Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 490, Issue 1-2, Pages 562-567Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.10.081
Keywords
Kinetics; Hydrogen absorption/desorption; Incubation period; Rate constant; TG measurement
Categories
Funding
- NIN
- BAMTRI
Ask authors/readers for more resources
The kinetics of hydrogen absorption/desorption in TC21 alloy have been investigated under different initial hydrogen pressure at the temperature range of 575-850 degrees C. At lower temperature and initial hydrogen pressure, the incubation period was longer and the hydrogen pressure needed longer time to reach equilibrium. With the increase of temperature and initial hydrogen pressure, the incubation period decreased and even disappeared. At the second hydrogen absorption stage, the hydrogen absorption process obeyed 3-dimension diffusion process and the mechanism function was kt = [1 - (1 - alpha)(1/3)](2). The rate constant of hydrogen absorption increased with increasing temperature at the same stage. The activation energy of hydrogen absorption was found to be 38.43 kJ/mol. (C) 2009 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available