摘要
This paper studies the abrasion mechanism of natural diamond crystals,proposes a new theory on soft and hard directions to grind diamonds in different planes.Examination of the micro-structure of polished surface by SEM shows diamond is mainly removed through a micro-cleavage process in (111) planes and the abrasion resistance of diamond relates to the orientation of cleavage planes,and the abrasion resistance anisotropy of diamond crystals is mainly due to the different levels of difficulty in micro-cleavage,while they are lapped in different directions.The results of analysis are in conformance with experimental results.
