engleski

APPLICATION OF SCANNIG ELECTRON MYCROSCOPE FOR THE ANALYSIS OF REFERENCE HARDNESS BLOCK SURFACE QUALITY

One of the most significant problems in realising hardness traceability are reference hardness blocks failures. The work included testing on one standard block prepared in compliance with the requirements defined in EN ISO 6507-3 standard. It was calibrated on the reference hardness testing machine. For the analysis of the hardness block surface and the indentation, a scanning electron microscope TESCAN, type: VEGA TSS136LS with EDS sensor was applied. Failures caused by the reference hardness blocks finishing and failures due to the material inhomogeneity were noted. Microanalysis of the chemical composition on typical spots was carried out with EDS sensor.

Vickers hardness; scanning electron microscope; reference hardness block

nije evidentirano