Effect of metal ions in a heated nitric acid solution on the corrosion behavior of a titanium–5% tantalum alloy in the hot nitric acid condensate

Sano, Yuichi; Takeuchi, Masayuki; Nakajima, Yasuo; Hirano, Hideki; Uchiyama, Gunzo; Nojima, Yasuo; Fujine, Sachio; Matsumoto, Satoshi

doi:10.1016/j.jnucmat.2012.08.009

Cited by 21 publications

(2 citation statements)

References 12 publications

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“…In Figure13(b), the O1s spectrum of the passive oxide layer displays two peaks, one of which is mostly attributable to the M-O of TiO 2 (530.7 eV). Another minor peak with higher binding energy (532.54 eV) implyies that the oxide coating contains absorbed water and/or OH, as reported by other researchers[51]. The presence of bound water can trap metal ions in the solution and build a new film on the passivation layer's surface, improving the metal's corrosion resistance[52].…”

mentioning

confidence: 76%

The bifunctional role played by thiocyanate anions on the active dissolution and the passive film of titanium in hydrochloric acid

Elshamy

Rehim

Ibrahim

et al. 2022

Corrosion Engineering, Science and Technology

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The electrochemical behaviour of titanium dissolution and passivation in HCl was examined with and without the SCN − anions using potentiodynamic polarisation, electrochemical impedance spectroscopy, and current transients techniques. The nature of the Ti oxide film was characterised by utilising XPS and SEM tools. The corrosion current i corr , the critical passivation current i cc , and the passive current i pass values increased significantly when the HCl concentration, scan rate, and temperature were raised. On the contrary, the addition of SCN − anions decreases the i corr value, indicating that the Ti dissolution was inhibited as a result of SCN − adsorption on the Ti surface. The inhibition efficiency increased with increasing the concentration of SCN − . However, SCN − anions lead to destabilised passivity in the passive zone. The formation of the Ti oxide film is a diffusion-controlled operation, as shown by the i-t curves. According to the XPS measurements, the passive oxide coating consists mainly of TiO 2 and less of Ti 2 O 3 .

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mentioning

confidence: 76%

The bifunctional role played by thiocyanate anions on the active dissolution and the passive film of titanium in hydrochloric acid

Elshamy

Rehim

Ibrahim

et al. 2022

Corrosion Engineering, Science and Technology

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“…The high specific strength and excellent corrosion resistance properties of titanium and its alloys make them the materials of choice in industrial applications [10][11][12][13][14]. The Ti-5Ta-1.8Nb alloy is being researched as a candidate structural material in spent nuclear fuel reprocessing applications.…”

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confidence: 99%

Comparison of Microtexture Evolution During Cryo and Room Temperature Rolling of Ti–5Ta–2Nb Alloy

Bhaskar

Dasgupta

Murugesan

et al. 2016

Trans Indian Inst Met

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An a ? b Ti-5Ta-2Nb alloy has been developed for applications under severe oxidizing conditions of boiling concentrated nitric acid in spent fuel reprocessing plant. The formation of nanocrystalline grains has been observed in the cryo-rolled sample accompanied by a significant improvement in yield strength whereas the grain refinement is not significant in case of room temperature rolled sample. Suppression of dynamic recovery plays a major role in the formation of nanostructured material. The evolution of micro-texture during room temperature rolling and cryo-rolling has been compared in this study. The rolling texture of room temperature and cryo-rolled samples are similar to the rolling texture predicted for hexagonal materials with c/a\1.6. XRD analysis indicates peaks shift to lower 2h with increase in rolling strains indicating the presence of tensile residual strains. Peak broadening is also observed indicating an increase in defect density and decrease in grain size.

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Imaging Dislocation Cores in Severe Plastically Deformed Nanocrystalline CP-Ti Alloy Through Geometrical Phase Analysis of Spherical Aberration-Corrected HRTEM Images

Ghosh

Dasgupta

2021

Applications of Microscopy in Materials and Life Sciences

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Effect of metal ions in a heated nitric acid solution on the corrosion behavior of a titanium–5% tantalum alloy in the hot nitric acid condensate

Cited by 21 publications

References 12 publications

The bifunctional role played by thiocyanate anions on the active dissolution and the passive film of titanium in hydrochloric acid

The bifunctional role played by thiocyanate anions on the active dissolution and the passive film of titanium in hydrochloric acid

Comparison of Microtexture Evolution During Cryo and Room Temperature Rolling of Ti–5Ta–2Nb Alloy

Imaging Dislocation Cores in Severe Plastically Deformed Nanocrystalline CP-Ti Alloy Through Geometrical Phase Analysis of Spherical Aberration-Corrected HRTEM Images

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