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

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

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.

Original languageEnglish
Title of host publication22nd IMEKO TC3 International Conference on Measurement of Force, Mass and Torque 2014, Held Together with TC5 and TC22
Pages17-20
Number of pages4
Publication statusPublished - 2014
MoE publication typeA4 Article in a conference publication
Event22nd IMEKO TC3 International Conference on Measurement of Force, Mass and Torque 2014, Held Together with TC5 and TC22 - Cape Town, South Africa
Duration: 3 Feb 20146 Feb 2014

Conference

Conference22nd IMEKO TC3 International Conference on Measurement of Force, Mass and Torque 2014, Held Together with TC5 and TC22
CountrySouth Africa
CityCape Town
Period3/02/146/02/14

Fingerprint

Stainless Steel
Hydrogen
Cleaning
Atomic force microscopy
Stainless steel
Plasmas
Contamination
Ultrasonic cleaning
Weighing
Ethanol
Adsorption

Keywords

  • AFM
  • Hydrogen plasma cleaning
  • Stainless steel weight
  • Surface contamination

Cite this

Högström, R., Riski, K., Ojanen, M., & Heinonen, M. (2014). Atomic force microscopy study on the effect of low-pressure hydrogen plasma cleaning on stainless steel weights. In 22nd IMEKO TC3 International Conference on Measurement of Force, Mass and Torque 2014, Held Together with TC5 and TC22 (pp. 17-20)
Högström, R. ; Riski, K. ; Ojanen, M. ; Heinonen, M. / Atomic force microscopy study on the effect of low-pressure hydrogen plasma cleaning on stainless steel weights. 22nd IMEKO TC3 International Conference on Measurement of Force, Mass and Torque 2014, Held Together with TC5 and TC22. 2014. pp. 17-20
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Högström, R, Riski, K, Ojanen, M & Heinonen, M 2014, Atomic force microscopy study on the effect of low-pressure hydrogen plasma cleaning on stainless steel weights. in 22nd IMEKO TC3 International Conference on Measurement of Force, Mass and Torque 2014, Held Together with TC5 and TC22. pp. 17-20, 22nd IMEKO TC3 International Conference on Measurement of Force, Mass and Torque 2014, Held Together with TC5 and TC22, Cape Town, South Africa, 3/02/14.

Atomic force microscopy study on the effect of low-pressure hydrogen plasma cleaning on stainless steel weights. / Högström, R.; Riski, K.; Ojanen, M.; Heinonen, M.

22nd IMEKO TC3 International Conference on Measurement of Force, Mass and Torque 2014, Held Together with TC5 and TC22. 2014. p. 17-20.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AU - Högström, R.

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AU - Ojanen, M.

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PY - 2014

Y1 - 2014

N2 - 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.

AB - 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.

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Högström R, Riski K, Ojanen M, Heinonen M. Atomic force microscopy study on the effect of low-pressure hydrogen plasma cleaning on stainless steel weights. In 22nd IMEKO TC3 International Conference on Measurement of Force, Mass and Torque 2014, Held Together with TC5 and TC22. 2014. p. 17-20