MODELLING HYDROGEN PERMEATION IN A HYDROGEN EFFUSION PROBE FOR MONITORING CORROSION OF CARBON STEELS
39th Annual CNS-CNA Student Conference - 2015 June 01


Presented at:
39th Annual CNS-CNA Student Conference
2015 June 01
Location:
Toronto, Canada
Session Title:
Student Session

Authors:
P. Santiwiparat (University of New Brunswick)
T. Rirksomboon (Chulalongkorn University)
F. R. Steward (University of New Brunswick)
D. H. Lister (University of New Brunswick)
W. G. Cook (University of New Brunswick)
  

Abstract

Hydrogen accumulation inside carbon steel and stainless steel devices shaped like cylindrical cups attached to a pipe containing hydrogen gas was modelled with MATLAB software. Hydrogen transfer around the bottom of the cups (edge effect) and diffusion through the cup walls (material effect) were accounted for. The variation of hydrogen pressure with time was similar for both materials, but the hydrogen plateau pressures in stainless steel cups were dramatically higher than those in carbon steel cups. The geometry of the cup affected significantly the plateau pressure inside the cup.

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