Study on Arrested Reactive Milling Method Preparation of Al-CuO and Its Properties

摘要

Under the protection of argon gas, the micron Al-CuO composites were fabricated by Arrested Reactive Milling method (ARM).The morphology structure of Al-CuO composites were analyzed by scanning electron microscopy (SEM), particle size analyzer, X-ray diffraction (XRD)and the property of oxidizing reaction with air were analyzed by thermogravimetry-differential scanning calorimetry (TG-DSC).The results showed that after arrested reactive milling method process, Al-CuO composites shaped as plate morphology with uniform particle size distribution and the grain size reduced.In the air, compared with raw Al, the oxidation performance of Al-CuO composites had significantly improved and a larger exothermic peak occurred at the temperature of 1020°C.The maximum heat flow rate (Qmax) at the dominant exothermic peak of Al-CuO-O2 is larger than Al-O2 system.The heat release (△Hr) and the reaction rate is more considerable than raw Al, which implies a large improvement of ignition.And the activation energy decreased into 202 KJ/mol.The complex reaction with air performance is improved, the compound can be used as active metal materials and applied to the energetic materials.