Yttria-stabilized zirconia 、 Tetragonal crystal system 、 Analytical chemistry 、 Phase (matter) 、 Kinetics 、 Physical vapor deposition 、 Raman spectroscopy
摘要: Abstract 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 600 °C using in situ Raman spectroscopy, are described the form a transformation-time–temperature diagram. found to be monoclinic (m) at temperatures below 375 °C, while above 400 °C they transformed tetragonal (t) phase. On cooling, back ∼375 °C. Between 375 400 °C, rates approached zero, indicating that thermodynamic driving force for also approaches zero this range. This provides direct measurement T0(m–t) 5YSZ composition.
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