Dear Dr. Pradeep Senthilnathan ,

I suggest you to have a look at the following papers:

-Fabrication of bulk aluminum-graphene nanocomposite through friction stir alloying

Abhishek Sharma, Vyas Mani Sharma, Jinu Paul

Journal of Composite Materials, 54 issue: 1, page(s): 45-6 (2019)

Available at: https://journals.sagepub.com/doi/full/10.1177/0021998319859427

-Influence of Reinforcements in Aluminium Metal Matrix Composite – A Review

All Answers Ltd. allanswers.co.uk, November 2018. Web. 10 February 2020.

Available at: https://www.ukdiss.com/examples/reinforcements-in-aluminium-metal-matrix-composite.php#citethis

-Mechanical properties of graphene oxide reinforced aluminium matrix composites

Bhagya lakshmi, Muhammad Morshed, Jamshid Nouri, Dermot Brabazon, Sumsun Naher

Project: Graphene reinforced metal matrix composites (2018)

Available at Researchgate: https://www.researchgate.net/publication/323854765_Mechanical_properties_of_graphene_oxide_reinforced_aluminium_matrix_composites

-Material properties of graphene/aluminum metal matrix composites fabricated by friction stir processing

Jeon Chi-Hoon, Jeon Yong-Ha, Seo Jeong-Jin, Tien Huynh, Hong Sun-Tae, Yum Young-Jin, Hur Seung Hyun, Lee Kwang-Jin

International Journal of Precision Engineering and Manufacturing 15(6):1235-1239 (2014)

Available at Researchgate: [PT1] https://www.researchgate.net/publication/271914947_Material_properties_of_graphenealuminum_metal_matrix_composites_fabricated_by_friction_stir_processing

Good reading and best regards, Pierluigi Traverso

dear Pradeep Senthilnathan ;

the mechanical and thermal fabrication techniques can be as following;

First, the spherical aluminum powder must be flattened via mechanical milling to afford a large specific surface area and many reaction sites for the graphene oxide. A hydrophilic surface then created by coating the aluminum powder with polyvinyl alcohol. The polyvinyl alcohol-coated aluminum slurry mixed with a graphene oxide suspension, thereby inducing a reaction between graphene oxide and polyvinyl alcohol via hydrogen bonding. After thermal reduction, the composite powder further ball milled and hot-pressed at 500℃ to produce a reduced graphene oxide/aluminum composite.

for more details can go through the following reference

Article Synthesis of reduced graphene oxide/aluminum nanocomposites ...