Measurements of Adhesion between Sharp Diamond Indenters and Metals under Engineering Conditions

摘要

In this paper, measurements of adhesion force between several metals and sharp pyramidal diamond indenters are made under engineering conditions, including a lubricated condition. Four types of pyramidal indenters in which angle a of the opposite faces are changed in the range of 45.1 to 136° are used for the measurements. The results show that angle a markedly affects adhesion - the sharper the angle, the larger the value of adhesion force- and that the value is approximately proportional to the applied load. These results are observed under both nonlubricated and oil-lubricated conditions in air. The mechanism of adhesion between metals and sharp diamond indenters is discussed based on the observations of indentation and the results of field emission microscope analysis.