|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Advanced Manufacturing
||Carbon Based Coatings Deposited on Nitrided Stainless Steel: Study of Thermal Degradation
||Sonia P Brühl, Eugenia L Dalibon Bähler, Vladimir J Trava-Airoldi, Naureen Ghafoor, Lina Rogström, Magnus Oden
|On-Site Speaker (Planned)
||Sonia P Brühl
Amorphous hydrogenated carbon (DLC) coatings have a high hardness dependent in the relative amount of sp3/sp2 bondings. They exhibit also an extremely low friction coefficient and are chemically inert. But some applications are limited because adhesion is poor over soft substrates and it is also not stable at high temperatures, degrading into graphite and loosing hardness. In this work DLC coatings were deposited on precipitation hardening stainless steel (PH Corrax) which was plasma nitrided before the coating deposition. The samples were submitted to annealing treatments of an hour duration at different temperatures from 200 C to 600 C, together with a control group, only coated but not nitrided. After each annealing cycle, Raman Spectroscopy, nanoindentation and microscopy were used to check film properties.
It was demonstrated that the nitriding pre treatment improved not only adhesion but also the thermal stability of the DLC, slowing degradation and preventing delamination.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)