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利用固气反应原理和方法制备ＦｅＮ化合物．反应气氛为ＮＨ３，Ｈ２，［Ｎ］和［Ｈ］的混合物．分析了ＮＨ３的分解过程及［Ｎ］和Ｆｅ的反应．当ＮＨ３／［ＮＨ３＋Ｈ２］的比例为５％～１５％（体积百分数）和反应温度为６４０～６８０℃时，通过水淬或冰水淬可得到几乎纯净的体状γＦｅ（Ｎ）．当ＮＨ３／［ＮＨ３＋Ｈ２］为１６％～５０％和反应温度为４００～６４０℃时，均匀、单一且纯的Ｆｅ４Ｎ体状化合物可以得到．研究了工艺条件对制备氮化物的影响规律．结果表明：γＦｅ（Ｎ）是非磁性的，Ｆｅ４Ｎ是铁磁性的．其饱和磁化强度、居里温度和矫顽力室温下分别为１８６Ａ·ｍ２／ｋｇ，４８０℃和０３９ｋＡ／ｍ．
The solid-gas reaction principle and method for preparing Fe N compounds. The reaction atmosphere is a mixture of NH3, H2, [N] and [H]. The decomposition of NH3 and the reaction of [N] with Fe were analyzed. When the ratio of NH3 / [NH3 + H2] is 5% ~ 15% (volume fraction) and the reaction temperature is 640 ~ 680 ℃, almost pure body γFe (N) can be obtained by water quenching or ice water quenching. When NH3 / [NH3 + H2] is 16% ~ 50% and the reaction temperature is 400 ~ 640 ℃, a homogeneous, pure and pure Fe4N-like compound can be obtained. The influence of technological conditions on the preparation of nitrides was studied. The results show that: γ Fe (N) is non-magnetic, Fe4N is ferromagnetic. The saturation magnetization, Curie temperature and coercivity at room temperature were 186A · m2 / kg, 480 ℃ and 0 39kA / m.