| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering V
|
| Presentation Title |
Single Step Sputtered Chromium Nitride Nano-clusters Coating for Enhanced Mechanical, Wetting and Corrosion Protection Properties |
| Author(s) |
Ankit Kumar, Rahul S. Mulik |
| On-Site Speaker (Planned) |
Ankit Kumar |
| Abstract Scope |
Chromium Nitride (CrN) coating on the market today is known as very hard ceramic coating, most commonly developed on metallic alloys surfaces such as aluminum alloy (Al-7079). In this work, a hydrophobic Chromium nitride (CrN) nano-clusters surface was successfully developed via an industrial used PVD technique. The hardness, corrosion properties and wettability of CrN surface were examined using nanoindentation, electrochemical and contact angle measurements. The obtained results reveal the formation of hierarchal surface of the coating with a low surface energy on the Al-7079 surface, which confers eminent hydrophobicity with a water contact angle (WCA) of 121.8° and an anisotropy of approximately ±2°. Maximum wear resistance (H/Er ~ 0.066) and maximum resistance to fatigue fracture (H3/Er2 ~ 0.070 GPa) have been obtained. Potentiodynamic polarization curve and EIS tests revealed that the eminent hydrophobic surface significantly enhanced the anti-corrosion characteristics of Al-7079 specimen in 3.5 wt % NaCl solution. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Characterization, Environmental Effects |