A New Method to Determine the Activation Energy for Hydrogen Desorption from Steels

Abstract:

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A new method has been developed to determine the activation energy for hydrogen desorption from steels by means of thermal desorption spectrometry (TDS). This method directly fits the Kissinger’s reaction kinetic formula dX/dt=A(1-X)exp(-Ed/RT) to experimentally measured thermal desorption spectrum and best fit yields the activation energy (Ed) and the value of constant A. It has been proven that this new method is applicable to precise measurement of the activation energy for hydrogen desorption from incoherent TiC particle, coherent TiC precipitate, grain boundary and dislocation in 0.05C-0.20Ti-2.0Ni and 0.42C-0.30Ti steels.

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

229-232

DOI:

10.4028/www.scientific.net/MSF.475-479.229

Citation:

F. G. Wei et al., "A New Method to Determine the Activation Energy for Hydrogen Desorption from Steels", Materials Science Forum, Vols. 475-479, pp. 229-232, 2005

Online since:

January 2005

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Price:

$35.00

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