کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7886650 | 1509786 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and thermophysics properties of ferroelastic SmNb1-XTaXO4 ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Monoclinic phase SmNb1-XTaXO4 ceramics are synthesized via solid-state reaction. X-ray diffraction and Raman spectra are applied to characterize the crystal structure. The ferroelasticity of SmNb1-XTaXO4 ceramics is confirmed by the domain structure observed via scanning electron microscopy. The band gap of SmNb1-XTaXO4 ceramics ranges from 4.3 to 5.0â¯eV and they exhibit excellent absorption for UV light. Thermophysics properties including specific heat, thermal diffusivity, thermal conductivity and thermal expansion coefficients of SmNb1-XTaXO4 ceramics are investigated systematically. The result shows that the thermal conductivity of SmNb1-XTaXO4 ceramics is as low as 1.33â¯Wâ¯mâ1 Kâ1 (900â¯Â°C) and the thermal expansion coefficients are as high as 11.7â¯Ãâ¯10â6 Kâ1 (1200â¯Â°C). The unique ferroelasticity and outstanding thermophysics properties indicate that SmNb1-XTaXO4 ceramics are promising thermal barrier coating materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 12, 15 August 2018, Pages 13999-14006
Journal: Ceramics International - Volume 44, Issue 12, 15 August 2018, Pages 13999-14006
نویسندگان
Yinyi Luo, Lin Chen, Peng Wu, Peng Song, Jing Feng,