Work

Substrate effect in the evaluation of elastic modulus of thin PVD coatings from nanoindentation

Year: 2024

Type: article

Abstract: The comparison of nanoindentation results on reactive HiTUS TiZrHf+ME-Ny (ME = Nb, V, Ta and VNbTa) and reactive DCMS NbMoTaW coatings showed that the influence of substrate stiffness is still not fully eliminated in the evaluation of indentation modulus. To obtain comparable results by keeping the systematic error resulting from the existing evaluation procedures the same, nanoindentation should be performed using the same test parameters, a method for depth profile acquisition, a data evaluation procedure, and coatings with similar thicknesses on the same type of substrate. Applying these rules to nanoindentation on TiZrHf+ME-Ny coatings showed that the addition of ME = Nb, V, Ta, and VNbTa caused some degradation of mechanical properties indicating negligible or even negative “cocktail effect”.

Source: Acta Polytechnica CTU Proceedings

DOI: 10.14311/app.2024.50.0036

Author: František Lofaj

Institutions: Slovak Academy of Sciences, Institute of Materials Research of the Slovak Academy of Sciences

Language: English

Topic: Metal and Thin Film Mechanics

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: Slovenská Akadémia Vied, International Visegrad Fund, Agentúra na Podporu Výskumu a Vývoja

Awards: G2000211779, Tvrdé a húževnaté vrstvy na báze boridov a nitridov pripravené progresívnymi PVD technikami