A mechanically assisted electroless (MAE) barrel-plating technique has been developed to deposit Ni-P coatings on carbon steel. The mechanical treatment was carried out in a rolling drum containing carbon steel specimens and glass balls of 2-3 mm diameter, which was submerged in a bath containing electroless plating solution. The coatings are Ni-polycrystalline and have a fine grained structure and smooth surfaces. The hardness and corrosion resistance of the novel coatings are considerably improved compared with the conventional electroless (CE)-plated Ni-P coatings, which are amorphous. After heat treatment at 4000C for one hour, cracks and pores are observed in the CE-plated Ni-P coating, while no cracks appear in the MAE barrel-plated Ni-P coating. The improved properties of the MAE barrel-plated Ni-P coatings demonstrate the advantages of this novel technique, wide applications of which will be found in industries.
参考文献
| [1] | Y.Z. Zhang;M. Yao .Studies of electroless nickel deposits with low phosphorus content[J].Transactions of the Institute of Metal Finishing,1999(3):78-83. |
| [2] | J.Y. Song;J. Yu .Residual stress measurements in electroless plated Ni-P films[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2002(1/2):167-172. |
| [3] | Z. Guo;K.G. Keong;W. Sha .Crystallisation and phase transformation behaviour of electroless nickel phosphorus platings during continuous heating[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2003(1/2):112-119. |
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