29th Symposium on Fusion Technology (SOFT 2016)

P2.143 Investigation and Optimization of Molybdenum Disulfide Parameters for Low Friction Coating

6 Sep 2016, 14:20

1h 40m

Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Board: 143

Poster G. Vessel/In-Vessel Engineering and Remote Handling P2 Poster session

Speaker

Heejin Shim (Blanket Technology Team)

Description

Molybdenum disulfide (MoS2) coating was deposited by magnetron sputtering onto the target material. The coatings of deposited MoS2 can be used in high vacuum and aerospace environments for lubrications purposes, which ultra-low friction is desirable. For these reason, the sputtered MoS2 coating method is primarily considered for ITER components and their mechanical assemblies. A common deposition technique widely used is sputtering, the sputtering process is ideally suited to coat precision mechanical components with exquisitely thin, uniform thickness. It also permits friction coefficient and durability of the MoS2 coating. However, its application of sputtering to surfaces by the technique of depositions is a complex process involving many variables. Usually, since very thin MoS2 coating are used for frictional control, it is important to understand the relationship between the sputtering conditions, their friction and wear behavior. Therefore, it seems necessary to investigate the conditions and effects of MoS2 parameter to achieve the best coating having the desirable qualities. The objective of this study is to describe the understanding of coating process and obtained the optimal MoS2 parameters using the experiments design which is central composite design. To achieve the best surface quality, the task will be optimized by sputter-depositing MoS2 disc under various conditions of Argon gas pressure, initial surface finish and sputtering power. Moreover, the evaluating the measurement of friction coefficient and coating thickness were performed using a pin-on-disc apparatus.