Abstract
Spherical nano-Al/AP composites were produced by a drowning-out/agglomeration (D/A) process and characterized as a function of the amount of bridging liquid, agitation rate, agitation time, and time interval. Experimental data showed that the amount of bridging liquid plays an important role in agglomeration because it affects directly the content of wetted particles leading to the coalescence between them. Agitation rate and agitation time were found to have optimal points above which the agglomerates begin to collapse. In particular, an increasing number of injection time intervals of bridging liquid turned out to promote further growth of agglomerates. Thermogravimetric curves showed that decomposition of AP could be well described by the Prout–Tompkins model and the geometrical contraction model at low- and high-temperature area, respectively. Furthermore, the nano-Al/AP composites by the D/A process clearly revealed that thermal stability of AP is enhanced and the decomposition rate is increased at h...
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