| 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 |
| Volume: | 2 |
| Issue: | 6 |
| 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 |
