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稀土铈对铝镁铈合金燃料热性能的影响
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华中科技大学 材料成形与模具技术国家重点实验室,华中科技大学 材料成形与模具技术国家重点实验室,华中科技大学 材料成形与模具技术国家重点实验室

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TG113

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国家自然科学NSAF联合基金资助(U1530127);国家自然科学基金项目(面上项目,重点项目,重大项目)


Effect of Rare Erath Ce on Thermal Performance of Al-Mg-Ce Alloy fuels
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State Key Laboratory of Material Processing and Die Mould Technology,Huazhong University of Science and Technology,State Key Laboratory of Material Processing and Die Mould Technology,Huazhong University of Science and Technology,State Key Laboratory of Material Processing and Die Mould Technology,Huazhong University of Science and Technology

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    摘要:

    采用熔炼法制备了Mg的质量分数15%、Ce的质量分数为0%,1%,3%和5%的Al-Mg和Al-Mg-Ce合金燃料。用XRD、DTA-TG和SEM/EDX分别表征了合金燃料的物相组成、氧化放热行为和形貌/元素分布,分析添加不同质量分数稀土Ce的合金氧化反应差异性的原因及Al-Mg-Ce合金的氧化行为。结果表明,随着Ce含量的升高,Al-Mg-Ce合金的氧化放热性能逐渐降低。稀土Ce的添加使Al-Mg-Ce合金第一个放热峰开始温度比Al-Mg合金粉低160℃左右。其中,Al-15Mg-1Ce合金粉的氧化放热焓为6413uV?s/mg,1300℃时的增重为90%,表现出更好的热性能。

    Abstract:

    Al-Ce and Al-Mg-Ce alloy fuels were prepared by melting method, which the mass fraction of Mg is 15% and the mass fraction of Ce are 0%, 1%, 3%, 5% . The phase composition, oxidation exothermic performance and appearance/element distribution of alloy fuels were characterized by XRD, TG-DTA and SEM/EDX. The reason of differences in oxidation exothermic reaction between alloys with different mass fraction of rare earth Ce and the oxidation behavior of Al-Mg-Ce alloys were analyzed. The results show that the oxidation exothermic performance of Al-Mg-Ce alloys reduces gradually with the increasing of Ce content. The first oxidation reaction temperature of Al-Mg-Ce alloy powders is about 160℃ lower than Al-Mg alloy powders due to the addition of Ce. Al-15Mg-1Ce alloy powders behave better thermal performance with the heat enthalpy of 6413uV?s/mg and weight increasing 90% at 1300℃ among them.

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易幻,蔡水洲,邹辉.稀土铈对铝镁铈合金燃料热性能的影响[J].稀有金属材料与工程,2018,47(4):1185~1191.[Yi Huan, Cai Shuizhou, Zou Hui. Effect of Rare Erath Ce on Thermal Performance of Al-Mg-Ce Alloy fuels[J]. Rare Metal Materials and Engineering,2018,47(4):1185~1191.]
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  • 收稿日期:2016-04-14
  • 最后修改日期:2016-05-24
  • 录用日期:2016-06-12
  • 在线发布日期: 2018-05-31
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