Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5464919 | Surface and Coatings Technology | 2016 | 4 Pages |
Abstract
TiN/CrN multilayered PVD coatings are known to exhibit outstanding micromechanical properties and wear resistance. On the other hand, information on their small scale fracture behaviour is rather scarce. The present work aims to address it by testing to failure FIB-milled microbeams of multilayer TiN/CrN systems with different bilayer periods (8, 19 and 25Â nm). In doing so, these micrometric specimens are first FIB notched, and thus deflected by means of a nanoindentation system. It is found that multilayer architecture translates into a beneficial synergic effect regarding critical load for reaching unstable failure; and thus, on energy absorption at fracture. Such behaviour is associated with small scale crack deflection as main toughening mechanism.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
J.J. Roa, R. RodrÃguez, V. Lamelas, R. MartÃnez, E. Jiménez-Piqué, L. Llanes,