Molecular Dynamics Analysis of Extension of Crack in Diamond

Abstract

It is generally known that there are variations of the resistance to chipping among mono-crystal diamond cutting tools. The occurrence of chipping is assumed to closely relate to the extension of cracks caused by the mechanical polishing. Therefore, the extension of crack in diamond has been simulated by the molecular dynamics (MD) method. The results showed that the crack extension was affected by the nitrogen impurity called platelet in raw diamond.