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采用脉冲放电技术合成Ni-P合金粉体,研究了合金粉体的结构及其对高氯酸铵热分解的影响.结果表明,非晶态Ni-P合金粉体是由微粒组成的团聚结构.脉冲放电电压700、900和1100V对应的弦粒子数依次增大,粉体粒径依次减小,分别为350～500、250～400和150～300nm.Ni-P合金粉体促进高氯酸铵的低温和高温热分解,与纯高氯酸铵相比,高氯酸铵和Ni-P粉体混合物的第1放热峰(低温分解峰)温度降低幅度小于12℃,第2放热峰(高温分解峰)温度降低约53℃;合金粉体粒径减小,第1放热峰强度增强,第2放热峰强度减弱,低温分解失重从高氯酸铵的15.97%增加到42.78%,高温分解失重从81.62%降低到47.58%,高温分解结束时温度的降低幅度为26～43℃.
The pulsed discharge technique was used to synthesize Ni-P alloy powders, the structure of the alloy powder and its effect on the thermal decomposition of ammonium perchlorate were investigated. The results show that the amorphous Ni-P alloy powders are agglomerates composed of fine particles The chord number of particles corresponding to 700, 900 and 1100V impulse increases in turn, and the particle size decreases in turn, which are 350 ~ 500, 250 ~ 400 and 150 ~ 300nm, respectively.Ni-P alloy powder promotes perchloric acid Ammonium low temperature and high temperature thermal decomposition, compared with pure ammonium perchlorate, ammonium perchlorate and Ni-P powder mixture first exothermic peak (low temperature decomposition peak) temperature decrease of less than 12 ℃, the second exothermic The temperature of peak (pyrolysis peak) decreased by about 53 ℃. The particle size of the alloy powder decreased, the intensity of the first exothermic peak increased and the intensity of the second exothermic peak decreased. The weight loss of low temperature decomposition increased from 15.97% of ammonium perchlorate to 42.78 %, The weight loss at high temperature decomposition decreased from 81.62% to 47.58%, and the temperature decrease at the end of pyrolysis was 26 ~ 43 ℃.