Measurement of lattice and apparent diffusion coefficient of hydrogen in X65 and F22 pipeline steels |
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| Authors: | E. Fallahmohammadi F. BolzoniL. Lazzari |
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| Affiliation: | Politecnico di Milano, Dipartimento di Chimica, Materiali ed Ingegneria Chimica “Giulio Natta”, Via Mancinelli 7, Milano 20131, Lombardia, Italy |
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| Abstract: | The permeation through and desorption of hydrogen from cathodically charged micro-alloyed API 5L X65 and low alloy ASTM A182 F22 steels were investigated with the aim to analyse the trapping parameters by means of the electrochemical method developed by Devanathan and Stachurski. The lattice diffusivity of hydrogen as well as the amounts and distribution of the diffusible and trapped hydrogen were found by means of partial permeation transient. |
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| Keywords: | Pipeline steels Hydrogen diffusivity Hydrogen absorption Hydrogen trapping Desorption |
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