Redox behaviour of iron bearing glass fibres during heat treatment under atmospheric conditions
Redox behaviour of iron bearing glass fibres during heat treatment under atmospheric conditions
复制标题
含铁玻璃纤维在大气条件下热处理过程中的氧化还原行为
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
S. Mørup
中科院分区：
文献类型：
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作者：
Lise Frank Kirkegaard;Martin Korsgaard;Y. Yue;S. Mørup
对含铁铝硅酸盐玻璃纤维在空气中的玻璃化过渡区进行了系统的预氧化实验。预氧化纤维在同步热分析仪中向上扫描到大气条件下1273 K的温度，以测量质量的增加，这是亚铁氧化为三铁的结果。基于穆斯堡尔光谱测量。已经提出了一种方法来计算铁的氧化还原状态从纤维质量的增加。已经发现纤维的氧化还原状态与预氧化温度和预氧化时间之间的定量关系。这些关系可以通过了解热处理条件来预测纤维的氧化程度，反之亦然。
Systematic pre-oxidation experiments in the glass transition region have been carried out on iron bearing aluminosilicate glass fibres in air. The pre-oxidized fibres are up-scanned in a simultaneous thermal analyser to a temperature of 1273 K under atmospheric conditions in order to measure the increase in mass, which is a consequence of the oxidation of ferrous iron to ferric iron. Based on the Mossbauer spectroscopic measurements. an approach has been proposed to calculate the redox state of the iron from the increase in mass of the fibres. The quantitative relationships have been found between the redox state of the fibres and both the pre-oxidation temperature and the pre-oxidation duration. These relationships can be used to predict the degree of oxidation of the fibres by knowing the heat treatment conditions and vice versa.