A sulphate bath for the preparation of Zn-Fe alloy coatings

作者：Yang, CQ; Long, ZL; Zhou, YC^*

来源：Transactions of the Institute of Metal Finishing, 2002, 80: 161-163.

DOI：10.1080/00202967.2002.11871459

• Zn-Fe alloy coatings
• sulphate solutions
• electrodeposition

A new acidic sulphate bath was developed for the preparation of Zn-Fe alloy coatings. The percentage of iron in the deposits produced was measured by atomic absorption spectrophotometry and was found to be below 1.0 wt%. The bath composition was easy to control and when citric acid and sodium citrate were employed as buffer and complexing agents, respectively, stable pH values were observed In addition, the operation cost was low and the cathode efficiency was high with respect to the alkaline baths. The Zn-Fe alloy coatings produced were fine and iridescent and no pinholes or pores could be observed over the surface. The percentage of iron in the alloy coatings increased with the increase of metal ratio Fe2+/Zn2- and the applied current density. Bend tests indicated that the alloy coatings had good adhesion strength to the substrate.

• 出版日期2002-9
• 单位湘潭大学