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首页> 外文期刊>Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems >Studies on the ageing of a magnesium-potassium nitrate pyrotechnic composition using isothermal heat flow calorimetry and thermal analysis techniques
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Studies on the ageing of a magnesium-potassium nitrate pyrotechnic composition using isothermal heat flow calorimetry and thermal analysis techniques

机译：等温热流法和热分析技术研究硝酸镁钾烟火组合物的时效

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摘要

The ageing behaviour of a pyrotechnic mixture of magnesium and potassium nitrate has been followed at 50degreesC and 65% relative humidity by isothermal heat flow calorimetry. Measurements have been carried out with samples in air and in an inert atmosphere. The main reaction product was found to be magnesium hydroxide. This has been determined quantitatively by thermogravimetry and the amount formed correlated with the measured cumulative heat of ageing. The results have been compared with those obtained for magnesium powder studied under the same conditions. In addition the influence of the ageing process on the pyrotechnic reaction has been studied by high temperature differential scanning calorimetry under ignition conditions and modulated temperature differential scanning calorimetry. (C) 2003 Published by Elsevier Science B.V. [References: 6]
机译：通过等温热流量法在50℃和65％相对湿度下跟踪了镁和硝酸钾的烟火混合物的老化行为。已经在空气和惰性气氛中对样品进行了测量。发现主要反应产物是氢氧化镁。这已经通过热重量法定量确定，并且形成的量与测得的老化累积热相关。将结果与在相同条件下研究的镁粉的结果进行了比较。此外，还通过在点火条件下的高温差示扫描量热法和调制温度差示扫描量热法研究了老化过程对烟火反应的影响。 （C）2003年由Elsevier Science B.V.出版[参考文献：6]

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