en Research Paper Research Paper In this research, expanded graphite (EG) was successfully fabricated using a simple ball milling process followed by hydrofluoric (HF, 10 wt. %) leaching. The effects of ball milling time (0-15 h) and leaching time (1-24 h) on the exfoliation of graphite were examined by XRD and Raman spectra. Furthermore, the morphological evaluation of the obtained expanded graphite samples was carried out by scanning electron microscopy (SEM). The XRD results of the ball-milled and HF treated samples showed a slight peak shift and broadening of (002) plane for expanded graphite compared to the precursor and HF-treated samples. Moreover, the intensity of the (002) planes remarkably decreased by the ball milling process but remained constant after HF treatment. Raman spectra of the samples confirmed the ordering process only in HF-treated specimens. Moreover, the intensity ratio of 2D₁ to 2D₂ band gradually increased with enhancing the HF treatment time up to 5 hours, indicating a decrement in the number of graphite layers by leaching in the HF solution. Graphite,Ball milling,HF leaching,Expanded Graphite,Raman Spectroscopy. 1 12 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-3458-1&slc_lang=en&sid=1 Saeid Karimi s.karimi@hut.ac.ir 1800319475328460014685 1800319475328460014685 Yes Department of Metallurgy and Materials Engineering, Hamedan University of Technology, Hamedan, 6516913733, Iran. Akbar Heidarpour heidarpour@hut.ac.ir 1800319475328460014686 1800319475328460014686 No Department of Metallurgy and Materials Engineering, Hamedan University of Technology, Hamedan, 6516913733, Iran. Samad Ghasemi samad.ghasemi@hut.ac.ir 1800319475328460014687 1800319475328460014687 No Department of Metallurgy and Materials Engineering, Hamedan University of Technology, Hamedan, 6516913733, Iran.