金属间化合物
点火系统
燃烧
非阻塞I/O
壳体(结构)
反应性(心理学)
纳米复合材料
自燃温度
材料科学
复合材料
化学工程
化学
热力学
物理
工程类
有机化学
合金
医学
替代医学
病理
催化作用
作者
Su-Lan Yang,Minghui Yu,Wei He,Hongqi Nie,Qi‐Long Yan
标识
DOI:10.1016/j.combustflame.2022.112555
摘要
In this paper, three nanocomposite fuels (Al/[email protected]) including Al/[email protected], Al/[email protected] and Al/[email protected] have been fabricated by a spray-drying technique. Their morphology, heat of reaction, ignition and combustion performances, as well as their condensed combustion products (CCPs) have been comprehensively investigated. The results suggested that the core-shell structured Al/[email protected] has lower ignition delay and better combustion performances comparing to the corresponding mechanically mixed ones. The promoted thermal reactivity could be attributed to resulted intimate reactants contacts with shortened heat and mass transfer distance. Furthermore, the reactivity of Ti is higher than that of Co and Ni, so that a much more violent chemical reaction occurred for the Ti-containing composites, and thereby the combustion wave temperature was increased to 2136.6 °C and the particle size of the corresponding CCPs was reduced to as low as 170 nm. Moreover, the compositions of CCPs for Al/Ti/AP and Al/[email protected] are quite different. The typical CCPs phases for Al/[email protected] are dominated with AlxTMyOz and Al5O6N, whereas the CCPs of the other samples are dominated with transition metals oxides such as Co3O4, NiO and TiO2 depending on the type of transition metals involved.
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