کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7887820 | 1509792 | 2018 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-temperature thermoelectric properties of Sm3+-doped Ca3Co4O9+δ fabricated by spark plasma sintering
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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: High-temperature thermoelectric properties of Sm3+-doped Ca3Co4O9+δ fabricated by spark plasma sintering High-temperature thermoelectric properties of Sm3+-doped Ca3Co4O9+δ fabricated by spark plasma sintering](/preview/png/7887820.png)
چکیده انگلیسی
Ca3-xSmxCo4O9+δ (0 ⤠x ⤠0.3) samples were fabricated by the sol-gel method followed by spark plasma sintering in vacuum. The high-temperature thermoelectric properties of the Ca3-xSmxCo4O9+δ were also studied, with an emphasis placed on the partial substitution of Sm3+ for Ca2+. The sintered Ca3-xSmxCo4O9+δ formed a monoclinic Ca3Co4O9 phase and exhibited fine lamellar grains and dense morphology. With increased Sm3+ content, the electrical and thermal conductivities decreased, whereas the Seebeck coefficient significantly increased. Of the prepared samples, Ca2.7Sm0.3Co4O9+δ had the largest dimensionless figure-of-merit (0.175) at 800 °C. The results showed that the partial substitution of Sm3+ for Ca2+ in Ca3Co4O9+δ is effective for enhancing its thermoelectric properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 6, 15 April 2018, Pages 6376-6383
Journal: Ceramics International - Volume 44, Issue 6, 15 April 2018, Pages 6376-6383
نویسندگان
J.S. Cha, S.-M. Choi, G.H. Kim, S.-J. Kim, K. Park,