【摘要】 研究了用自蔓延高温合成工艺制备碱土金属氮化物Ｍｇ＿３Ｎ＿２。研究表明燃烧反应温度与氮气压力、稀释剂含量之间存在不同于其他气，固体系的关系规律：燃烧反应最高温度随稀释剂含量增加、氮气压力降低而表现出明显升高。氮气的渗透性在自蔓延高温合成Ｍｇ＿３Ｎ＿２过程中起重要作用。更多还原

【Abstract】 Self-propagating high-temperature synthesis （SHS） of Mg₃N₂ is investigated.It is found that the dependence of the combustion temperature on the nitrogen pressure and the amount of diluent during combustion synthesis of Mg₃N₂ is different from that of other solid-gas systems. The maxmium combustion temperature shows a significant increase with the increase of the amount of diluent while decrease with the in-crease of nitrogen pressure. It is concluded that the nitrogen permeability plays an important role in the SHS of Mg₃N₂.更多还原