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Nanocrystalline GdFeO_3 via the gel-combustion process

机译:通过凝胶燃烧过程的纳米晶GdFeO_3

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摘要

Nanocrystalline GdFeO_3 powder was synthesized by a combustion technique, using glycine as the fuel and the corresponding metal nitrates as oxidants. Five different molar ratios of fuel-to-oxidant were chosen to study the effect of fuel content on the phase formation and the powder properties. The powders after calcination were characterized by x-ray diffraction (XRD) and crystallite sizes calculated by x-ray line broadening. The crystallite sizes for the phase pure products after calcination at 600 deg C were in the range 40-65 nm. The transmission electron microscopy observations clearly highlight the pronounced crystallinity for the propellant chemistry samples. The nature of the agglomerates was investigated by light scattering studies. The lattice thermal expansion behavior was also studied by high-temperature XRD.
机译:以甘氨酸为燃料,相应的金属硝酸盐为氧化剂,通过燃烧技术合成了纳米晶GdFeO_3粉末。选择了五种不同的燃料与氧化剂摩尔比,以研究燃料含量对相形成和粉末性质的影响。煅烧后的粉末通过X射线衍射(XRD)表征,微晶尺寸通过X射线线展宽计算。在600℃下煅烧后的相纯产物的微晶尺寸在40-65nm范围内。透射电子显微镜观察清楚地突出了推进剂化学样品的明显结晶度。通过光散射研究来研究附聚物的性质。还通过高温XRD研究了晶格的热膨胀行为。

著录项

  • 来源
    《Journal of Materials Research》 |2005年第10期|p.2654-2659|共6页
  • 作者

    S.V. Chavan; A.K. Tyagi;

  • 作者单位

    Applied Chemistry Division, Bhabha Atomic Research Centre Mwnbai - 490 085, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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