کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7886051 | 1509785 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and characterization of novel nonstoichiometric magnesium aluminate spinels
ترجمه فارسی عنوان
تهیه و مشخص کردن اسپینل های آلومینات منیزیم جدید غیر استئشیومتری
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
Magnesium aluminate spinel is of great importance for nuclear industry, and its structure, showing a great impact on properties, is sensitive to the composition. In order to explore the stoichiometric effect on structure and properties of spinels, several different spinel compositions with MgO·nAl2O3 (nâ¯=â¯0.5-2.4) were synthesized via solid state reaction. Synthetic samples were characterized by X-ray diffraction, scanning electron microscope and nanoindentation tests. The results of XRD and SEM indicate that the single-phase magnesia alumina spinels have been prepared successfully for the first time ranging from nâ¯=â¯0.667 to nâ¯=â¯1.5, which is beyond the previous reported ranges of n⥠0.91. The hardness and modulus decrease with increasing n, implying further that the nonstoichiometric spinel crystal structures are likely to exhibit superior mechanical properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 13, September 2018, Pages 15104-15109
Journal: Ceramics International - Volume 44, Issue 13, September 2018, Pages 15104-15109
نویسندگان
Yudong Li, Dongyan Yang, Chenguang Liu, Pan Yang, Pengcheng Mu, Juan Wen, Shuangqiang Chen, Yuhong Li,