Energy analysis of high-energy combustion agents with different particle sizes
By preparing high-energy combustion agents with 9 different combinations of aluminum powder and boron powder with different particle sizes,and using experiments including infrared thermography,underwater explosion,detonation velocity measurement and scanning electron microscopy,the influence of particle size difference on the energy characteristics of high-energy combustion agents was investigated.The results showed that when the aluminum powder with a particle size of 1 μm was combined with the boron powder with a parti-cle size of 500 nm,the peak combustion temperature was the highest,reaching 1 310.9 ℃.Underwater explo-sion also reached the maximum peak pressure of 0.476 MPa in the same particle size combination.In addition,with this particle size combination,the highest detonation velocity of 431 m/s was also achieved.Scanning elec-tron microscopy revealed that the high-energy combustion agent made from 1 μm aluminum powder,500 nm boron powder,and potassium nitrate was relatively uniformly dispersed after ultrasonic agitation,but there was some agglomeration.The research results are helpful for optimizing the formulation design of high-energy com-bustion agents.
国家科技期刊平台
NSTL
万方数据
维普
