Thermal Reactivity and Combustion Performances of Al/Ti-based Nano-composite Fuels

Sulan YANG; Haorui ZHANG; Hongqi NIE; Qilong YAN

doi:10.12382/bgxb.2022.0132

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Thermal Reactivity and Combustion Performances of Al/Ti-based Nano-composite Fuels

更新时间：2025-08-18

- Thermal Reactivity and Combustion Performances of Al/Ti-based Nano-composite Fuels
- Acta Armamentarii Vol. 44, Issue 4, Pages: 1118-1125(2023)
- 作者机构：
  
  西北工业大学燃烧、热结构与内流场重点实验室, 陕西西安 710072
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2022.0132
  CLC：
- Received：04 March 2022，
  
  Published Online：25 July 2023，
  
  Published：28 April 2023
- 稿件说明：
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Sulan YANG, Haorui ZHANG, Hongqi NIE, et al. Thermal Reactivity and Combustion Performances of Al/Ti-based Nano-composite Fuels[J]. Acta Armamentarii, 2023, 44(4): 1118-1125.
DOI：

Sulan YANG, Haorui ZHANG, Hongqi NIE, et al. Thermal Reactivity and Combustion Performances of Al/Ti-based Nano-composite Fuels[J]. Acta Armamentarii, 2023, 44(4): 1118-1125. DOI： 10.12382/bgxb.2022.0132.

摘要

为有效促进Al/Ti金属间反应

利用高能球磨法制备Al/Ti@AP/NC和Al/Ti@PVDF/CL-20两种核壳型复合燃料。采用扫描电子显微镜评估复合颗粒的包覆效果

利用综合热分析仪研究复合燃料的热反应性能

通过氧弹燃烧仪测试复合燃料的能量性能

借助综合燃烧诊断系统研究复合燃料的燃烧特性

利用扫描电子显微镜和X射线衍射仪研究Al/Ti基复合燃料燃烧产物的形貌及成分。研究结果表明:采用高能球磨法可使含能复合物均匀包覆在Al/Ti表面;Al/Ti的加入促进了含能复合物分解

同时含能复合物包覆增强了Al/Ti金属间反应、提高了燃料的火焰传播速度和燃烧波温度;尤其是采用AP/NC含能复合物为包覆层的复合燃料

其火焰传播速度(246.6mm/s)较相同配方未包覆含能复合物的Al/Ti(23.5 m/s)增加了9.5倍

燃烧波温度(1703.2℃)较Al/Ti(1069.3℃)提高了59.3%。复合燃料凝聚相燃烧产物成分取决于包覆物元素组成

凝聚相燃烧产物主要

包含AlTi

C和Ti(O

0.19

0.53

0.32

)

表明在燃烧过程中Al/Ti与含能复合物发生了化学反应。

Abstract

To effectively promote the intermetallic reaction between Al and Ti

two types of core-shell structured nanocomposite fuels have been prepared by using the high-energy ball milling method

namely Al/Ti@AP/NC and Al/Ti@PVDF/CL-20. The quality of the coating layers of AP/NC and PVDF/CL-20 on the surface of Al/Ti is inspected by scanning electron microscopy (SEM). The thermal reactivity

heat of reaction and combustion performances of Al/Ti-based composite fuels are evaluated by DSC/TG thermal analyses

a bomb calorimeter

and a customized combustion diagnostic system. The morphologies and compositions of the condensed combustion products (CCPs) are characterized by SEM and X-ray diffraction (XRD) techniques

respectively. Results show that the core-shell structured Al/Ti@AP/NC and Al/Ti@PVDF/CL-20 could be obtained by high-energy ball milling method. The thermal decomposition of the energetic composites is enhanced with the introduction of Al/Ti. Furthermore

the intermetallic reaction between Al and Ti

burning rate

and the combustion wave temperature could be enhanced with the inclusions of AP/NC or PVDF/CL-20. In particular

for the composite fuel coated with AP/NC

the burning rate (246.6mm·s

-1

) is increased by 9.5 times and the combustion wave temperature (1703.2℃) is 59.3% higher compared to that of pure Al/Ti (the burning rate and combustion wave temperature are 23.5mm·s

-1

and 1069.3℃

respectively). The compositions of the CCPs depend on the types of energetic coating layers

which are dominated with AlTi

C and Ti(O

0.19

0.53

0.32

)

indicating that chemical reactions occur between Al/Ti and energetic composites during the combustion process.

关键词

Keywords

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