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Author:

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

Indexed by:

EI Scopus SCIE

Abstract:

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.

Keyword:

spark plasma sintering Ca2CoO5 thermoelectric properties coprecipitation method

Author Community:

  • [ 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

Reprint Author's Address:

  • 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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Source :

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN: 0925-8388

Year: 2005

Issue: 1-2

Volume: 399

Page: 64-68

6 . 2 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 53

SCOPUS Cited Count: 55

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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