A New Method for Electroplating of Crack-Free Chromium Coatings

Document Type : Research Article


Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, I.R. IRAN


In this study, different amounts of MoS2 particles and an anionic surfactant were added to the conventional chromium electroplating bath in order to electrodeposite crack-free chromium coatings and the structure, morphology, tribology and corrosion behavior of the deposited coatings were investigated using X-ray diffraction spectroscopy, scanning electron microscopy, pin on disk wear test method, dynamic polarization, and electrochemical impedance spectroscopy techniques, respectively. The results showed that the incorporation of MoS2 particle into the electrodeposited Cr coatings is impossible and no chromium coating can be electroplated from baths containing more than 5 g/L MoS2 particles. In addition, as the MoS2 concentration in the bath increases up to 1 g/L the corrosion and wear resistance of the deposited coatings increases. Moreover, those coatings that were electroplated from the baths containing more than 1 g/L exhibited less performance regarding their corrosion and wear behavior.


Main Subjects

[1] Petukhov I., Kichigin V., Zaitseva A., Mikhailov E., Zavodchikov S., Corrosion Degradation of Chromium Coatings on Steel in NaCl Concentrated Solution, Prot. Met., 42(4): 378-388 (2006).
[2] Fedrizzi L., Rossi S., Bellei F., Deflorian F., Wear–Corrosion Mechanism of Hard Chromium Coatings, Wear, 253(11): 1173-1181 (2002).
[3] Bajwa R., Khan Z., Nazir H., Chacko V., Saeed, A., Wear and Friction Properties of Electrodeposited Ni-Based Coatings Subject to Nano-enhanced Lubricant and Composite Coating, Acta Metallurgica Sinica (English Letters), 29(10): 902-910 (2016).
[4] Bayandori Moghaddam A., Hosseini S., Badraghi J., Banaei A., Hybrid Nanocomposite Based on CoFe2O4 Magnetic Nanoparticles and Polyaniline, Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 29(4): 173-179 (2010).
[7] Sohi M.H., Kashi, A., Hadavi S., Comparative Tribological Study of Hard and Crack-Free Electrodeposited Chromium Coatings, Journal of Materials Processing Technology, 138(1): 219-222 (2003).
[8] Surviliene S., Jasulaitiene V., Lisowska-Oleksiak A., Safonov V., Effect of WC on Electrodeposition and Corrosion Behaviour of Chromium Coatings, J. Appl. Electrochem., 35(1): 9-15 (2005).
[10] Ke-Ning S., Xin-Ning H., Ji-Hai Z., Ji-Ren W., Electrodeposited Cr-Al2O3 Composite Coating for Wear Resistance, Wear, 196(1): 295-297 (1996).
[11] Yang J., Liang J., Zhang G., Li J., Liu H., Shen Z., Heterostructures of MoS2 Nanofilms on TiO2 Nanorods Used as Field Emitters, Vacuum, 123: 17-22 (2016).
[13] Kao W.-H., Su Y.L., Optimum MoS2–Cr Coating for Sliding Against Copper, Steel and Ceramic Balls, J. Mater. Sci. Eng. A, 368(1): 239-248 (2004). 
[14] Kanagalasara V., Venkatesha T.V., Studies on Electrodeposition of Zn–MoS2 Nanocomposite Coatings on Mild Steel and Its Properties, J. Solid State Electrochem., 16(3): 993-1001 (2012).
[15] Chang Y.-C., Chang Y.Y., Lin C. I., Process Aspects of the Electrolytic Codeposition of Molybdenum Disulfide with Nickel, Electrochim. Acta, 43(3): 315-324 (1998).
[16] Morshed-Behbahani K., Najafisayar P., Abbasi Z., Pakshir M., Ebrahimi R., The Effect of Simple Shear Extrusion on the Corrosion Behavior of Copper, Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 35(2): 73-78 (2016).
[17] Lukowski M.A., Daniel A.S., Meng F., Forticaux A., Li L., Jin S., Enhanced Hydrogen Evolution Catalysis from Chemically Exfoliated Metallic MoS2 Nanosheets, J. Am. Chem. Soc., 135(28): 10274-10277 (2013).
[18] Kumar M.P., Venkatesha T., Pavithra M., Shetty A. N., Anticorrosion Performance of Electrochemically Produced Zn-1% Mn-Doped TiO2 Nanoparticle Composite Coatings, J. Mater. Eng. Perform., 24(5): 1995-2004 (2015).
[19] Morshed-Behbahani K., Najafisayar P., Pakshir M., Study of the Intergranular Corrosion of Sensitized UNS S31803 Stainless Steel in Transpassive Region, J. Mater. Eng. Perform., 25(8): 3418-3429 (2016).