Preparation and Characterization of Al-Cu-Al2O3/Gr Nano Compound by Metallic Powder Method and Study of the Effect of the Rolling Process on Physical Properties as Suitable Materials for Heat Sink
Fathei. Nouh1, T. El-Bitar2, Hossam M. Yehia3, Omayma El-Kady4

1Er. Fathei. Nouh, Faculty, Department of Mechanical Engineering, Sinai University, Egypt. 
2Prof. T. El-Bitar, Department of Metal, CMRDI, Cairo, Egypt. 
3Prof. Hossam M. Yehia, Faculty, Department of Industrial Education, Helwan University, Cairo, Egypt. 
4Prof. Omayma El-Kady, Powder Division, Department of Manufacturing Technology, Central Metallurgical Technology Research and Development Institute, Egypt. 
Manuscript received on 13 June 2022 | Revised Manuscript received on 16 June 2022 | Manuscript Accepted on 15 August 2022 | Manuscript published on 30 August 2022 | PP: 26-31 | Volume-11 Issue-6, August 2022 | Retrieval Number: 100.1/ijeat.F36610811622 | DOI: 10.35940/ijeat.F3661.0811622
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Abstract: Al-Cu-Al2O3 / Gr Nano compound was successfully prepared by metallic powder method, 6 samples were prepared with different weight ratios of graphene, 10% copper and 2.5% Al2O3 and proportions of 0.5, 1, and 1.5 graphene were prepared, the samples were run in a mill from Ceramic in a ratio of 1:5 powder into balls for 35 hours, which helped to break the aluminum and copper particles and reduce their size, which helps in the process of homogeneous mixing of the compound. The samples were compressed at 60 bar pressure and sintered in a vacuum at 550 and 565 degrees Celsius for 60 minutes. Sintering at 550°C proved to be more suitable for the mixture. Two identical sets of samples were prepared. Both SEM were used to investigate the microstructure and components of the sintered nanocomposites. Relative density, hardness, electrical conductivity and thermal conductivity study. The rolling process of the samples was carried out with a percentage of 35% of the sample size successfully at a temperature of 480 degrees Celsius, and this led to an improvement in the density of the samples and hardness and an increase in the diffusion of the reinforces, which led to an improvement in electrical conductivity by 16: 25% and a better improvement in thermal conductivity. Improved up to 1.5% graphene by weight after rolling and 1% graphene before rolling. 
Keywords: Powder Technology, Forming, Aluminum ingot, Metallization, Graphene Nano-Sheets, Electrical Properties, Hardness, Hot Rolling, Thermal Properties.
Scope of the Article: Thermal Properties