Abstract
Pulse plating Zn-Fe (6.0 wt%–7.4 wt%) deposits have been studied by means of X-ray diffraction. The results showed that pulse current parameters affected not only the textures of the deposits but also their phase constitutions. Under the condition of average current density of 6 A/dm 2 in pulse plating, when pulse frequency was larger than or equal to 100 Hz, the Zn-Fe deposits were identified as h.c.p. η-phase; if pulse frequency was less than or equal to 1 Hz, the Zn-Fe deposits were of η- and monoclinic ζ-phases. At constant average current density and pulse frequency, an increase of the duty cycle results in an increase of the (101) texture coefficient of the Zn-Fe deposits, while the decrease of the duty cycle favoured the formation of a deposit with (112) texture. A Zn-Fe deposit with (112) highly preferred orientation was obtained.
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