CAJ | 학술논문

为了探索在水冲压发动机中高金属含量铝/镁合金水反应金属燃料的稳态燃烧，开展了其一次燃烧和二次燃烧实验研究，其中铝/镁合金含量达到80%。采用氧弹量热仪收集一次燃烧固相产物，并将一次燃烧固相产物置于水蒸气高温管式炉中模拟二次燃烧。采用TGA对铝、镁和铝/镁合金进行了热性能分析，并采用XRD，SEM及化学分析方法对铝/镁合金和推进剂的一、二次燃烧固相产物进行了表征。结果表明，铝/镁合金的启动氧化温度530℃优于镁的600℃，铝/镁合金在第二阶段的氧化性能优于铝的。铝/镁合金为Mg17Al12，一次燃烧固相产物中主要存在MgAl，Mg2Al3，MgAl2等合金相和MgO，在二次燃烧的固相产物中有MgO，Al和Al2MgO4，其中剩余Al的含量随着管式炉温度增大先增大后减小。分析认为铝/镁合金在燃烧过程中镁先行发生了反应，而后其中的铝才发生反应。
위료탐색재수충압발동궤중고금속함량려/미합금수반응금속연료적은태연소，개전료기일차연소화이차연소실험연구，기중려/미합금함량체도80%。채용양탄량열의수집일차연소고상산물，병장일차연소고상산물치우수증기고온관식로중모의이차연소。채용TGA대려、미화려/미합금진행료열성능분석，병채용XRD，SEM급화학분석방법대려/미합금화추진제적일、이차연소고상산물진행료표정。결과표명，려/미합금적계동양화온도530℃우우미적600℃，려/미합금재제이계단적양화성능우우려적。려/미합금위Mg17Al12，일차연소고상산물중주요존재MgAl，Mg2Al3，MgAl2등합금상화MgO，재이차연소적고상산물중유MgO，Al화Al2MgO4，기중잉여Al적함량수착관식로온도증대선증대후감소。분석인위려/미합금재연소과정중미선행발생료반응，이후기중적려재발생반응。
In order to explore the steady-state combustion of high-metal Al-Mg alloy hydro-reactive metal fuels for water ramjet engines,experiments were conducted to study the primary combustion and the secondary combustion of propellant with the Al-Mg alloy content 80%.Oxygen bomb calorimeter was used to collect the sol?id products of primary combustion.The secondary combustion was simulated in the high temperature tube furnace by using the solid products of primary combustion and water vapor.Thermal performance of Al,Mg and Al-Mg al?loy was analyzed by thermogravimetric analysis(TGA).The solid products were characterized by using scanning electron microscopy(SEM),x-ray diffraction(XRD),chemical analysis method.TGA traces in air indicate that the oxidation onset temperature(530℃)of Al-Mg alloy powders is lower than that(600℃)of Mg and the oxida?tion performance of Al-Mg alloy powders is better than that of Al in case II.There were MgO,MgAl,Mg2Al3, MgAl2 produced by Mg17Al12 in the primary combustion. There were MgO,Al and Al2MgO4 in the products of sec?ondary combustion.The content of residual aluminum increases with the increasing of temperature of the tube fur?nace,and then decreases.It is thought that the combustion of magnesium in Al-Mg alloy occurs first and the com?bustion of aluminum happens later.