Surface characterization of zincated aluminium and selected alloys at the early stage of the autocatalytic electroless nickel immersion process
- 302 Downloads
- 12 Citations
Abstract
In this work the changing structure of nickel–phosphorus deposits on aluminium and its alloys at the early stage of electroless nickel phosphorus deposition using hypophosphite ion as reducing agent has been studied. Prior to electroless nickel deposition, zincating is used for pre-treatment of aluminium substrates. The surface morphology and structure of the electroless Ni–P layers were characterized by scanning electron microscopy and X-ray diffraction analysis. Results show that Ni–P deposition is closely related to the dissolution of the zincating layer, followed by progressive nickel nucleation. The nuclei serve as a catalytic surface for further Ni–P deposition which increases with deposition time. The growth and coalescence of the nuclei on the aluminium substrate results in crystalline layers of Ni–P.
Keywords
Electroless nickel–Phosphorus deposition (Ni–P) Zincating Pre-treatmentNotes
Acknowledgements
We express our gratitude to the Engineering and Physical Sciences Research Council, UK for the sponsorship of the project and Macdermid PlC for providing some of the materials and equipment used. The authors thank Prof. Craig Williams of the School of Applied Sciences, University of Wolverhampton for his support in the X-ray diffraction analysis.
References
- 1.Brenner A, Riddell GE (1946) Soc Am Electroplaters 33:23Google Scholar
- 2.Baudrand D (1979) Plat Surf Finish 66(12):14Google Scholar
- 3.Baudrand D (1999) Product Finish 63(10):80Google Scholar
- 4.Gutzeit G (1956) Trans Inst Metal Finish 33:83Google Scholar
- 5.Gutzeit G (1959) Plat Surf Finish 46:1158, 1275 and 1377Google Scholar
- 6.Gorbunova KM, Nikiforvoa AA (1963) J Electrochem Soc 110:271cCrossRefGoogle Scholar
- 7.Martyak NM (1994) J Chem Mater Sci 6:1667CrossRefGoogle Scholar
- 8.Kreye H, Muller F, Lang L, Isheim D, Hentschel T (1995) Z Metallkd (Germany) 86:184Google Scholar
- 9.Zhang YZ, Wu YY, Yao M (1997) J Mater Sci Lett 17:37CrossRefGoogle Scholar
- 10.Yamasaki T, Izumi H, Sunda H (1981) Scripta Metall 15:177CrossRefGoogle Scholar
- 11.Tyagi SVS, Tandon VK, Ray S (1986) J Mater Sci 8:433Google Scholar
- 12.Hur KH, Jeong JH, Lee DN (1990) J Mater Sci 25:2573CrossRefGoogle Scholar
- 13.Lambert MR, Duquette DJ (1989) Thin Solid films 177:207CrossRefGoogle Scholar
- 14.Teheri R (2003) Doctoral dissertation. University of Saskatchewan, Saskatoon, CanadaGoogle Scholar
- 15.Duncan RN (1996) Plat Surf Finish 83(65):31Google Scholar
- 16.Agarwala RC, Agarwala V (2003) Sadhana 28:475CrossRefGoogle Scholar
- 17.Park SH, Lee DN (1988) J Mater Sci 23:1643CrossRefGoogle Scholar
- 18.Aluminium Federation (2003) Aluminium Federation. Birmingham, UKGoogle Scholar
- 19.MacDermid plc (2000) Bondal Process, Technical Data Sheet. Birmingham, UKGoogle Scholar
- 20.MacDermid plc (2000) VAND-ALOY 6000, Technical Data Sheet Birmingham, UKGoogle Scholar
- 21.International Centre for Diffraction Data (1978) JCPDS Card Index FileGoogle Scholar
- 22.Baudrand D, Bengston J (1995) Metal Finish 93:55CrossRefGoogle Scholar
- 23.Armyanov SA (1992) Metal Finish 90:36Google Scholar
- 24.Vangelova T, Valova E, Hubnin E, Armyanov SA (2001) J Electrochem Soc Sov Electrochem 148:266Google Scholar
- 25.Golby JW (1981) Doctoral dissertation. University of Aston, Birmingham, UKGoogle Scholar
- 26.Monterio FJ, Barbosa MA (1998) Surf Coat Technol 35:321CrossRefGoogle Scholar
- 27.Monterio FJ, Barbrosa MA, Ross DH, Gabe DR (1991) Surf Interf Anal 17:519CrossRefGoogle Scholar
- 28.Pearson T (2006) Trans Inst Metal Finish 84:121CrossRefGoogle Scholar
- 29.Pearson T, Wake SJ (1997) Trans Inst Metal Finish 75:93Google Scholar
- 30.Backovic N, Jancic M, Radonjic LJ (1979) Thin Solid Films 59(1):1CrossRefGoogle Scholar
- 31.Libo L, Maozhang A, Gaouhui W (2006) Surf Coat Technol 200:5102CrossRefGoogle Scholar
- 32.Szasz A, Kojnok J, Kertesz L (1984) Thin Solid Films 116:279CrossRefGoogle Scholar
- 33.Dragoe N (2001) J Appl Crystallogr 34:535Google Scholar
- 34.Rousseau JJ (1998) Basic crystallography. John Wiley & Sons, USGoogle Scholar
- 35.Randin J P, Hintermann HE (1967) Plating 54:523Google Scholar