TY - EJOU AU - Yang, Liang AU - Wang, Caizhuang AU - Lin, Shiwei AU - Cao, Yang AU - Liu, Xiaoheng TI - Early Stage of Oxidation on Titanium Surface by Reactive Molecular Dynamics Simulation T2 - Computers, Materials \& Continua PY - 2018 VL - 55 IS - 1 SN - 1546-2226 AB - Understanding of metal oxidation is very critical to corrosion control, catalysis synthesis, and advanced materials engineering. Metal oxidation is a very complex phenomenon, with many different processes which are coupled and involved from the onset of reaction. In this work, the initial stage of oxidation on titanium surface was investigated in atomic scale by molecular dynamics (MD) simulations using a reactive force field (ReaxFF). We show that oxygen transport is the dominant process during the initial oxidation. Our simulation also demonstrate that a compressive stress was generated in the oxide layer which blocked the oxygen transport perpendicular to the Titanium (0001) surface and further prevented oxidation in the deeper layers. The mechanism of initial oxidation observed in this work can be also applicable to other self-limiting oxidation. KW - Reactive force field KW - metal oxidation KW - self-limiting oxidation KW - Titanium (0001) surface KW - molecular dynamics simulation KW - compressive stress DO - 10.3970/cmc.2018.055.177