Hydrogen permeation in gamma titanium aluminides
Source abstract
Abstract
Abstract The permeation of hydrogen in gamma titanium aluminides was studied using the Devanathan–Stachurski (DS) cell. Thin disk-shaped samples of gamma titanium aluminide with three different microstructures were appropriately prepared and cathodically charged in an aqueous 0.1 N NaOH solution. The permeation current was monitored as a function of time. Permeation parameters were calculated using the time lag criterion (non-steady state lag). Values of the apparent diffusion coefficient of hydrogen in gamma titanium aluminide varying from 1.87 × 10 −7 cm 2 /s to 3.75 × 10 −6 cm 2 /s were obtained. This slight variation is attributed to differences in microstructure.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · Nuclear Materials and Properties · Fusion materials and technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (19)
Show source-provided references
1. Titanium aluminides – an overview10.1557/PROC-39-351 ↗
2. Intermetallic alloys based on gamma titanium aluminide
3. Hydrogen and advanced aerospace materials
4. Environmental effects in titanium aluminide alloys
5. Hydrogen solubility in a titanium aluminide alloy10.1016/0956-7151(92)90393-S ↗
6. The effect of high pressure hydrogen charging on microstructure and mechanical behaviour of a cast γ+α2 titanium aluminide
7. Determination of the diffusion coefficient of hydrogen in gamma titanium aluminides during electrolytic charging10.1016/S1359-6454(99)00431-0 ↗
8. The adsorption and diffusion of electrolytic hydrogen in palladium10.1098/rspa.1962.0205 ↗
9. Hydride structures in titanium aluminides subjected to high temperature and hydrogen pressure charging conditions10.1557/JMR.1991.1230 ↗
10. Surface precipitation after cathodic charging of hydrogen and heat treatment in air for the TiAl intermetallic compounds10.1016/0956-716X(92)90220-9 ↗
11. A study of hydride in TiAl after cathodic charging10.1016/0956-716X(92)90603-C ↗
12. Hydrogen solubility of two-phase (Ti3Al+TiAl) titanium aluminides10.1016/0956-716X(95)00018-Q ↗
13. Process and properties of hydride formed on gamma titanium aluminide during cathodic charging10.1016/j.jallcom.2005.03.046 ↗
14. Use of electrochemical methods to determine chemical-diffusion coefficients in alloys: Application to ‘LiAl’
15. Effects of hydrogen on the properties of iron and steel10.1007/BF02654700 ↗
16. Hydrogen occlusion and hydride formation in titanium aluminides
17. Hydrogen evolution from cathodically charged two-phase (Ti3Al+TiAl) titanium aluminides10.1016/0925-8388(95)01524-8 ↗
18. Hydrogen effusion in cathodically charged gamma titanium aluminides10.1016/S0925-8388(99)00632-5 ↗
19. Diffusion of hydrogen in titanium