| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering VI
|
| Presentation Title |
Using Performance Driven Coating Development to Explore Process-structure Relationships of Molybdenum Disulfide Coatings |
| Author(s) |
Tomas F. Babuska, Michael T Dugger, Mark Rodriguez, Steven Larson, John F Curry |
| On-Site Speaker (Planned) |
Tomas F. Babuska |
| Abstract Scope |
Sputter-deposited molybdenum disulfide (MoS2) coatings have been used for decades in aerospace applications due to their ultra-low steady-state coefficients of friction (µss < 0.05). While MoS2 is chosen because of its low µss, MoS2 coatings can have 3-5x higher initial coefficients of friction (µi ~ 0.15 – 0.25) and variability in wear resistance (k ~ 5x10-8 – 1x10-4 mm3/Nm) depending on the resultant coating microstructure. Developing MoS2 coatings for demanding applications with predictable and reliable performance (structure-property) over time (i.e., high-quality) requires tuning the coating microstructure through process variations (process-structure). In this work, we utilize end-use performance driven metrics such as wear rate and hardness to rapidly explore process-structure relationships and develop high-quality coatings that minimize property variations after oxidation. Additionally, we show that the developed performance metrics are suitable for quality control and can minimize batch-to-batch repeatability. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Mechanical Properties, Surface Modification and Coatings |