Corrosion Behavior of (Copper/Nickel) step-wise Functionally Graded Materials
DOI:
https://doi.org/10.24425/afe.2025.153777Abstract
The present paper involves studying of the corrosion behaviour of five layers Cu/Ni Functionally Graded Materials (FGMs) in a 3.5 % NaCl solution to examine corrosion potentials (Ecorr.), corrosion current densities (icorr.) and Tafel slope. Three series of FGMs samples, labeled A1-A6, B1-B6, and C1-C6 were prepared using different experimental conditions of compaction pressure (0.7, 1 and 1.3 MPa), sintering temperature (650, 750 and 850oC) and sintering time (1 and 2 hours). The polarisation method was conducted at 3 mV/s of a scan rate, and room temperature. According into the potentiodynamic polarization test, it was found that the sintering time of 2 hrs at constant temperature, and pressure enhances the corrosion potential towards stabilization the protective surface layer. A3, A4 are samples designation corresponding to different experimental settings determined by design of experiments. Corrosion current density measurements showed that A4 sample had the highest (673.20 μA/cm²), while A3 sample had the lowest icorr (0.8508 μA/cm²). Tafel slope analysis revealed that A3 sample had the highest anodic, and cathodic slopes, and was associated with the lowest corrosion rate. The corrosion resistance (Rp) data supported these results, with A3 showing the highest resistance, confirming its superior corrosion resistance (Rp). This behaviour may be related into the noble properties of copper, and the protection of cupric oxide (CuO) compared to (NiO).References
[1] El-Galy, I.M., Saleh, B.I. & Ahmed, M.H, (2019). Functionally graded materials classifications and development trends from industrial point of view. SN Applied Sciences. 1, 1378, 1-23. https://doi.org/10.1007/s42452-019-1413-4.
[2] Sahu, S. K., Chugh, R., Sahu, D., Khatri, R., Nagpal, S. & Shekhar, S. (2024). Innovations in functionally graded materials for advanced engineering applications. Tuijin Jishu/Journal of Propulsion Technology. 45(1), 2763-2775.
[3] Mohammadi, M., Rajabi, M., & Ghadiri, M. (2021). Functionally graded materials (FGMs): A review of classifications, fabrication methods and their applications. Processing and Application of Ceramics. 15(4), 319-343. https://doi.org/10.2298/PAC2104319M.
[4] Mahinzare, M., Ranjbarpur, H. & Ghadir, M. (2018). Free vibration analysis of a rotary smart two directional functionally graded piezoelectric material in axial symmetry circular nanoplate. Mechanical Systems and Signal Processing. 100, 188-207. https://doi.org/10.1016/j.ymssp.2017.07.041.
[5] Alkunte S., Fidan I., Naikwadi V., Gudavasov S., Ali M.A., Mahmudov M., Hasanov S. & Cheepu M. (2024). Advancements and challenges in additively manufactured functionally graded materials: a comprehensive review. Journal of Manufacturing and Materials Processing. 8(1), 23-1-37. https://doi.org/10.3390/jmmp8010023.
[6] Ge, C-C., Li, J-T., Zhou, Z-J., Cao, W-B., Shen, W-P., Wang, M-X., Zhang, N-M., Liu, X. & Xu, Z-Y. (2000). Development of functionally graded plasma-facing materials. Journal of Nuclear Materials. 283-287(2), 1116-1120. https://doi.org/10.1016/S0022-3115(00)00318-4.
[7] Ling, Y., Ge, C., Li, J. & Huo, C. (2000). Fabrication of Sic/Cu functionally gradient material by graded sintering. Functionally graded materials 2000. 114, 333-340.
[8] Ge C.C., Wu A.H., Ling Y.H., Cao W.B., Li J.T. & Shen W.P. (2002). New progress of ceramic-based functionally graded plasma-facing materials in China. Key Engineering Materials. 224-226, 459-464. https://doi.org/10.4028/www.scientific.net/KEM.224-226.459.
[9] Ling, Y-H., Li, J-T., Ge, C-C. & Bai, X-D. (2002). Fabrication and evaluation of SiC/Cu functionally graded material used for plasma facing components in a fusion reactor. Journal of Nuclear Materials. 303(2-3), 188-195. https://doi.org/10.1016/S0022-3115(02)00801-2.
[10] da Costa, F. A., da Silva, A. G. P., & Gomes, U. U. (2003). The influence of the dispersion technique on the characteristics of the W–Cu powders and on the sintering behavior. Powder Technology. 134(1-2), 123-132. https://doi.org/10.1016/S0032-5910(03)00123-2.
[11] Ozkal, B., Upadhyaya, A., Ovecoglu, M. L. & German, R. M. (2004). Realtime sintering observations in W-Cu system: accelerated rearrangement densification via copper coated tungsten powders approach. Euro PM Sintering. 1-7.
[12] Jankovic´ Ilic, D., Fiscina, J., Gonzalez-Oliver, C.J.R. & Mucklich, F. (2005). Properties of Cu-W functionally graded materials produced by segregation and infiltration. In Functionally Graded Materials, proceedings of the 8th international symposium on multifunctional and functional graded materials. Materials Science Forum, Vol. 492-493, (pp. 123-128). Belgium.
[13] Zhou, Z. J., Du, J., Song, S. X., Zhong, Z. H., & Ge, C. C. (2007). Microstructural characterization of W/Cu functionally graded materials produced by a one-step resistance sintering method. Journal of Alloys and Compounds. 428(1-2), 146-150. https://doi.org/10.1016/j.jallcom.2006.03.073.
[14] Chong, F.L., Chen, J.L., Zhou, Z.J. & Li, J.G. (2008). Fabrication and plasma exposure of fine-grained tungsten / copper functionally graded materials in the HT-7 tokamak. Fusion Science and Technology. 53(3), 854-859, https://doi.org/10.13182/FST08-A1740.
[15] Stephane Alexis Jacques Forsik, (2009). Mechanical properties of materials for fusion power plants. Ph.D. Thesis, Darwin College, Cambridge, Germany.
[16] Güler, O., Varol, T., Alver, Ü. & Biyik, S. (2021). The wear and arc erosion behavior of novel copper based functionally graded electrical contact materials fabricated by hot pressing assisted electroless plating. Advanced Powder Technology. 32(8), 2873-2890. https://doi.org/10.1016/j.apt.2021.05.053.
[17] Sohail, M.G., Laurens, S., Deby, F., Balayssac, J.P. & Nuaimi, N.A. (2021). Electrochemical corrosion parameters for active and passive reinforcing steel in carbonated and sound concrete. Materials and Corrosion. 72(12), 1854-1871. https://doi.org/10.1002/maco.202112569.
[18] Schultze, J.W. & Lohrengel, M.M. (2000). Stability, reactivity and breakdown of passive films. Problems of recent and future research. Electrochimica Acta. 45(15-16), 2499-2513. https://doi.org/10.1016/S0013-4686(00)00347-9.
[19] Traldi, S.M., Rossi, J.L. & Costa, I. (2001). Corrosion of spray formed Al-Si-Cu alloys in ethanol automobile fuel. Key Engineering Materials. 189-191, 352-357. https://doi.org/10.4028/www.scientific.net/KEM.189-191.352.
[20] Traldi, S.M, Rossi, J.L. & Costa, I. (2003). An electrochemical investigation of the corrosion behavior of Al-Si-Cu hypereutectic alloys in alcoholic environments. Revista de Metalurgia Supplementos. 86-90.
[21] Stern, M. (1958). Method for determining corrosion rates from linear polarization data. Corrosion. 14(9), 60-64. https://doi.org/10.5006/0010-9312-14.9.60.
[22] Stern, M. & Geary, A.L. (1957). Electrochemical Polarization I: A Theoretical Analysis of the Slope of Polarization Curves. Journal of the Electrochemical Society. 104(1), 59-63. DOI: 10.1149/1.2428496.
