Combustion of high-density CuO/Al nanothermites at elevated pressures

摘要：

　　Effect of the Al particle size, ambient pressure and polymeric additives on the burning rate characteristics of high-density CuO/Al nanoscale thermite mixtures has been investigated.It has been shown that the transition from nanoscale aluminium particles to micron scale ones leads to a fifty fold decrease in the burning rate.The burning rate of pressed CuO/Al samples appeared to be practically independent of ambient pressure up to 100 arm, whereas an addition of even small amounts of polymers resulted in both drastic decrease in the burning rate and emergence of pressure-dependent burning behavior.Combustion mechanism based on the condensed-phase heterogeneous reaction of aluminium oxidation has been proposed, with the rate-limiting stage being oxygen diffusion through Al2O3 oxygen film.

关键词： CuO/Al nanothermite burning rate combustion mechanism

作者: V.Y.EGORSHEV V.P.SINDITSKII K.K.YARTSEV

作者单位: Mendeleev University of Chemical Technology,9 Miusskaya Square,125047,Moscow,Russia

会议类型: 国际会议

会议名称: 2013 International Autumn Seminar on Propellants, Explosives and Pyrotechnics(2013国际推进剂、炸药、烟火技术秋季研讨会)

会议地点: 成都

会议语种:英文

页码: 287-290

在线出版日期: 2013-09-24（万方平台首次上网日期，不代表论文的发表时间）