Y_2Fe_（17）N_y合金相结构稳定性研究

^Structure Stability of Y_2Fe_(17)N_y Alloy

本文分析了Ｙ＿２Ｆｅ＿（１７）Ｎ＿ｙ合金相的稳定性，用ｘ射线和高温穆斯堡尔谱进行了实验研究。结果表明：虽然Ｙ＿２Ｆｅ＿（１７）Ｎ＿ｙ合金结构比较稳定，但仍为一亚稳相，因为当温度较高时，Ｙ＿２Ｆｅ＿（１７）Ｎ＿ｙ合金将分解成更为稳定的ＹＮ化合物和α－Ｆｅ相。

The structure stability of Y_2Fe_(17) N_y al-loys has been analyzed in details, and it has beenproved by X-ray diffraction and high temperatureM.ssbauer spectroscopy experiments also. It hasbeen indicated that although the Y_2Fe_(17)N_y alloysstructure was stable at room temperature ,it was also a metastable phase and could be decomposedinto stable YN compound and α-Fe at 750K.