期刊
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
卷 26, 期 1, 页码 82-86出版社
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/S1005-0302(10)60013-8
关键词
Electroplating; Grain size; Nanocrystalline; Coating
资金
- University of Tehran and Razi University
In order to achieve the optimum conditions for electroplating nanocrystalline nickel coating from Watts-type bath, the effect of some process parameters namely, bath temperature, current density, and saccharin addition on grain size and texture coefficient (TC= I-(200)/I-(111)) of the deposits were investigated by X-ray diffraction (XRD). The results showed that in a bath containing 5 g/L saccharin, by increasing the bath temperature from 45 degrees C to 55 degrees C, the grain size decreased, whereas further increase of bath temperature resulted in a contrary effect. By increasing the current density from 10 to 75 mA/cm(2), both the grain size and TC decreased, while further increase in current density had no significant effect on the grain size. At a given current density, the grain size and TC decreased rapidly by increasing the saccharin content before leveling off at 3 g/L of saccharin. Finally, based on the grain refining the optimum conditions for producing nanocrystalline nickel coating from Watts-type bath have been proposed.
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