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放电等离子烧结原位制备TiC／Ti2AlC复合材料及室温力学性能评价
  • ISSN号：1002-185X
  • 期刊名称：《稀有金属材料与工程》
  • 时间：0
  • 分类：TQ174.758[化学工程—陶瓷工业;化学工程—硅酸盐工业] O614.322[理学—无机化学;理学—化学]
  • 作者机构：[1]School of Renewable Energy, North China Electric Power University, Beijing 102206, China, [2]CAS Key laboratory of Materlals for Energy Converszon, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • 相关基金：This work was supported by the National Natural Science Foundation of China （50821004 and 61076051） and the Program of Shanghai Subject Chief Scientist （09XD1404400）. Assistance by Prof. Zhang Xiulan of Insti- tute of Semiconductors, Chinese Academy of Sciences are acknowledged.
作者： 施璐[1,2], 张建峰[1], 王连军[1], 江莞[1], 陈立东[1]
关键词： 晶格热导率, VO2, 金属相, 绝缘体, 多晶, 放电等离子烧结, 温度依赖性, 转变温度, thermal conductivity, phase transformation, VO2
中文摘要：

关于 VO2 的热传导性的以前的报告越过金属绝缘体转变(MIT ) 显示出各种各样的温度依赖温度。在这个工作，多晶的 VO2 样品被 VO2 粉末的火花血浆 sintering 制作。他们的热传导性的温度依赖用激光闪光技术被调查，并且热传导性从金属阶段显示出一个重要减少趋势到绝缘体阶段。电的运输性质被调查证实到热传导性的搬运人和格子贡献。这被发现格子热电导率越过 MIT 点显著地减少了，它可以被软声子模式在 VO2 的金属阶段引起。

英文摘要：

Previous reports about the thermal conductivities of VO2 showed various temperature dependences across metal-insulator transi- tion （MIT） temperature. In this work, polycrystalline VO2 samples were fabricated by spark plasma sintering of VO2 powder. Temperature dependences of their thermal conductivities were investigated using laser flash technique, and the thermal conductiv- ity showed a significant decrease trend from metal-phase to insulator phase. Electrical transport properties were investigated to confirm both carrier and lattice contribution to the thermal conductivity. It is found that the lattice thermal conductivity decreased significantly across MIT point, which may be caused by soft phonon mode in metal phase of VO2.

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高性能无机复合能量转换材料的研究
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粉末成形与烧结技术
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期刊信息
  • 《稀有金属材料与工程》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国有色金属学会 中国材料研究学会 西北有色金属研究院
  • 主编：张平祥
  • 地址：西安市51号信箱
  • 邮编：710016
  • 邮箱：RMME@c-nin.com
  • 电话：029-86231117
  • 国际标准刊号：ISSN：1002-185X
  • 国内统一刊号：ISSN：61-1154/TG
  • 邮发代号:52-172
  • 获奖情况:
  • 首届国家期刊奖,中国优秀期刊一等奖,中国有色金属工业优秀期刊1等奖
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,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,美国科学引文索引（扩展库）,英国科学文摘数据库,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）,中国北大核心期刊（2000版）
  • 被引量:24715