Al-Bahir Journal for Engineering and Pure Sciences


Pressing powders and engineering materials is an innovative method for producing samples with a low cost and multiple industrial applications. In the current article, copper metal was added in different volume ratios to a ceramic material, alumina, for the purpose of improving the properties of alumina, by pressing with a hydraulic press. Where the results of the article showed that the percentage of true porosity after sintering is from (26-13)% with a copper content of (5%) to (25%). As for the apparent porosity after sintering, it decreased from (26-9)% at a copper content of (5-25)%, while the water absorption was directly proportional to the real and apparent porosity. As for the results, the Vickers hardness increased after sintering from(54-101)Kg/mm2 at a copper content of (5-25)%. As for after heat treatment, there was a gradual increase in the resistance from (73-118)N/mm2 at a copper content of (5-25)%. As for the synthetic results of SEM, the best consistency was at (25%) copper, and the X-ray diffraction results showed the emergence of new phases that significantly strengthen the composites and improve the mechanical and structural properties And a clear improvement during the crystalline structure, and thus we find that the appearance of the phase (CuAlO2) is characterized by high durability and strength that hinders crystalline dislocations.


[1] Angelo, P. C., Subramanian, R., & Ravisankar, B. (2022). Powder metallurgy: science, technology and applications. PHI Learning Pvt. Ltd..‏.‏

[2] Salih, E. J., Allah, S. M. A., Darweesh, S. Y., & Mohammed, H. A. (2021, September). Study of some of the physical variables of a metal-based system using the powder method. In Journal of Physics: Conference Series (Vol. 1999, No. 1, p. 012068). IOP Publishing. https://doi:10.1088/1742-6596/1999/1/012068 ‏‏

[3] Chryssolouris, G. (2013). Manufacturing systems: theory and practice. Springer Science & Business Media.‏‏

[4] Darweesh, S. Y., Ali, A. M., Khodair, Z. T., & Majeed, Z. N. (2019). The effect of some physical and mechanical properties of cermet coating on petroleum pipes prepared by thermal spray method. Journal of Failure Analysis and Prevention, 19(6), 1726-1738. https://doi.org/10.1007/s11668-019-00772-1

[5] Bruschi, S., Cao, J., Merklein, M., & Yanagimoto, J. (2021). Forming of metal-based composite parts. CIRP Annals, 70(2), 567-588. https://doi.org/10.1016/j.cirp.2021.05.009 ‏ ‏

[6] Ahmed, H. H., Ahmed, A. R., Darweesh, S. Y., Khodair, Z. T., & Al-Jubbori, M. A. (2020). Processing of Turbine Blades Using Cermet Composite Materials. Journal of Failure Analysis and Prevention, 20(6), 2111-2118. https://doi.org/10.1007/s11668-020-01027-0

[7] Salih, W. A., Allah, S. M. A., & Darweesh, S. Y. (2023). Effect of Spray Angle on Some Physical Properties of a Ceramic System Produced by Thermal spraying Coating. Al-Bahir Journal for Engineering and Pure Sciences, 2(2), 4. https://doi.org/10.55810/2312-5721.1022 ‏‏

[8] Darweesh, S. Y., Jassim, I. K., & Mahmood, A. S. (2019, September). Characterization of cerment composite coating Al2O3-Ni system. In Journal of Physics: Conference Series (Vol. 1294, No. 2, p. 022011). IOP Publishing. https://doi.org/10.1088/1742-6596/1294/2/022011

[9] Ibrahim, N. M. (2023). Effect of Different Additions of Nano-Zirconia on Some Structural and Mechanical Properties of (Ni-SiC) Composite. Al-Bahir Journal for Engineering and Pure Sciences, 2(2), 3. https://doi.org/10.55810/2312-5721.1020 ‏‏‏

[10] Odhiambo, J. G., Li, W., Zhao, Y., & Li, C. (2019). Porosity and its significance in plasma-sprayed coatings. Coatings, 9(7), 460. https://doi.org/10.3390/coatings9070460

[11] Tjaronge, M. W., & Irfan, U. R. (2015). Porosity, pore size and compressive strength of self-compacting concrete using sea water. Procedia Engineering, 125, 832-837. https://doi.org/10.1016/j.proeng.2015.11.045 ‏ ‏

[12] Wheeler, J. M., & Michler, J. (2013). Elevated temperature, nano-mechanical testing in situ in the scanning electron microscope. Review of Scientific Instruments, 84(4). https://doi.org/10.1063/1.4795829 ‏ ‏

[13] Polat, S., Sun, Y., Çevik, E., Colijn, H., & Turan, M. E. (2019). Investigation of wear and corrosion behavior of graphene nanoplatelet-coated B4C reinforced Al–Si matrix semi-ceramic hybrid composites. Journal of Composite Materials, 53(25), 3549-3565. https://doi.org/10.1177/0021998319842297

[14] Jana, P., Ray, S., Goldar, D., Kota, N., Kar, S. K., & Roy, S. (2022). Study of the elastic properties of porous copper fabricated via the lost carbonate sintering process. Materials Science and Engineering: A, 836, 142713. https://doi.org/10.1016/j.msea.2022.142713

[15] Nosewicz, S., Jurczak, G., Wejrzanowski, T., Ibrahim, S. H., Grabias, A., Węglewski, W., ... & Chmielewski, M. (2022). Thermal conductivity analysis of porous NiAl materials manufactured by spark plasma sintering: Experimental studies and modelling. International Journal of Heat and Mass Transfer, 194, 123070. https://doi.org/10.1016/j.ijheatmasstransfer.2022.123070

[16] Taha, M. A., El-zaidia, M. M., Zaki, M. Z., & Abomostafa, H. M. (2023). Influence of Nano-Hybrid Reinforcements on the Improvement Strength, Thermal Expansion and Wear Properties of Cu–SiC–Fly Ash Nanocomposites Prepared by Powder Metallurgy. ECS Journal of Solid State Science and Technology, 12(3), 033011. https://doi.org/10.1149/2162-8777/acc5af

[17] Darweesh Y. Salih, et al. "The Effect of Some Physical and Mechanical Properties of Cermet Coating on Petroleum Pipes Prepared by Thermal Spray Method." Journal of Failure Analysis and Prevention 19.6 (2019): 1726-1738.‏ https://doi.org/10.1007/s11668-019-00772-1

[18] Celebi Efe G., T. Yener , I. Altinsoy , M. Ipek, S. Zeytin , C. Bindal , " The Effect of Sintering Temperature On Some Properties Of of CU–SiC Composite ", Sakarya University , Engineering Faculty , Department of Metallurgy And Materials Engineering , Esentepe Campus, 54187 Sakarya , Turkey . Journal of Alloys and Compounds 509, PP 6036-6042(2011). https://doi.org/10.1016/j.jallcom.2011.02.170

[19] Li, D., Fang, X., Deng, Z., Zhou, S., Tao, R., Dong, W., ... & Zhu, X. (2007). Electrical, optical and structural properties of CuCrO2 films prepared by pulsed laser deposition. Journal of Physics D: Applied Physics, 40(16), 4910.‏ https://doi.org/10.1088/0022-3727/40/16/023

[20] Gol, M. S. G., Malti, A., & Akhlaghi, F. (2023). Effect of WC nanoparticles content on the microstructure, hardness and tribological properties of Al-WC nanocomposites produced by flake powder metallurgy. Materials Chemistry and Physics, 296, 127252. https://doi.org/10.1016/j.matchemphys.2022.127252