Experimental Research on the Influence of Indenter Tip Radius to Indentation Hardness
Aiming at the influence law of indenter tip radius to indentation hardness, testing on the hardness of single-crystal silicon was carried out based on nanoindentation technique. Two kinds of Berkovich indenter with radius 40nm and 60nm separately were used in this experiment. According to the load-depth curve, the hardness of single-crystal silicon was achieved by Oliver-Pharr method. Experimental results are presented which show that indenter tip radius influence the hardness, the hardness value increases and the indentation size effect becomes obvious with the increasing of tip radius under same indentation depth.
Kai Cheng, Yingxue Yao and Liang Zhou
L. Zhou et al., "Experimental Research on the Influence of Indenter Tip Radius to Indentation Hardness", Applied Mechanics and Materials, Vols. 10-12, pp. 327-330, 2008