STUDY ON THE CAPABILITY OF MATERIALS AS REFERENCE BLOCKS FOR THE MACRO RANGE OF INSTRUMENTED INDENTATION TEST
Ch. Ullner, Th. Reich
Abstract:
Part 3 of the ISO 14577 “Instrumented indentation test for hardness and materials parameters“ (IIT) concerns the calibration of reference blocks. Besides the widely spread activities for supplying reference blocks in the nano and micro range it is needed to be taken into account the macro range too. The paper reports on test results on ceramic materials which are tailored for reference blocks. The specimens made of Si3N4, SiC, or Al2O3 ceramics are highly homogenous and exhibit an increased quality with a roughness Ra ≤ 0.005 µm. They are successfully used for reference blocks of the traditional Vickers and Knoop hardness. In comparison, the capability of hardened steel which is used for traditional hardness techniques is studied.
Joint International Conference on Force, Mass, Torque, Hardness and Civil Engineering Metrology in the age of globalization
Title:
8th HARDMEKO Conference on Hardness Measurement (together with 18th TC3 Conference on Force, Mass and Torque and 1st TC20 Conference on Civil Engineering Metrology)
