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作者:

Zhang, YF (Zhang, YF.) (学者:张跃飞) | Zhang, JX (Zhang, JX.) (学者:张久兴) | Lu, QM (Lu, QM.)

收录:

EI Scopus SCIE

摘要:

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 degrees C for 5 min using the precursor powders calcined at 700-850 degrees 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 degrees C. At 700 degrees C, the electrical resistivity, Seebeck coefficient, thermal conductivity and figure of merit of the sample are 9.30 x 10(-5) Omega m, 178 mu V/K, 1.55 W/mK and 0.21, respectively. (c) 2005 Elsevier B.V. All rights reserved.

关键词:

Ca2CoO5 coprecipitation method spark plasma sintering thermoelectric properties

作者机构:

  • [ 1 ] Beijing Univ Technol, Minist Educ, Key Lab Adv Funct Mat, Beijing 100022, Peoples R China
  • [ 2 ] Hebei Normal Univ, Coll Chem, Shijiazhunag 050016, Peoples R China

通讯作者信息:

  • 张久兴

    [Zhang, JX]Beijing Univ Technol, Minist Educ, Key Lab Adv Funct Mat, 100 Ping Le Yuan,Chaoyang Dist, Beijing 100022, Peoples R China

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来源 :

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN: 0925-8388

年份: 2005

期: 1-2

卷: 399

页码: 64-68

6 . 2 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

JCR分区:1

被引次数:

WoS核心集被引频次: 52

SCOPUS被引频次: 53

ESI高被引论文在榜: 0 展开所有

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