TUNGSTEN SINGLE CRYSTAL AS HARDNESS STANDARD FOR NANOINDENTATION

Kensuke Miyahara, Takashi Yamamoto

Abstract

Hardness standard of tungsten single crystal were utilized in order to check stability and reproducibility of nanoindentation testers. The pop-in load and maximum penetration depth were measured and monitored during several hundreds of repeated experiments. One of the tested instruments showed gradual increase of pop-in load and decrease of maximum depth, which indicate the indenter tip was damaged by repeated tests. The both parameters, the pop-in load and the maximum depth, can be used to detect the change of the area function; the pop-in force is more sensitive and should be easy for general users. Other applications of tungsten single crystal are also discussed.

Keywords

pop-in

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IMEKO-TC5-2007-003.pdf

DOI

-

IMEKO TC

TC5 - Hardness Measurement

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