{"title":"Preparation and thermoelectric properties of Ca/sub 3/Co/sub 2/O/sub 6/ ceramic bulk","authors":"Q. Lu, J.X. Zhang, Y.Q. Liu, D. Liu, M.L. Zhou","doi":"10.1109/ICT.2005.1519881","DOIUrl":null,"url":null,"abstract":"Short-time solid-state reaction and spark plasma sintering method (SS-SPS) were combined to prepare single-phase polycrystalline Ca/sub 3/Co/sub 2/O/sub 6/ ceramic bulk, and effects of preparation condition and sintering technology were investigated in detail. Single-phase polycrystalline Ca/sub 3/Co/sub 2/O/sub 6/ powders with dendritic grains of about 1-3 /spl mu/m and Ca/sub 3/Co/sub 2/O/sub 6/ ceramic bulk with grain size of about 2 /spl mu/m were obtained respectively under 950/spl deg/C for 2 h in the solid reaction process and spark plasma sintering under 900/spl deg/C for 5 min. The ZT values of the polycrystalline product tend to increase sharply with increasing temperature and is 0.02 at 700/spl deg/C, it is expected to possess high conversion efficiency and is considered to be a potential candidate for use as a thermoelectric materials at high temperatures.","PeriodicalId":422400,"journal":{"name":"ICT 2005. 24th International Conference on Thermoelectrics, 2005.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2005-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ICT 2005. 24th International Conference on Thermoelectrics, 2005.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICT.2005.1519881","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Short-time solid-state reaction and spark plasma sintering method (SS-SPS) were combined to prepare single-phase polycrystalline Ca/sub 3/Co/sub 2/O/sub 6/ ceramic bulk, and effects of preparation condition and sintering technology were investigated in detail. Single-phase polycrystalline Ca/sub 3/Co/sub 2/O/sub 6/ powders with dendritic grains of about 1-3 /spl mu/m and Ca/sub 3/Co/sub 2/O/sub 6/ ceramic bulk with grain size of about 2 /spl mu/m were obtained respectively under 950/spl deg/C for 2 h in the solid reaction process and spark plasma sintering under 900/spl deg/C for 5 min. The ZT values of the polycrystalline product tend to increase sharply with increasing temperature and is 0.02 at 700/spl deg/C, it is expected to possess high conversion efficiency and is considered to be a potential candidate for use as a thermoelectric materials at high temperatures.
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