کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1499540 993311 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of high-temperature aging on the fracture toughness of ytterbia-stabilized t′ zirconia
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Effect of high-temperature aging on the fracture toughness of ytterbia-stabilized t′ zirconia
چکیده انگلیسی

Dense t′ ZrO2–8 mol.% YbO1.5 candidate thermal barrier material was aged for 192 h at 1150 and 1250 °C. The high initial indentation toughness (∼87 J m−2) reduced by ∼56% in early-stage aging at both temperatures. The toughness increased gradually with aging at 1150 °C and more rapidly at 1250 °C. Precipitation of the cubic phase and its transformation to t″ during cooling was observed. Transformation toughening was activated by 192 h at 1250 °C. Ferroelastic toughening was dominant in the absence of transformation toughening.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 67, Issue 3, August 2012, Pages 285–288
نویسندگان
, ,