Molecular dynamic simulations of Al-B-O

Friction of aluminum borates was investigated using molecular dynamics simulations. Contrary to conventional expectations, it is found that specific combinations of temperature and velocity lead to unexpected increases in the coefficient of friction (COF), influenced by the elemental distribution in the lubricant’s surface layer. While Alumina borate generally maintains its structure across various conditions, certain thermal and mechanical environments cause deviations that negatively affect COF and hardness. It is also noted that water molecules on the surface reduces COF and enhance hardness, due to water-lubricant interactions. The underlying mechanism will be discussed in this talk, providing a new direction for future research in material science and tribology.