I have equipped a test bed for cavitation experiments using the ASTM G32 configuration with a Branson sonifer cell disrupter mod 450 with exponential horn 1/2"(amplitude 10-65 micron). I'm trying to make a calibration with Ni200 samples in modified and not modified configuration. I have...
What about a standard microhardness or nanohardness tester (http://www.csm-instruments.com/): the indentation depth must be less than 1/10 of the coating thickness in order to have the coating hardness uninfluenced by the substrate.
