کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624195 | 989584 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of nano-titania (η-TiO2) content on the mechano-physical properties of a magnesia refractory composite
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The mechano-physical properties of a sintered magnesia matrix containing 0-8 wt% nano-titania (η-TiO2) have been investigated. The crystalline phases and microstructure characteristics of the refractory specimens sintered by solid state at 1500 °C for 4 h in an electric furnace were studied by X-ray diffraction (XRD), and scanning electron microscopy (SEM) with microanalysis (EDS), respectively. The physical properties are reported in terms of density and porosity. The mechanical behavior was evaluated by a cold crushing strength (CCS) test. As a result, it was found that the presence of η-TiO2 in the magnesia matrix induced titanates formation (Mg2TiO4 and CaTiO3), which improved the sintering process. Nano-titania also produced a fine-grained microstructure with intergranular second phase particles, which remain at the boundary and exert a pinning effect. In general, the addition of 5 wt% of η-TiO2 contributed to reach a maximum increment in physical and mechanical properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 7, 15 May 2016, Pages 8445-8452
Journal: Ceramics International - Volume 42, Issue 7, 15 May 2016, Pages 8445-8452
نویسندگان
Eden RodrÃguez, F.H. Moreno, J.A. Aguilar-MartÃnez, A.E. Montes-MejÃa, J.J. Ruiz-Valdés, Rodrigo Puente-Ornelas, J.E. Contreras,