Reducing the influence of the surface roughness on the hardness measurement using instrumented indentation test

Scanning Probe Microscopy 2017

Maslenikov, I.^1 ; Useinov, A.^1 ; Birykov, A.^1 ; Reshetov, V.^2

FSBI TISNCM, Troitsk, Moscow, Russia^1

NRTU MEPhI, Moscow, Russia^2

关键词: Hardness and elastic modulus;    Hardness measurement;    Instrumented indentation;    Isotropic surfaces;    Limiting case;    Sample surface;    Surface roughness parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/256/1/012003/pdf
DOI  :  10.1088/1757-899X/256/1/012003

来源: IOP

【 摘 要 】

The instrumented indentation method requires the sample surface to be flat and smooth; thus, hardness and elastic modulus values are affected by the roughness. A model that accounts for the isotropic surface roughness and can be used to correct the data in two limiting cases is proposed. Suggested approach requires the surface roughness parameters to be known.