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Updated: Jun 4, 2026

Measurement of Outgassing Rates of Steels
Published on: December 13, 2016
Oxygen diffusion in grain boundaries: a ToF-SIMS investigation on hot-rolled steel sheets
Markus Holzweber1, Markus Kriegl, Arno Schintlmeister
1Institute of Chemical Technologies and Analytics, Vienna University of Technology, Austria.
Abstract:
A study of grain boundary diffusion of oxygen in hot-rolled steel sheets is carried out by means of time-of-flight secondary-ion-mass-spectrometry (ToF-SIMS). This involves polishing of the sample surface prior to the oxygen exposure. A nickel layer deposited after exposure ensures a homogeneous extraction field for ToF-SIMS measurements at the Ni-steel interface. The sample is bevelled at an angle of 11.5° to spread up the diffusion pathway by a factor of 5. The oxygen distribution is then acquired via ToF-SIMS in imaging mode from which diffusion parameters are calculated according to the Whipple-Le Claire's approach.
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