一、前言在某些不锈钢和高温合金中发现一种三元的复杂氮化物Z相,其化学式是CrNbN,具有四方点阵。但是对其点阵常数有的认为α=6.784■,或4.283■,有的认为α=3.037■。我们得到的FeNiCrWMoNb合金晶界Z相的电子衍射花样,需对P.Ettmayer所给出的Z相的单胞进行修正后才能得到解释。根据P.Ettmayer所给出的Z相的单胞和原子坐标,修正了Z相的单胞,确定了单胞中的原子位置。由之计算了Z相的晶面的结构振幅值。以电子衍射花样分析实例证明 I. Preface In some stainless steels and superalloys, a ternary complex nitrides phase Z was found with a chemical formula of CrNbN and a tetragonal lattice. However, for some lattice constants, α = 6.784 Å, or 4.283 Å, while others consider α = 3.037 Å. The electron diffraction pattern of the Z-phase of the grain boundary of FeNiCrWMoNb alloy that we obtained is to be corrected only after the unit cell of Z phase given by P. Ettmayer is corrected. According to the unit cell and atomic coordinates of the Z phase given by P. Ettmayer, the unit cell of the Z phase is modified and the position of the atom in the unit cell is determined. The amplitude of the crystal structure of the Z phase is calculated. An example of electronic diffraction pattern analysis