Hardness measured with an instrument having a smaller indenter and applying a lower force than the standard instrument, permitting measurements on smaller specimens or thinner sheets that are not ...

SEM images were obtained using an FEI-Company Quanta FEG 250 microscope. Superficial hardness was measured by Vickers microhardness testing using an INSIZE ISH-TDV 1000 microhardness tester; 5 ...