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熔融旋甩制备Ce_（0.8）Fe_（4-x）Ni_xSb_（12）方钴矿的热电性能研究
  • ISSN号：1001-9731
  • 期刊名称：《功能材料》
  • 时间：0
  • 分类：O482.6[理学—固体物理;理学—物理]
  • 作者机构：[1]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070
  • 相关基金：国家重点基础研究发展计划(973计划)资助项目(2007CB607501);国家自然科学基金重点资助项目(50731006)
作者： 谭刚健[1], 鄢永高[1], 李涵[1], 苏贤礼[1], 唐新峰[1]
关键词： 熔融旋甩, 方钴矿, 热导率, 热电性能, melt spinning, skutterudite, thermal conductivity, thermoelectric property
中文摘要：

采用熔融旋甩（MS）技术结合放电等离子烧结（SPS）工艺制备了方钴矿化合物Ce0.8Fe4-xNixSb12（x=0～0.15）,并对样品进行了相组成及微观结构分析和热电性能表征。研究结果表明,所有样品均为单相且呈P型传导。Ni对Fe进行取代后,电导率有一定程度下降,但Seebeck系数得到显著提高。然而由于Ni取代同时导致了载流子热导的降低以及合金化散射引起晶格热导率减小而使其总热导率大幅度下降。其中,x=0.05和x=0.10样品在800K时最大无量纲热电优值均达到0.73,相比于参比样Ce0.8Fe4Sb12提高了约18%。

英文摘要：

Single-phase skutterudite compounds with highly relative density Ce0.8 Fe4-x NixSb12 （x= 0-0.15） were prepared by combining melt spinning technique with spark plasma sintering. Their phase structure, microstructure and thermoelectric properties were investigated. The result reveals that all samples show p-type conduc- tion. When Fe was substituted by Ni, the electrical properties can be reduced to some extent, but the total thermal conductivity is decreased more evidently due to the reduction of ke caused by decreased carrier concentration and kL caused by alloying scattering. The maximum ZT value of about 0.73 is obtained at 800K for the x= 0. 05 and x=0. 10 samples, which was 18% higher than that of x=0 sample.

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高性能热电材料的非平衡态制备科学和电声输运协调
期刊论文 148 获奖 2 专利 10
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期刊信息
  • 《功能材料》
  • 北大核心期刊（2011版）
  • 主管单位:重庆材料研究院
  • 主办单位:重庆材料研究院
  • 主编：黄伯云
  • 地址：重庆北碚区蔡家工业园嘉德大道8号
  • 邮编：400707
  • 邮箱：gnclwb@126.com
  • 电话：023-68264739
  • 国际标准刊号：ISSN：1001-9731
  • 国内统一刊号：ISSN：50-1099/TH
  • 邮发代号:78-6
  • 获奖情况:
  • 2008、2011年连续获中国精品科技期刊,2010获重庆市双十佳期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:30166