About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advances in Materials and Systems for a Hydrogen Economy
|
| Presentation Title |
Friction and Wear Characteristics of Hydrogen-Aged DLC and MoS2 Coatings |
| Author(s) |
Julian Long, Kylie Van Meter, Catherine Fidd, Santiago Lazarte, Craig Barbour, Joshua Turner, Yan Xin, Tomas Babuska, William Oates, Fumitake Kametani, James Schall, Nicolas Argibay, Brandon Krick |
| On-Site Speaker (Planned) |
Julian Long |
| Abstract Scope |
The current interest in the development of hydrogen-fueled systems, such as turbines, drives a need to understand the impact of prolonged hydrogen exposure at high temperatures on structural materials and coatings. Diamond-like carbon (DLC) and MoS2 coatings are both solid lubricants utilized in the aerospace industry for their low friction and wear rates, both having potential applications in hydrogen energy systems. This work seeks to examine the effects of the high-temperature hydrogen environment on the tribological performance of the two films. DLC and MoS2 coatings were aged in 1 atm H2 at temperatures of 300-700 °C. Hydrogen aging at increasing temperatures had either positive or minimal impact on the run-in and steady state tribological behavior of both films, until both films began to degrade at 700 °C. The film materials were also characterized to link changes in material structure and surface chemistry to tribological performance. |