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10292 Influence of Temperature and Hydrostatic Pressure on Hydrogen Diffusivity and Permeability in 13% CR Super Martensitic Stainless Steel Under Cathodic Protection

Picture for 10292 Influence of Temperature and Hydrostatic Pressure on Hydrogen Diffusivity and Permeability
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Product Number: 51300-10292-SG
ISBN: 10292 2010 CP
Author: Anna Smirnova, Roy Johnsen, and Kemal Nisancioglu
Publication Date: 2010
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New equipment has been developed to study hydrogen diffusion in metals at different temperatures, mechanical loads and hydrostatic pressures. The hydrogen permeation measurement method is based on the electrochemical hydrogen permeation technique developed by Devanathan and Stachurski. The paper presents equipment design, capabilities and limitations. Hydrogen diffusivity and permeability in 13%Cr super martensitic stainless steel was studied at 20, 50 and 80ºC and at atmospheric and 100 bar hydrostatic pressure. The effective hydrogen diffusion coefficient increased with temperature according to the Arrhenius equation. Application of 100 bar hydrostatic pressure at 80ºC did not influence the hydrogen concentration in the test material relative to that obtained at atmospheric pressure.

Keywords: super martensitic stainless steel, cathodic protection, hydrogen permeation, hydrogen diffusion
New equipment has been developed to study hydrogen diffusion in metals at different temperatures, mechanical loads and hydrostatic pressures. The hydrogen permeation measurement method is based on the electrochemical hydrogen permeation technique developed by Devanathan and Stachurski. The paper presents equipment design, capabilities and limitations. Hydrogen diffusivity and permeability in 13%Cr super martensitic stainless steel was studied at 20, 50 and 80ºC and at atmospheric and 100 bar hydrostatic pressure. The effective hydrogen diffusion coefficient increased with temperature according to the Arrhenius equation. Application of 100 bar hydrostatic pressure at 80ºC did not influence the hydrogen concentration in the test material relative to that obtained at atmospheric pressure.

Keywords: super martensitic stainless steel, cathodic protection, hydrogen permeation, hydrogen diffusion
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