Duplex electroless Ni-P/Ni-Cu-P coatings: Preparation, evaluation of microhardness, friction, wear, and corrosion performance

Technical report





Mild steel, electroless nickel deposits, duplex coatings, heat treatment, physical properties, corrosion
Graphical Abstract


The current study focuses on the development of duplex Ni-P/Ni-Cu-P coatings by the electro­less deposition method. Coatings are developed on mild steel substrates with Ni-Cu-P as the outer layer and Ni-P as the inner layer and vice versa. The coated samples are heat-treated at temperatures ranging between 200 to 800 °C during 1 and 4 h. Coated samples are characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The effect of heat treatment tempera­ture and its time duration on the hardness, friction and wear behaviour of both coatings are evaluated and compared. This would help in understanding how heat treatment influences the duplex system of coatings and helps in identifying the suitable condition of heat treatment for optimal performance of the coating. It is observed that heat treatment has a positive influence over the coating performance, which is the best when treated under optimal temperature and time duration conditions. The corrosion behaviour of the coatings is also assessed with the help of electrochemical techniques, viz. potentiodynamic polari­zation and electrochemical impedance spectroscopy. The results show that the duplex coat­ings can provide substantial protection to the mild steel substrates. Heat treatment is also found to have a significant influence on the corrosion behaviour of duplex coatings.


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M. Palaniappa, S. K. Seshadri, Friction and wear behavior of electroless Ni–P and Ni–W–P alloy coatings, Wear 265(5-6) (2008) 735-740. https://doi.org/10.1016/j.wear.2008.01.002

P. Biswas, S. K. Das, P. Sahoo, Role of heat treatment on the friction and wear behavior of duplex electroless nickel deposits, Materials Today: Proceedings. 66(9) (2022) 3902-3909 https://doi.org/10.1016/j.matpr.2022.06.322

P. Sahoo, in Woodhead Publishing Reviews: Mechanical Engineering Series, Materials and Surface Engineering: Research and Development, J.P. Davim (Ed.), Woodhead/Elsevier, Cambridge/Oxford, UK, 2012, p. 163. https://doi.org/10.1533/9780857096036.163

P. Sahoo, S. K. Das, Tribology of electroless nickel coatings–a review, Materials & Design 32(4) (2011) 1760-1775. https://doi.org/10.1016/j.matdes.2010.11.013

S. Banerjee, P. Sarkar, P. Sahoo, Improving corrosion resistance of magnesium nanocomposites by using electroless nickel coatings, Facta Universitatis. Series: Mechanical Engineering 20(3) (2022) 647-663. https://doi.org/10.22190/FUME210714068B

F. Mindivan, H. Mindivan, Improvement of surface properties via an electroless Ni-B coating for commercial purity titanium, BSEU Journal of Science 6 (2019) 99-105. https://doi.org/10.35193/bseufbd.566236

F. Mindivan, H. Mindivan, C. Darcan, Electroless Ni-B coating of pure titanium surface for enhanced tribocorrosion performance İn artificial saliva and antibacterial activity, Tribology in Industry 39(2) (2017) 270-276. https://doi.org/10.24874/ti.2017.39.02.15

D. Pye, Practical nitriding and ferritic nitrocarburizing, ASM International, Materials Park, Ohio, USA, 2003.

R. C. Agarwala, V. Agarwala, Electroless alloy/composite coatings: A review, Sadhana 28(3) (2003) 475-493. https://doi.org/10.1007/BF02706445

L. Li, J. Wang, J. Xiao, J. Yan, H. Fan, L. Sun, L. Xue, Z. Tang, Time-dependent corrosion behavior of electroless Ni–P coating in H2S/Cl− environment, International Journal of Hydro-gen Energy 46(21) (2021) 11849-11864. https://doi.org/10.1016/j.ijhydene.2021.01.053

H. Mindivan. Tribocorrosion behaviour of electroless Ni–P coating on AA7075 aluminum alloy, Acta Physica Polonica A 135 (2019) 1102-1104. https://doi.org/10.12693/APhysPolA.135.1102

Z. Bangwei, H. Wangyu, Z. Qinglong, Q. Xuanyuan, Properties of electroless Ni-W-P amorphous alloys, Materials Characterization 37(2-3) (1996) 119-122. https://doi.org/10.12693/APhysPolA.135.1102

L. Wang, Y. Gao, T. Xu, Q. Xue, A comparative study on the tribological behavior of nanocrystalline nickel and cobalt coatings correlated with grain size and phase structure, Materials Chemistry and Physics 99(1) (2006) 96-103. https://doi.org/10.1016/j.matchemphys.2005.10.014

W. Y. Chen, S. K. Tien, F. B. Wu, J. G. Duh, Crystallization behaviors and microhardness of sputtered Ni–P, Ni–P–Cr and Ni–P–W deposits on tool steel, Surface and Coatings Technology 182(1) (2004) 85-91. https://doi.org/10.1016/S0257-8972(03)00851-X

J. Li, C. Sun, M. Roostaei, M. Mahmoudi, V. Fattahpour, H. Zeng, J. L. Luo, Characterization and corrosion behavior of electroless Ni-Mo-P/Ni-P composite coating in CO2/H2S/Cl− brine: Effects of Mo addition and heat treatment, Surface and Coatings Technology 403 (2020) 126-416. https://doi.org/10.1016/j.surfcoat.2020.126416

S. Z. Ali, L. K. Abbas, A. K. Hussein, Optimization of Electroless Ni-P, Ni-Cu-P and Ni-Cu-P-TiO2 Nanocomposite Coatings Microhardness using Taguchi Method, IOP Conference Series: Materials Science and Engineering 1094 (2021) 012168. https://doi.org/10.1088/1757-899X/1094/1/012168

A. A. Aal, M. S. Aly, Electroless Ni–Cu–P plating onto open cell stainless steel foam, Applied Surface Science 255(13-14) (2009) 6652-6655. https://doi.org/10.1016/j.apsusc.2009.02.073

J. P. Davim, Tribology of Nanocomposites, Springer, Heidelberg, Germany, 2013. https://doi.org/10.1007/978-3-642-33882-3

T. S. Narayanan, K. Krishnaveni, S. K. Seshadri, Electroless Ni–P/Ni–B duplex coatings: preparation and evaluation of microhardness, wear and corrosion resistance, Materials Chemistry and Physics 82(3) (2003) 771-779. https://doi.org/10.1016/S0254-0584(03)00390-0

X. M. Chen, G. Y. Li, J. S. Lian, Deposition of electroless Ni-P/Ni-WP duplex coatings on AZ91D magnesium alloy, Transactions of Nonferrous Metals Society of China 18 (2008) s323-s328. https://doi.org/10.1016/S1003-6326(10)60225-7

V. Vitry, E. Francq, L. Bonin, Mechanical properties of heat-treated duplex electroless nickel coatings, Surface Engineering 35(2) (2019) 158-166. https://doi.org/10.1080/02670844.2018.1463679

F. Mindivan, H. Mindivan, The study of electroless Ni-P/Ni-B duplex coating on HVOF-sprayed martensitic stainless steel coating, Acta Physica Polonica A 131(1) (2017) 64-67.


T. S. Narayanan, I. Baskaran, K. Krishnaveni, S. Parthiban, Deposition of electroless Ni–P graded coatings and evaluation of their corrosion resistance, Surface and Coatings Technology 200(11) (2006) 3438-3445. https://doi.org/10.1016/j.surfcoat.2004.10.014

V. Vitry, L. Bonin, Formation and characterization of multilayers borohydride and hypophosphite reduced electroless nickel deposits, Electrochimica Acta 243 (2017) 7-17. https://doi.org/10.1016/j.electacta.2017.04.152

S. Kumar, T. Banerjee, D. Patel, Tribological characteristics of electroless multilayer coating: a review, Materials Today: Proceedings 33 (2020) 5678-5682. https://doi.org/10.1016/j.matpr.2020.04.207

H. Mindivan, Tribocorrosion behavior of electroless Ni-P/Ni-B duplex coating on AA7075 aluminum alloy, Industrial Lubrication and Tribology 71(5) (2019) 630-635. https://doi.org/10.1108/ILT-05-2018-0177

J. P. Davim, Tribology for Engineers: A practical guide, Woodhead/Elsevier, Cambridge/Oxford, UK, 2011. https://doi.org/10.1533/9780857091444.frontmatter

A. Biswas, S.K. Das, P. Sahoo, Correlating tribological performance with phase transformation behavior for electroless Ni-(high) P coating, Surface and Coatings Technology 328 (2017) 102-114. https://doi.org/10.1016/j.electacta.2017.04.152

A. Biswas, S. K. Das, P. Sahoo, Oxidation issues during heat treatment and effect on the tribo-mechanical performance of electroless Ni-P–Cu deposits, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 235(7) (2021) 1665-1685. https://doi.org/10.1177/1464420721999823

M. Palaniappa, S. K. Seshadri, Structural and phase transformation behavior of electroless Ni–P and Ni–W–P deposits, Materials Science and Engineering A 460 (2007) 638-644. https://doi.org/10.1016/j.msea.2007.01.134

D. B. Lewis, G. W. Marshall, Investigation into the structure of electrodeposited nickel-phosphorus alloy deposits, Surface and Coatings Technology 78(1-3) (1996) 150-156. https://doi.org/10.1016/0257-8972(94)02402-2

D. Mohanty, T. K. Barman, P. Sahoo, Characterization and corrosion study of electroless Nickel-Boron coating reinforced with alumina nanoparticles, Materials Today: Proceedings 19 (2019) 317-321. https://doi.org/10.1016/j.matpr.2019.07.216

P. Sahoo, S. Roy, Tribological behavior of electroless Ni-P, Ni-P-W and Ni-P-Cu coatings: A Comparison, International Journal of Surface Engineering and Interdisciplinary Materials Science (IJSEIMS) 5(1) (2017) 1. https://doi.org/10.4018/IJSEIMS.2017010101

A. Biswas, S. K. Das, P. Sahoo, Effect of copper incorporation on phase transformation behavior of electroless nickel–phosphorous coating and its effect on the tribological behavior, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 235(4) (2021) 898-916. https://doi.org/10.1177/1464420720981602

C. J. Chen, K. L. Lin, The deposition and crystallization behaviors of electroless Ni‐Cu‐P deposits, Journal of the Electrochemical Society 146(1) (1999) 137. https://doi.org/10.1149/1.1391576

S. Duari, A. Mukhopadhyay, T. K. Barman, P. Sahoo, Investigation of friction and wear properties of electroless Ni–P–Cu coating under dry condition, Journal of Molecular and Engineering Materials 4(04) (2016) 1640013. https://doi.org/10.1142/S225123731640013X

A. Sinha, Z. Farhat, Effect of surface porosity on tribological properties of sintered pure Al and Al 6061, Materials Sciences and Applications 6(06) (2015) 549. https://doi.org/10.4236/msa.2015.66059

B. Dubrujeaud, M. Vardavoulias, M. Jeandin, The role of porosity in the dry sliding wear of a sintered ferrous alloy, Wear 174(1-2) (1994) 155-161. https://doi.org/10.1016/0043-1648(94)90097-3

J. P. Davim, Wear of Advanced Materials, Wiley, New Jersey, USA, 2012.

ISBN 978-1848213524

J. P. Davim, Wear of Composite Materials, DE Gruyter, Berlin, Germany, 2018. https://doi.org/10.1515/9783110352986

J. Chen, G. Zhao, K. Matsuda, Y. Zou, Microstructure evolution and corrosion resistance of Ni–Cu–P amorphous coating during crystallization process, Applied Surface Science 484 (2019) 835-844. https://doi.org/10.1016/j.apsusc.2019.04.142

J. Chen, Y. Zou, K. Matsuda, G. Zhao, Effect of Cu addition on the microstructure, thermal stability, and corrosion resistance of Ni–P amorphous coating, Materials Letters 191 (2017) 214-217. https://doi.org/10.1016/j.matlet.2016.12.059



How to Cite

Biswas, P., Das, S. K., & Sahoo, P. . (2022). Duplex electroless Ni-P/Ni-Cu-P coatings: Preparation, evaluation of microhardness, friction, wear, and corrosion performance: Technical report. Journal of Electrochemical Science and Engineering, 12(6), 1261–1282. https://doi.org/10.5599/jese.1392