کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7898067 | 1510131 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of microstructure on electrical and mechanical properties of La5.4WO12-δ proton conductor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of microstructure on electrical and mechanical properties of La5.4WO12-δ proton conductor Effect of microstructure on electrical and mechanical properties of La5.4WO12-δ proton conductor](/preview/png/7898067.png)
چکیده انگلیسی
The relationships between microstructural characteristics and electrical as well as mechanical properties of La5.4WO12-δ (LWO54) materials were studied. Polycrystalline LWO54 samples revealed identical transport mechanisms regardless of the sample microstructure. The studied samples show predominately proton conductor behaviour below 800â¯Â°C and become predominant n-type and oxygen ion conductors above this temperature. The magnitude of the total conductivity is enhanced with larger grain size and lower porosity. Young's modulus decreased by 20% with increasing temperature up to 1000â¯Â°C regardless of grain size and atmosphere. Fracture strength was determined via ring-on-ring bending tests, yielding values that strongly depended on microstructural characteristics and homogeneity of the microstructure. Elevated temperature deformation studies revealed that creep is governed by cation diffusion mechanism.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 38, Issue 10, August 2018, Pages 3527-3538
Journal: Journal of the European Ceramic Society - Volume 38, Issue 10, August 2018, Pages 3527-3538
نویسندگان
Wendelin Deibert, Vasiliki Stournari, Mariya E. Ivanova, Sonia Escolástico, José M. Serra, Jürgen Malzbender, Tilmann Beck, Lorenz Singheiser, Olivier Guillon, Wilhelm A. Meulenberg,