Structure and Anti-Corrosion of Tri-Layer Ni-P Amorphous Alloy Coating Prepared in the Same Bath


Article Preview

A tri-layer amorphous Ni-P alloy coating was prepared in the same bath by changing the temperatures and currents, followed by heat treament. We studied the behavior of corrosion-resistance of the tri-layer coating before and after heat-treatment at 360°C for different time in the 5% NaCl solution. The result showed that: the tri-layer amorphous Ni-P coating has the excellent performance of anti-corrosion compare with single electroless or electrodeposited Ni-P amorphous coating. The performance of anti-corrosion of the coating was improved by controlling the coating’s structure and the role of electrochemical protection. After being heat-treated at 360°C for 1 hour ,the coating’s structure changed from amorphous to crystalloid and the corrosion resistance of the heat-treated coatings was higher than as-plated tri-layer Ni-P coating.



Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.




L. Q. Zhu et al., "Structure and Anti-Corrosion of Tri-Layer Ni-P Amorphous Alloy Coating Prepared in the Same Bath", Materials Science Forum, Vols. 546-549, pp. 1805-1808, 2007

Online since:

May 2007




[1] Krishniyer A, Ramasubramanian M, Popov B N and White R E: Plating and Surface Finishing. Vol. 86 (1999),P. 99.

[2] Y. Gao, Z.J. Zheng, M. Zhu and C.P. Luo: Materials Science and Engineering A . Vol. 381(2004), P. 98.

[3] Yongjiang Hou, Yaquan Wang, Wangliang Mi, Zhenhua Li, Sen Han, Zhentao Mi, Wei Wu and Enze Min: Reaction Kinetics and Catalysis Letters. Vol. 80(2003), P. 233.


[4] M.C. Garcia-Alonso, M.L. Escudero and V. Lopez: Corros. Sci. Vol. 38(1996), P. 515.

[5] X. C. Wang, W-B. Cai, W-J. Wang and H-T. Liu: Surf. Coat. Technol. Vol. 158(2003), P. 300.

[6] Paseka: Electrochim. Acta. Vol. 44(1999), P. 4551.

[7] Zhu Liqun, Zhong Qunpeng and Liu Jianhua: 49th Annual Meeting of ISE. Kitakyushu, Japan. (1998).

[8] Zallen R and Huang xun: Peking University Press. (1988), P. 90.

[9] Lu G and Zangari G: Electrochimica Acta. Vol. 47(2002), P. 2969.

[10] Tyler J M: Metal Finishing. Vol. 93(1995), P. 11.