Thermodynamics approach to the hydrogen diffusion and phase transformation in titanium particles
Gao, Weimin, Li, Weiqi, Zhou, Jin and Hodgson, Peter 2011, Thermodynamics approach to the hydrogen diffusion and phase transformation in titanium particles, Journal of alloys and compounds, vol. 509, no. 5, pp. 2523-2529.
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Thermodynamics approach to the hydrogen diffusion and phase transformation in titanium particles
The hydrogen diffusion and phase transformation in a titanium particle were studied based on thermodynamic calculation. The mechanisms of hydrogen diffusion in different phases (alpha-Ti, beta-Ti and TiHx) were analyzed. A mobility database was developed for titanium– hydrogen system based on the experimental works on hydrogen diffusion coefficient reported in literature and the fundamental of diffusion. To implement the calculation, a commercial software package for the simulation of diffusion-controlled phase transformation was used. The hydrogen diffusion process, hydrogen distribution, phase transformation and phase growth rate during hydrogenization of a titanium particle at temperatures of 560 K, 800K and 1000K were discussed. The thermodynamics and kinetics analysis provided quantitative insight into the diffusion process and improved the understanding of diffusion mechanism and phase transformation.
Language
eng
Field of Research
091207 Metals and Alloy Materials 091006 Manufacturing Processes and Technologies (excl Textiles) 030602 Chemical Thermodynamics and Energetics
Socio Economic Objective
861199 Basic Metal Products (incl. Smelting, Rolling, Drawing and Extruding) not elsewhere classified