Publication details

Authors: Konchady, M. S.; Yarmolenko, S.; Pai, D. M.; Sankar, J.; Kvit, A. V. 
Title: Nanoscratch behaviour, structure and nanoindentation of multilayer TiN/CrN coatings 
Type: Journal Article 
Publisher: International Journal of Surface Science and Engineering 
Year: 2008 
Start Page: 439 
End Page: 456 
Abstract: The nanoscratch behaviour of TiN/CrN nanolaminates has been investigated in the present study. The critical load (LC(L)) during the loading process characterises the fracture resistance of the coating, whereas that during unloading (Lc(U)), characterises the adhesion strength between the coating and the substrate. For all coatings, the nanoscratch profiles indicate three distinct regimes: elastic deformation, elastic-plastic deformation and delamination with material removal. Multilayer coatings show significantly higher critical loads than monolayer coatings. SEM characterisation indicates the cracking mechanisms are different for monolayer and multilayer coatings explaining why the multilayer coatings withstand higher critical loads. 
Keywords: tin/crn nanolaminates, x-ray diffraction, xtem, nanoindentation, residual stress, nanoscratch, delamination, amorphous-carbon films, mechanical-properties, hard coatings, tribological properties, thermal-stability, low-temperature, fretting wear, dlc coatings, nano-scratch, deposition