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2009 , Vol. 24 >Issue 5: 1045 - 1048

DOI: https://doi.org/10.3724/SP.J.1077.2009.01045

研究论文

葡萄糖基碳包覆ZnFeO的合成及其红外发射率研究

  • 周建华 ,
  • 王 涛 ,
  • 王道军 ,
  • 何建平
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  • (南京航空航天大学 材料科学与技术学院, 南京 210016)

收稿日期: 2008-12-23

  修回日期: 2009-02-18

  网络出版日期: 2009-09-20

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Preparation and Infrared Emissivity of Glucose-based Carbon Coated ZnFeO

  • ZHOU Jian-Hua ,
  • WANG Tao ,
  • WANG Dao-Jun ,
  • HE Jian-Ping
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  • (College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

Received date: 2008-12-23

  Revised date: 2009-02-18

  Online published: 2009-09-20

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摘要

为抑制锌铁氧体在8～14μm频段的红外发射, 以水热合成的ZnFeO粒子为种子, 进一步在葡萄糖溶液中水热合成了高分散性的碳包覆ZnFeO复合材料. 借助于TEM、红外和紫外光谱技术, 证实形成了葡萄糖基碳包覆ZnFeO的核壳结构. 500℃热处理后包覆层碳化程度提高, 但内核仍为氧化物. 而1000℃时内核发生碳热还原反应, 形成了石墨层包覆Fe纳米晶的结构. 8～14μm频段的发射率测试结果表明：葡萄糖基碳包覆样品在未经热处理时平均红外发射率降低至0.5以下, 500℃热处理后平均红外发射率最低可至0.353, 拓宽了锌铁氧体的隐身频段.

关键词： 水热合成; 碳包覆; 锌铁氧体; 红外发射率

本文引用格式

周建华 , 王 涛 , 王道军 , 何建平 . 葡萄糖基碳包覆ZnFeO的合成及其红外发射率研究[J]. 无机材料学报, 2009 , 24(5) : 1045 -1048 . DOI: 10.3724/SP.J.1077.2009.01045

Abstract

To restrain the infrared emission of zinc ferrite in 8-14μm wave band, highly dispersed carbon coated ZnFeO nanocomposites were obtained from glucose solution under hydrothermal conditions, where ZnFeO particles prepared firstly in a simple hydrothermal route was used as the seeds. It was proved to be a core-shell structure of glucose-based carbon coated ZnFeO particles by transmission electron microscope (TEM), fourier transform infrared (FT-IR), and UV-Vis technologies. After heat-treated at 500℃, the carbonization degree of the coating is improved, but the core is still oxide. Whereas the core takes place a carbothermal reduction at 1000℃, it finally yields a structure with a graphite layer coated Fe nanocrystals. The infrared emissivity tests in 8-14μm waveband show that it can be lowered to 0.5 by the glucose-based carbon coating without the heat treatment. After heat-treated at 500℃, it lowers the average infrared emissivity further to 0.353, which will expand the stealth band of zinc ferrite.

Key words： hydrothermal synthesis; carbon coating; zinc ferrite; infrared emissivity

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