کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1297031 973826 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrical, structural, and microstructural characterization of nanometric La0.9Sr0.1Ga0.8Mg0.2O3 − δ (LSGM) prepared by high-pressure spark plasma sintering
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Electrical, structural, and microstructural characterization of nanometric La0.9Sr0.1Ga0.8Mg0.2O3 − δ (LSGM) prepared by high-pressure spark plasma sintering
چکیده انگلیسی

The synthesis of bulk nanometric La0.9Sr0.1Ga0.8Mg0.2O3 − δ (LSGM) was investigated using the high-pressure spark plasma sintering (HP-SPS) method. The starting precursor nanopowders were synthesized by the Pechini method. Single phase, fully dense LSGM was obtained with a sintering cycle of 5 min under a uniaxial pressure of 700 MPa at sintering temperatures as low as 850 °C. This sintering temperature is several hundred degrees lower than those typically reported for LSGM materials. A considerable reduction in the final grain size of the sintered materials was consequently observed. Fully dense samples with an average grain size as low as 65 nm could be prepared by this method. Despite the short, low temperature sintering process a single phase material was obtained. Due to the small size of the constituting grains it was possible to estimate the specific grain boundary conductivity by impedance measurements.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 180, Issue 1, 16 February 2009, Pages 36–40
نویسندگان
, , , , , ,