Abstract
In this paper, a continuous and dense coating was deposited on samples of the ZA27 alloy through the plasma electrolytic oxidation (PEO) process to improve its wear and corrosion performance. A nontoxic and environmentally friendly inorganic salt, Na2SiO3, is chosen as electrolytes with different concentrations. The effect of the concentration of Na2SiO3 aqueous solutions on the coating performances was investigated. The coatings with 3Al2O3·2SiO2 (mullite), Zn2SiO4 and Al2O3 (either crystal phase or with some amorphous SiO2 phases) were formed by the PEO processes. It was found that the coating thickness increased with the increase in electrolyte concentration. However, the wear and corrosion resistance performance of the coatings did not improve as the coating’s thickness increased. This was due to the fact that the coating produced with electrolytes of 10 g/L has a porous structure with large pore size. Among all the samples, coating produced by 15 g/L Na2SiO3 has the best wear and corrosion resistance, which is attributed to its continuous and dense structure with thickness of about 47 μm.
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A. Pola, L. Montesano, M. Gelfi, and G.M. La Vecchia, Comparison of the Sliding Wear of a Novel Zn Alloy with that of Two Commercial Zn Alloys Against Bearing Steel and Leaded Brass, Wear, 2016, 368–369, p 445–452
A.P. Hekimoglu and T. Savaskan, Effects of Contact Pressure and Sliding Speed on the Unlubricated Friction and Wear Properties of Zn-15Al-3Cu-1Si Alloy, Tribol. Trans., 2016, 59(6), p 1114–1121
B. Miroslav, A. Vencl, S. Mitrovic, and I. Bobic, Influence of T4 Heat Treatment on Tribological Behavior of Za27 Alloy Under Lubricated Sliding Condition, Tribol. Lett., 2009, 36(2), p 125–134
M. Kaplan, M. Ileriturk, and Z. Balalan, Relationship Between Microstructure, Hardness, XRD, TGDTA Analysis, and Wear Performance of a Cast ZA Alloy, Mater. Manuf. Processes, 2008, 23(3–4), p 400–406
M. Babic, S. Mitrovic, and B. Jeremic, The Influence of Heat Treatment on the Sliding Wear Behavior of a ZA-27 Alloy, Tribol. Int., 2010, 43(1–2), p 16–21
Z.-Q. Li, H.-Z. Zhou, X.-Y. Luo, T. Wang, and K. Shen, Aging Microstructural Characteristics of ZA-27 Alloy and SiCp/ZA-27 Composite, Trans. Nonferrous Met. Soc. China, 2006, 16(1), p 98–104
G. Pürçek, T. Savaşkan, T. Küçükömeroğlu, and S. Murphy, Dry Sliding Friction and Wear Properties of Zinc-Based Alloys, Wear, 2002, 252(11–12), p 894–901
A. Turk, M. Durman, and E.S. Kayali, The Effect of Manganese on the Microstructure and Mechanical Properties of Zinc-Aluminium Based ZA-8 Alloy, J. Mater. Sci., 2007, 42(19), p 8298–8305
Z.M. El-Baradie, M. Waly, and A.N. Abd, El-Azim, A Note on the Effect of Glass Reinforcement on the Properties of AS-Cast and Heat Treated Zn–12Al Composite Alloy, J. Mater. Process. Technol., 2001, 114(3), p 194–200
B.K. Prasad, Investigation into Sliding Wear Performance of Zinc-Based Alloy Reinforced with SiC Particles in Dry and Lubricated Conditions, Wear, 2007, 262(3–4), p 262–273
T.J. Chen, C.R. Yuan, M.F. Fu, Y. Ma, Y.D. Li, and Y. Hao, In Situ Silicon Particle reinfoRced ZA27 Composites Part 1-Microstructures and Tensile Properties, Mater. Sci. Technol., 2008, 24(11), p 1321–1332
B. Bobic, J. Bajat, I. Bobic, and B. Jegdic, Corrosion Influence on Surface Appearance and Microstructure of Compo Cast ZA27/SiCp Composites in Sodium Chloride Solution, Trans. Nonferrous Met. Soc. China, 2016, 26(6), p 1512–1521
S. Gupta, M.A. Habib, R. Dunnigan, N. Kaabouch, and S. Ghosh, Synthesis and Characterization of Ti3SiC2 Particulate-Reinforced Novel Zn Matrix Composites, J. Mater. Eng. Perform., 2015, 24(10), p 4071–4076
C. Gu, L. Wang, X. Hu, W. Dong, and H. DaCosta, Borate’s Effects on Coatings by PEO on AZ91D Alloy, Surf. Eng., 2017, 33(10), p 773–778
L. Wang and X. Nie, Silicon Effects on Formation of EPO Oxide Coatings on Aluminum Alloys, Thin Solid Films, 2006, 494(1–2), p 211–218
G. Bian, L. Wang, J. Wu, J. Zheng, H. Sun, and H. DaCosta, Effects of Electrolytes on the Growth Behavior, Microstructure and Tribological Properties of Plasma Electrolytic Oxidation Coatings on a ZA27 Alloy, Surf. Coat. Technol., 2015, 277, p 251–257
L. Wang, X. Hu, and X. Nie, Deposition and Properties of Zirconia Coatings on a Zirconium Alloy Produced by Pulsed DC Plasma Electrolytic Oxidation, Surf. Coat. Technol., 2013, 221, p 150–157
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This research was supported by Zhejiang Provincial Natural Science Foundation of China under Grant No. LY17E010002.
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Li, G., Mao, Y., Li, Z. et al. Tribological and Corrosion Properties of Coatings Produced by Plasma Electrolytic Oxidation on the ZA27 Alloy. J. of Materi Eng and Perform 27, 2298–2305 (2018). https://doi.org/10.1007/s11665-018-3348-0
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DOI: https://doi.org/10.1007/s11665-018-3348-0