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首页> 外文期刊>Journal of Thermal Analysis and Calorimetry >Synthesis and characterization of LnFeO3 pigments
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Synthesis and characterization of LnFeO3 pigments

机译:LnFeO3 颜料的合成与表征

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This work is focused on determination of the optimum firing temperature which leads to formation of the compounds LnFeO3 with good pigment-application properties (Ln=Gd, La, Yb, Tm, Lu). Based on results of thermal analysis the compounds were prepared by the solid-state reaction at temperature 900 and 1000°C. Colours of pigments vary depending on type of used lanthanoid (from light sienna to dark brown) and also on the type of precursor. Generally, the compounds prepared from iron oxide have more interesting color properties. Colour of these compounds is brighter and deeper. Increasing of the calcination temperature from 900 to 1000°C causes the darkening of colour. The most problably, the darkening is connected with partial reduction of Fe3+ to Fe2+.
机译:这项工作的重点是确定最佳焙烧温度,从而导致形成具有良好颜料应用性能(Ln = Gd,La,Yb,Tm,Lu)的化合物LnFeO3 。基于热分析的结果,通过在900和1000°C的温度下进行固相反应来制备化合物。颜料的颜色取决于所用镧系元素的类型(从浅色到深棕色)以及前体的类型也不同。通常,由氧化铁制备的化合物具有更令人感兴趣的颜色特性。这些化合物的颜色更亮,更深。煅烧温度从900℃升高到1000℃会导致颜色变深。最可能的是,变黑与Fe3 + 部分还原为Fe2 + 有关。

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