e-space
Manchester Metropolitan University's Research Repository

Influence of mechanical properties on the nanoscratch behaviour of hard nanocomposite TiN/Si

Beake, B. D., Vishnyakov, Vladimir, Valizadeh, Reza and Colligon, John (2006) Influence of mechanical properties on the nanoscratch behaviour of hard nanocomposite TiN/Si. Journal of physics D, 39 (7). 1392-1397.. ISSN 1361-6463

File not available for download.

Abstract

A dual ion beam system has been used to produce hard nanocomposite TiN/Si3N4 coatings on silicon substrate. Mechanical properties have been determined by nanoindentation and tribological properties have been measured by nanoscratch testing. Nanoindentation showed that harder nanocomposites exhibited higher ratios of hardness to modulus (H/E). The dependence of the resistance to plastic deformation (H3/E2) on hardness was approximately linear. The H/E value influenced the nanoscratch behaviour. Coatings with higher H/E showed higher critical loads for elastic–plastic transition and also the total coating failure occurring in front of the probe. However, coatings with higher H/E also exhibited an unloading failure, occurring behind the probe at much lower load than the loading failure. Optimizing this stress-related unloading failure could be more important for tribological applications.

Impact and Reach

Statistics

Activity Overview
6 month trend
0Downloads
6 month trend
384Hits

Additional statistics for this dataset are available via IRStats2.

Altmetric

Actions (login required)

View Item View Item