Effect of Sodium Sulfide on Hydrogen Absorption of Ti-6% Al-4% V Alloy
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 374-380 |
| Journal / Publication | Corrosion |
| Volume | 53 |
| Issue number | 5 |
| Publication status | Published - May 1997 |
| Externally published | Yes |
Link(s)
Abstract
The hydrogenation inhibitive effect of sodium sulfide (Na2S) on Ti-6% Al-4% V alloy (UNS R56400) in aqueous sulfuric acid solution (H2SO4[aq]) was investigated qualitatively and quantitatively using optical microscopy, x-ray diffraction (XRD), and glow-discharge spectrometry (GDS). Introduction of Na2S into the electrolyte resulted in an obvious inhibitive effect of hydrogen absorption on as-received (covered with a thin thermal oxide film < 0.5 μm) and abraded specimens (free of thermal oxide film) irrespective of applied current density and operating period. The contrary effect of Na2S on Ti-6% Al-4% V alloy vs ferrous alloys could have resulted from the fact that molecular hydrogen sulfide (H2S), which adsorbed on the titanium surface as on the iron surface, facilitated formation of a thin layer of ε titanium hydride (TiH2). TiH2 effectively retarded ingress of hydrogen.
Research Area(s)
- Cathodic polarization, Concentration depth profiles, Glow-discharge spectrometer, Hydrogen uptake efficiency, Hydrogenation, Inhibitors, Sodium sulfide, Thermal oxide film, Titanium alloys, Titanium hydride, X-ray diffraction
Citation Format(s)
Effect of Sodium Sulfide on Hydrogen Absorption of Ti-6% Al-4% V Alloy. / Wu, T. I.; Liu, C. T.; Wu, J. K.
In: Corrosion, Vol. 53, No. 5, 05.1997, p. 374-380.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
