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Mechanical Properties of TiN Coatings
Author(s) -
Wiedemann R.,
Oettel H.,
Bertram T.,
Weihnacht V.
Publication year - 2001
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/1527-2648(200111)3:11<865::aid-adem865>3.0.co;2-x
Subject(s) - materials science , bending , composite material , microstructure , indentation , ultimate tensile strength , physical vapor deposition , characterization (materials science) , tin , finite element method , shear (geology) , metallurgy , structural engineering , nanotechnology , coating , engineering
It is difficult to measure the mechanical properties of physical vapor deposition coatings owing to their small layer thickness. This report describes a special four‐point bending device that makes it possible to determine quantitative critical tensile or compressive failure stresses and shear stresses in thin coatings. The bending test was also used to carry out measurements of hardness and critical loads (scratch test) under stress, excluding other influences such as microstructure changes. The material parameters determined form the basis of a finite element model of the indentation process, and this offers new possibilities for mechanical characterization of coated materials.