Penetration of Surface Damage Resulting from Abrasion and Heating of MgO Crystals

Chemical polishing and dislocation etch pit observations have been applied to the study of the depth of penetration of dislocations produced by abrading (100) surfaces of MgO. From the results it has been concluded that such dislocations penetrate from 100 to 700 μm depending on the source of the material. Heating of the abraded samples for short times up to 1300°C has little influence on the depth of penetration.