Morphology evolution of zinc-nickel binary alloys electrodeposited with cadmium additive
- Univ. of Hokkaido, Sapporo (Japan)
Zinc-nickel electrodeposits have been widely adopted for surface treatment of automobile body steel sheet. Cadmium additive enhances nucleation of hexagonal columnar crystals of the zinc-nickel electrodeposit. These hexagonal columnar crystals are made up of lateral growth of hexagonal plates along the (00{center_dot}1){eta}. With 30 ppm of cadmium, cadmium absorbs at active sites on the (00{center_dot}1){eta} and interferes with surface diffusion of metal atoms. This enhances nucleation and forms many hexagonal plates on the (00{center_dot}1){eta}. With 100 ppm of cadmium, not only do many hexagonal plates on the (00{center_dot}1){eta} but also fine hexagonal columnar crystals form on the {l_brace}10{center_dot}0{r_brace}{eta}. With further increase of cadmium to 200 ppm, the entire deposit becomes fine hexagonal crystals.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 131753
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 10 Vol. 142; ISSN 0013-4651; ISSN JESOAN
- Country of Publication:
- United States
- Language:
- English
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