Recently mechanical alloying (MA) has been employed to synthesize various kinds of materials. The MA of graphite under Ar gas atmosphere transformed the hexagonal graphite into nanostructured graphite which has a lot of dangling bonds. In case of the mechanical alloying of the graphite under D2 gas atmosphere, deuterium was absorbed by the solid-gas reaction. The radial distribution function RDF (r) derived by neutron diffraction experiments informed us the location of deuterium in the nano-structured graphite. One is the C-D covalent bond and the other is deuterium located between layers of the graphite.
