کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803487 | 1516468 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rapid synthesis of Ca2Co2O5 textured ceramics by coprecipitation method and spark plasma sintering
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Rapid synthesis of Ca2Co2O5 textured ceramics by coprecipitation method and spark plasma sintering Rapid synthesis of Ca2Co2O5 textured ceramics by coprecipitation method and spark plasma sintering](/preview/png/9803487.png)
چکیده انگلیسی
Ca2Co2O5 textured ceramics were rapidly prepared by a coprecipitation method and spark plasma sintering (SPS) using cobalt and calcium nitrates as starting materials and sodium hydroxide as precipitant. Single phase Ca2Co2O5 ceramics can be obtained by SPS at 800 °C for 5 min using the precursor powders calcined at 700-850° C for 2 h. It is critical to obtain stochiometric precursor by controlling the final pH 13.2 during the coprecipitation process. The SPS process is effective in obtaining single phase Ca2Co2O5 ceramics. The thermoelectric properties of the prepared sample were investigated from 100 to 700 °C. At 700 °C, the electrical resistivity, Seebeck coefficient, thermal conductivity and figure of merit of the sample are 9.30 Ã 10â5 Ω m, 178 μV/K, 1.55 W/mK and 0.21, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 399, Issues 1â2, 16 August 2005, Pages 64-68
Journal: Journal of Alloys and Compounds - Volume 399, Issues 1â2, 16 August 2005, Pages 64-68
نویسندگان
Yanfeng Zhang, Jiuxing Zhang, Qingmei Lu,