ATOMIC FORCE MICROSCOPY STUDY ON THE EFFECT OF LOW-PRESSURE HYDROGEN PLASMA CLEANING ON STAINLESS STEEL WEIGHTS |
|---|
| R. Högström, K. Riski, M. Ojanen, M. Heinonen |
- Abstract:
- Despite the new definition of the Kilogram, physical weights prone to contamination will still be used in the dissemination of the unit. Cleaning is applied to bring the weight surface to a well-defined state to allow predictable adsorption behaviour. Currently used mechanical cleaning methods show poor reproducibility. Therefore, non-contact cleaning techniques such as plasma cleaning have been introduced. In this study, the applicability of low-pressure hydrogen plasma for cleaning stainless steel weights was studied using atomic force microscopy (AFM) and gravimetric weighing. Results show that hydrogen plasma effectively removes surface contamination without damaging the surface. Successive ultrasonic cleaning in ethanol did not considerably reduce surface contamination.
- Keywords:
- AFM, hydrogen plasma cleaning, stainless steel weight, surface contamination
- Download:
- IMEKO-TC3-2014-004.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC3
- Event name:
- TC3 Conference 2014
- Title:
22nd Conference on the Measurement of Force, Mass and Torque (together with 3rd TC22 Conference on Vibration Measurement and 12th TC5 Conference on the Measurement of Hardness)
- Place:
- Cape Town, SOUTH AFRICA
- Time:
- 03 February 2014 - 06 February 2014