On the microstructure and deformation mechanisms under indentations of TiN/(Ti,Al)N multilayer coatings

N.J.M. Carvalho, B.J. Kooi, J.T.M. de Hosson

OnderzoeksoutputAcademicpeer review

Samenvatting

Commercially available multilayer TiN/(Ti,AI)N coatings deposited onto stainless steel substrates have been evaluated with respect to their microstructure and deformation mechanisms. The microstructure and chemical composition have been investigated using a combination of scanning electron microscopy cross-sectional transmission electron microscopy and electron energy loss spectroscopy. The multilayer exhibited a columnar structure extending throughout the film thickness. Micrometer-sized macroparticles were present at various distances from the substrate, being incorporated in the growing film in the solid state. They consisted of a core structure with equiaxed grains having the alpha-Ti phase and an outer layer of TiN. Nanoindentation testing was used to explore the deformation mechanisms operating in the coated system. Analysis of the load-displacement curves showed that they were useful in identifying the occurrence of cracking. By cross-sectioning the nanoindentations, the deformation was observed to occur along the columnar grain boundaries and in the layers parallel to the interfaces. The effect of the macroparticles in the deformation mechanisms has been observed and will be discussed.

Originele taal-2English
TitelSURFACE TREATMENT VI
RedacteurenCA Brebbia, JTM DeHosson, SI Nishida
Plaats van productieSOUTHAMPTON
UitgeverijWIT Press
Pagina's233 - 243
Aantal pagina's10
ISBN van geprinte versie1-85312-962-3
StatusPublished - 2003
Evenement6th International Conference on Surface Treatment - , Greece
Duur: 1-mrt.-2003 → …

Publicatie series

NaamCOMPUTATIONAL AND EXPERIMENTAL METHODS
UitgeverijWIT PRESS
Volume7
ISSN van geprinte versie1466-7266

Other

Other6th International Conference on Surface Treatment
Land/RegioGreece
Periode01/03/2003 → …

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