| 添加物对Fe_2O_3超微粒的稳定作用 |
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| 引用本文： | 孙彤,沈瑜生,刘勇.添加物对Fe_2O_3超微粒的稳定作用[J].无机材料学报,1994(1). |
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| 作者姓名： | 孙彤 沈瑜生 刘勇 |
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| 作者单位： | 中国科技大学材料系 |
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| 摘 要： | 粒子的尺寸直接关系着气敏元件性能的好坏．为了防止Ｆｅ２Ｏ３超微粒在气敏元件烧结过程中长大，我们在纯Ｆｅ２Ｏ３中掺入５ｍｏｌ％碱土金属离子，利用ＸＲＤ和ＴＥＭ系统研究了掺杂物对Ｆｅ２Ｏ３超微粒子的稳定作用，并对由掺杂引起的Ｆｅ２Ｏ３电学性质的变化作了初步探讨．
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| 关 键 词： | 添加物，二氧化二铁，稳定作用，超微粒 |
The Stabilization of Ultrafine Powder of Fe_2O_3 due to Additives |
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| Sun Tong,Shen Yusheng,Liu Yong.The Stabilization of Ultrafine Powder of Fe_2O_3 due to Additives[J].Journal of Inorganic Materials,1994(1). |
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| Authors: | Sun Tong Shen Yusheng Liu Yong |
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| Abstract: | The size of powder had direct effect on the material sensitivity. In order to prevent ultrafine panicals Of Fe2O3 from growing larger during sintering process, alkaline earth metal ions were doped into pure Fe2O3 system to the extent of 5mol%. XRD and TEM were employed to investigate their stabilization.As a result, it was found that the electrical conductance of Fe2O3 system had been changed. A model was proposed to interprete this change and a satisfactory explanation was obtained. The curves of conductance-temperature also verified the reasonableness of the model. |
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| Keywords: | Additive Iron oxide Stabilization Ultrafine powder |
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