Abrasive Belt Grinding Hardness, Marring Hardness, and Diamond Pyramid Indentation Hardness of Glasses for Practical Use

Abstract

Abrasive belt grinding hardness, marring hardness and diamond pyramid indentation hardness (Micro-vickers hardness and Knoop hardness) of glasses for practical use have been measured (Table 1 and 2). Among these values good correlations are found between abrasive belt grinding hardness and marring hardness and between Micro-vickers hardness and Knoop hardness. Both micro-indentation hardnesses do not show notable relation with the other two (Fig. 7/10 and Table 4). None of these values have distinct bearing on transformation point of glasses tested.