Corrosion and mechanical behavior evaluation of in-situ synthesized Cu-TiB2 nanocomposite en en In this paper, the synthesis of the copper matrix nanocomposite and the effect of adding TiB2 nanoparticles on the copper matrix have been investigated. Three different amounts of TiB2 nanoparticles 5, 10, and 15 wt% were added and sintering was carried out at 900 °C for 4 hours under argon atmosphere. The phase formation of achieved nanocomposites was studied by X-ray diffractometer and the morphology of the synthesized samples was studied by field emission scanning electron microscopy and atomic force microscopy. The polarization and electrochemical impedance spectroscopy (EIS) applying 3.5 wt% NaCl solution at room temperature was carried out to evaluate the corrosion behavior of synthesized samples. Results show that adding the TiB2 nanoparticles decreases the corrosion resistance by forming galvanic couples, but the effect the amounts of porosities have on the corrosion resistance is higher. It is revealed that the variation of the surface roughness is in direct relation to the value of polarization current density. 121 126 Hossein Aghajani School of Metallurgy and Materials Engineering Iran University of Science and Technology, Narmak, Tehran Iran haghajani@iust.ac.ir Seyed Ali Naziri Mehrabani Nano Science and Nano Engineering Department Istanbul Technical University, Maslak, Istanbul Turkey Arvin Taghizadeh Tabrizi School of Metallurgy and Materials Engineering Iran University of Science and Technology, Narmak, Tehran Iran Falih Hussein Saddam College of Engineering Thi-Qar University, Thi-Qar Iraq Nanocomposite Corrosion behavior Cu-TiB2 Surface roughness Vol 1 No 2 Paper 7.pdf [1] F. Akhtar, S.J. Askari, K. Ali Shah, X. Du, S. Guo, Microstructure, mechanical properties, electrical conductivity and wear behavior of high-volume TiC reinforced Cu-matrix composites, Mater. Charact. 60 (2009) 327–336. https://doi.org/10.1016/j.matchar.2008.09.014. ##[2] J.B Correia, H.A. Davies, C.M. Sellars, Strengthening in rapidly solidified age hardened Cu-Cr and Cu-Cr-Zr alloys, Acta Mater. 45 (1997) 177–190. https://doi.org/10.1016/S1359-6454(96)00142-5. ##[3] S.C. Tjong, K.C. Lau, Properties and abrasive wear of TiB2/Al-4%Cu composites produced by hot isostatic pressing, Compos. Sci. Technol. 59 (1999) 2005–2013. https://doi.org/10.1016/S0266-3538(99)00056-1. ##[4] J. Xu, W. Liu, Wear characteristic of in situ synthetic TiB2 particulate-reinforced Al matrix composite formed by laser cladding, Wear. 260 (2006) 486–492. https://doi.org/10.1016/j.wear.2005.03.032. ##[5] Z.M. Du, J.P. Li, Study of the preparation of Al2O3sf.SiCp/Al composites and their wear-resisting properties, J. Mater. Process. Technol. 151 (2004) 298–301. https://doi.org/10.1016/j.jmatprotec.2004.04.077. ##[6] F. Shehata, A. Fathy, M. Abdelhameed, S.F. Moustafa, Preparation and properties of Al2O3 nanoparticle reinforced copper matrix composites by in situ processing, Mater. Des. 30 (2009) 2756–2762. https://doi.org/10.1016/j.matdes.2008.10.005. ##[7] F. Chi, M. Schmerling, Z. Eliezer, H.L. Marcus, M.E. Fine, Preparation of Cu-TiN alloy by external nitridation in combination with mechanical alloying, Mater. Sci. Eng. A. 190 (1995) 181–186. https://doi.org/10.1016/0921-5093(95)09617-5. ##[8] P.K. Deshpande, R.Y. Lin, Wear resistance of WC particle reinforced copper matrix composites and the effect of porosity, Mater. Sci. Eng. A. 418 (2006) 137–145. https://doi.org/10.1016/j.msea.2005.11.036. ##[9] İ. Çelikyürek, N.Ö. Körpe, T. Ölçer, R. Gürler, Microstructure, properties and wear behaviors of (Ni3Al)p reinforced Cu matrix composites, J. Mater. Sci. Technol. 27 (2011) 937–943. https://doi.org/10.1016/S1005-0302(11)60167-9. ##[10] S.C. Tjong, K.C. Lau, Tribological behaviour of SiC particle-reinforced copper matrix composites, Mater. Lett. 43 (2000) 274–280. https://doi.org/10.1016/S0167-577X(99)00273-6. ##[11] G. Naseri Azari, A. Taghizadeh Tabrizi, H. Aghajani, Investigation on corrosion behavior of Cu–TiO2 nanocomposite synthesized by the use of SHS method, J. Mater. Res. Technol. 8 (2019) 2216–2222. https://doi.org/10.1016/j.jmrt.2019.01.025. ##[12] J.P. Tu, N.Y. Wang, Y.Z. Yang, W.X. Qi, F. Liu, et al., Preparation and properties of TiB2 nanoparticle reinforced copper matrix composites by in situ processing, Mater. Lett. 52 (2002) 448–452. https://doi.org/10.1016/S0167-577X(01)00442-6. ##[13] J.M. Torralba, F. Velasco, C.E. Costa, I. Vergara, D. Cáceres, Mechanical behaviour of the interphase between matrix and reinforcement of Al 2014 matrix composites reinforced with (Ni3Al)p, Compos. A: Appl. Sci. Manuf. 33 (2002) 427–434. https://doi.org/10.1016/S1359-835X(01)00104-X. ##[14] T. Han, J. Li, N. Zhao, C. Shi, E. Liu, et al., In-situ fabrication of nano-sized TiO2 reinforced Cu matrix composites with well-balanced mechanical properties and electrical conductivity, Powder Technol. 321 (2017) 66–73. https://doi.org/10.1016/j.powtec.2017.08.019. ##[15] A. Fathy, O. Elkady, A. Abu-Oqail, Production and properties of Cu-ZrO2 nanocomposites, J. Compos. Mater. 52 (2018) 1519–1529. https://doi.org/10.1177/0021998317726148. ##[16] E.M. Salleh, Z. Hussain, Characterization of tantalum carbide reinforced copper composite developed using mechanical alloying, Key Eng. Mater. 471–472 (2011) 798–803. https://doi.org/10.4028/www.scientific.net/KEM.471-472.798. ##[17] S.S. Javaherian, H. Aghajani, P. Mehdizadeh, Cu-TiO2 composite as fabricated by SHS method, Int. J. Self-Propag. High-Temp. Synth. 23 (2014) 47–54. https://doi.org/10.3103/S1061386214010051. ##[18] S.F. Moustafa, S.A. El-Badry, A.M. Sanad, B. Kieback, Friction and wear of copper-graphite composites made with Cu-coated and uncoated graphite powders, Wear. 253 (2002) 699–710. https://doi.org/10.1016/S0043-1648(02)00038-8. ##[19] Y. Chen, X. Zhang, E. Liu, C. He, C. Shi, et al., Fabrication of in-situ grown graphene reinforced Cu matrix composites, Sci. Rep. 6 (2016) 19363. https://doi.org/10.1038/srep19363. ##[20] C.L.P. Pavithra, B.V. Sarada, K.V. Rajulapati, T.N. Rao, G. Sundararajan, A new electrochemical approach for the synthesis of copper-graphene nanocomposite foils with high hardness, Sci. Rep. 4 (2014) 4049. https://doi.org/10.1038/srep04049. ##[21] Y. Hu, O.A. Shenderova, Z. Hu, C.W. Padgett, D.W. Brenner, Carbon nanostructures for advanced composite, Rep. Prog. Phys. 69 (2006) 1847. https://doi.org/10.1088/0034-4885/69/6/R05. ##[22] N. Sadeghi, H. Aghajani, M.R. Akbarpour, Microstructure and tribological properties of in-situ TiC-C/Cu nanocomposites synthesized using different carbon sources (graphite, carbon nanotube and graphene) in the Cu-Ti-C system, Ceram. Int. 44 (2018) 22059–22067. https://doi.org/10.1016/j.ceramint.2018.08.316. ##[23] M.S. Motta, P.K. Jena, E.A. Brocchi, I.G. Solórzano, Characterization of Cu–Al2O3 nano-scale composites synthesized by in situ reduction, Mater. Sci. Eng. C. 15 (2001) 175–177. https://doi.org/10.1016/S0928-4931(01)00272-7. ##[24] S.A.N. Mehrabani, A.T. Tabrizi, H. Aghajani, H. Pourbagheri, Corrosion Behavior of SHS-Produced Cu–Ti–B Composites, Int. J. Self-Propag. High-Temp. Synth. 29 (2020) 167–172. https://doi.org/10.3103/S1061386220030061. ##[25] S.A. Javadi, S.N. Hokmabad, A.T. Tabrizi, H. Aghajani, Corrosion behavior, microstructure and phase formation of ternary Ni-Ti-Si nano composite synthesized by SHS method, Powder Metall. 64 (2021) 341–350. https://doi.org/10.1080/00325899.2021.1906564.