关键词: 催化剂;推进剂燃烧;燃烧速率;推进剂压力指数

Abstract: By using high-ptessure DTA,time-of-fight mass spectrometer, sandwich burning and deteimination of steadystate burning, the catalyti-cal mechanism of AP decomposition is investigated with two different addition means, and different content of catalysts. It is found that AP decomposite mechanism changs from eletron transfer to the simultaneous transfer of both eletron and proton. It is also found that catalytical effect increases with increasing the interface of AP and catalysts. Therefore, it can be concluded that catalysis occurs mainly at the surface of AP crystalline grain.

Key words: Catalyst;Propellant combustion;Burning rate;Propellant pressure exponent