Al3Zr/Al复合燃料的热性能研究

doi:10.12677/MS.2018.84034

期刊菜单

Al₃Zr/Al复合燃料的热性能研究
Study on Thermal Properties of Al₃Zr/Al Composite Fuels

DOI: 10.12677/MS.2018.84034, PDF, 国家自然科学基金支持
作者: 石文, 邹辉, 蔡水洲：华中科技大学材料成形与模具技术国家重点实验室，湖北武汉
关键词: Al₃Zr/Al复合燃料；热性质；非自耗电弧熔炼；紧耦合气雾化；非选择性氧化；Al₃Zr/Al Composite Fuels； Thermal Properties； Non-Consumable Arc-Melting Technique； Close-Coupled Gas-Atomization； Non-Selective Oxidation

摘要: 为研究Al₃Zr/Al复合燃料热性质的影响，本文采用非自耗电弧熔炼技术以及紧耦合气雾化法制备了Al₃Zr/Al复合燃料，并通过激光粒度仪、XRD、SEM和热分析对复合粉末的粒径、物相、形貌、结构以及热性质做了表征。结果表明，Al₃Zr/Al复合燃料主要物相组成为Al和Al₃Zr。锆的加入使得Al₃Zr/Al复合燃料的内部形成了金属间化合物Al₃Zr内嵌到铝基体的特殊结构。Al₃Zr/Al复合燃料的特殊结构以及Al₃Zr的非选择性氧化促进了Al₃Zr/Al复合燃料的氧化。TG-DTA结果表明Al₃Zr/Al复合燃料与纯铝粉相比，放热更加集中，放热温度更加提前，表现出更强的热反应活性。此外，本文还对Al₃Zr/Al复合燃料的氧化过程和氧化机理进行了探讨。

Abstract: In order to study on thermal properties of Al₃Zr/Al composite fuels, Al₃Zr/Al composite fuels were prepared by non-consumable arc-melting technique and close-coupled gas-atomization. The laser particle size analyzer, X-ray diffraction, electron microscopy and thermal analysis were used to characterize particle size distribution, phase composition, structure, morphology and oxidation process of the composite powders, respectively. The results showed that the phase composition of Al₃Zr/Al composite fuels is mainly consists of Al and Al₃Zr. The addition of Zr made a special structure that intermetallic compound Al₃Zr is embedded in the Al matrix form in the interior of Al₃Zr/Al composite fuels. The special structure and non-selective oxidation of Al₃Zr/Al composite fuels played a key role in oxidation process. The results of TG-DTA showed that, compared with pure Al powders, Al₃Zr/Al composite fuels had more intensive heat release and lower exothermic temperature, showing a stronger thermal reactivity. In addition, the oxidation process and oxida-tion mechanism of Al₃Zr/Al composite fuels were discussed.

文章引用：石文, 邹辉, 蔡水洲. Al₃Zr/Al复合燃料的热性能研究[J]. 材料科学, 2018, 8(4): 305-314. https://doi.org/10.12677/MS.2018.84034

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