کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1474918 991105 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructures and mechanical properties of Ce1−xCaxO2−y (x = 0.05, 0.1, 0.2) with different sintering temperatures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Microstructures and mechanical properties of Ce1−xCaxO2−y (x = 0.05, 0.1, 0.2) with different sintering temperatures
چکیده انگلیسی

In this study, the microstructures and mechanical properties of Ca-doped CeO2 affected by different sintering temperatures and various dopant concentrations have been systematically investigated. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) revealed that a seemingly individual Ca-doped CeO2 system may consist of multiple types of doped CeO2 phases. X-ray photoelectron spectroscopy (XPS) analysis demonstrated that the chemical state of the Ce element is less dependent on the sintering temperature, while increasing the sintering temperature may cause segregation of the Ca elements to form CaO phase. Nanoindentation tests showed that Ca-doped CeO2 has better fracture toughness compared to rare-earth (RE) doped CeO2; the relationship between the sintering temperature and the mechanical property has been discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 30, Issue 3, February 2010, Pages 669–675
نویسندگان
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