Mathematical model of combustion synthesis
Mathematical model of combustion synthesis
复制标题
燃烧合成数学模型
DOI：
10.1002/aic.690440317
复制
发表时间：
1998
期刊：
影响因子：
3.7
通讯作者：
J. Yagi
中科院分区：
文献类型：
--
作者：
T. Akiyama;Hiromichi Isogai;J. Yagi
以镁镍合成为例，对燃烧合成的数学模型进行了理论和实验研究。通过反映从镁镍混合物的起始原料到金属间化合物产物的热物性的剧烈变化，建立了一个非稳态的二维数学模型，并测量了熔化前后的固相反应速率。为了在实验上验证该模型，对压缩粉末圆柱形样品的一端进行了加热，并监测了样品的局部温度。当模型将共析相的部分熔化效应考虑到基本方程中时，计算温度和测量温度的比较显示出似乎是一致的。
Mathematical modeling of the combustion synthesis was studied theoretically and experimentally by taking Mg2Ni synthesis as an example. An unsteady two-dimensional mathematical model was constructed by reflecting drastic changes in thermo-physical properties from starting material of magnesium nickel mixture to a product of inter-metallic compound and measured solid-phase reaction rate with/without melting. For validating the model experimentally, an end of the cylindrical sample of compressive powders was heated, and local temperatures of the sample were monitored. The comparison between calculated and measured temperatures showed plausible agreement when the model took partial melting effect of a eutectoid phase into the fundamental equations.