Study of Mechanical Properties of Electroless Nickel-Phosphorus Coatings with Influence of Surfactant on AZ91 Magnesium Alloy

Abstract:

Electroless Nickel-Phosphorus (ENi-P) coating is well-known in surface engineering techniques and is preferred in various mechanical, chemical and electronic industries view its extraordinary resistance to wear and corrosion. The paper summerizes the effect of surfactant on the mechanical properties of electroless Nickel-Phosphorus (Ni-P) alloy coating obtained from an acidic bath. The endeavor of this study is to analyse the influence of surfactant Ammonium Lauryl Sulfate (ALS) concentration on the microhardness, surface roughness and wettability of ENi-P deposit on AZ91 Mg alloy substrate. It was observed that there was significant improvement in the rate of deposition, microhardness and wettability, along with reduction in surface roughness (Ra) by addition of ALS surfactant in the chemical bath.

• Periodical: Advanced Engineering Forum (Volume 15)
• Pages: 56-63
• DOI: https://doi.org/10.4028/www.scientific.net/AEF.15.56
• Online since: February 2016
• Authors: Mohd Imran Ansari, Dinesh Singh G. Thakur
• Keywords: Electroless Ni-P Alloy Coatings, Microhardness, Surface Roughness, Surfactant (ALS), Wettability

References

[1] A. Brenner, G.E. Riddel, J. Res. Natl. Bur. Stand. 1946, 37 (1), 31.

[2] J.T. Winowlin Jappes, B. Ramamoorthy, P. Kesavan Nair, J. Mater. Process. Technol. 2005, 169, 308–313.

[3] A. Froats, T.K. Aune, D. Hawke, W. Unsworth, J. Hillis, Corrosion of magnesium and magnesium alloys, New York: ASM, 1987, 740.

[4] G.L. Makar, J. Kruger, Int. Journ. Mater. Reviews. 1993, 38 (3), 138-145.

[5] D.S. Mehta, S.H. Masood, W.Q. Song, J. Mater. Proc. Technol. 2004, 155, 1526-1531.

[6] Z. Liu, W. Gao, Surf. Coat. Technol. 2006, 200, 3553-3560.

[7] D.J. Shaw, Intr. to colloid and surface chemistry, 2nd edn., Woburn, MA, Butterworth Inc. (1978).

[8] N. M. Martyak, Chemi. Mater. 1994, 6(10), 1667–1674.

[9] R. Elansezhian, B. Ramamoorthy, P.K. Nair, Surf. Coat. Technol. 2008, 203, 709-712.

[10] J. Sudagar, J.S. Lian, Q. Jiang, Z.H. Jiang, G.Y. Li, R. Elansezhian, Prog. Organ. Coat. 2012, 74, 788-793.

[11] J. Sudagar, J. Lian, W. Sha, J. Alloys Compd. 2013, 571, 183-204.

[12] R. Elansezhian, B. Ramamoorthy, P. Kesavan Nair, J. Mater. Process. Technol. 2009, 209, 233-240.

[13] T.J. Athauda, D.S. Decker, R.R. Ozer, Mater. Lett. 2012, 67, 338–341.

[14] D. Wheeler, T. P. Moffat, G. B. McFadden, S. Coriell and D. Josell, J. Electrochem. Soc. 2004, 151, 538.