Abstract The ignition and onset melting temperatures, surface morphologies before and after ignition, as well as combustion products of Mg-xAl (x = 0, 3, 6 and 8 wt.%) alloys were investigated. The results demonstrate that ignition process of Mg-xAl alloys in this research, take to be pyrolysis/gasification and piloted ignition of pyrolysis volatiles. Besides, Mg-0Al and Mg-3Al alloys gasification mainly occur in solid state and burning occur in the solid state. Whereas Mg-6Al and Mg-8Al alloys gasification mainly occur in liquid state, and burning also occur in the liquid state. So with Al content increase, burning occurred state changes from solid to liquid.

中文翻译：

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了解Mg-xAl (x=0, 3, 6 and 8wt. %)合金在大气环境中的点火机理

摘要 研究了 Mg-xAl (x = 0, 3, 6 和 8 wt.%) 合金的点火和起始熔化温度、点火前后的表面形貌以及燃烧产物。结果表明，本研究中Mg-xAl合金的点火过程为热解/气化和热解挥发物的先导点火。此外，Mg-0Al和Mg-3Al合金气化主要发生在固态，燃烧发生在固态。而Mg-6Al和Mg-8Al合金气化主要发生在液态，燃烧也发生在液态。所以随着Al含量的增加，燃烧发生的状态由固态转变为液态。