The hydrogen storage characteristics of Ti–Cr–V alloys

Cho, Sung Wook; Han, Chang Suck; Park, Choong Nyeon; Akiba, Etsuo

doi:10.1016/s0925-8388(99)00096-1

Cited by 139 publications

(82 citation statements)

References 6 publications

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“…Some of the identified shortcomings of these alloys include poor pressure-concertation-temperature (PCT) plateau characteristics, low hydrogen desorption capacities, and long activation times [4][5][6][7]. In an attempt to improve on these shortcomings, controlled quantities of additives such as Fe, Zr and Mn have been found to be effective in lowering cost and enhancing the overall performance of the alloy [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Storage Characteristics and Corrosion Behavior of V-rich Ti-V-Cr-Fe Alloy

Abdul¹,

Chown²,

Odusote³

et al. 2017

Preprint

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Abstract:In this work, we investigated the effects of heat treatment on the microstructure, hydrogen storage characteristics and corrosion rate of a Ti34V40Cr24Fe2 alloy. The arc melted alloy was divided into three samples, two of which were separately quartz-sealed under vacuum and heated to 1000 °C for 1 h; one of these samples was quenched and the other furnace cooled to ambient temperature. The crystal structures of the samples were studied via X-ray diffractometry and scanning electron microscopy. Absorption/desorption characteristics were investigated using a Sievert apparatus. Potentiostat corrosion tests on the alloys were performed using an AutoLab ® corrosion test apparatus and electrochemical cell. All samples exhibited a mixture of body-center-cubic (BCC) and Laves phase structures. The corrosion rate, maximum absorption, and useful capacities increased after both heat treatments. The annealed sample had the highest absorption and reversible capacity. The plateau pressure of the as-cast alloy increased after quenching. The corrosion rate increased from 0.0004 mm/y in as-cast sample to 0.0009 mm/y after annealing and 0.0017 mm/y after quenching, due to a decrease in the Cr-content of the C14 phase.

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Section: Introductionmentioning

confidence: 99%

Hydrogen Storage Characteristics and Corrosion Behavior of V-rich Ti-V-Cr-Fe Alloy

Abdul¹,

Chown²,

Odusote³

et al. 2017

Preprint

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show abstract

“…Some of the identified shortcomings of these alloys include poor pressure-composition-temperature (PCT) plateau characteristics, low hydrogen desorption capacities, and long activation times [4][5][6][7]. In an attempt to improve on these shortcomings, controlled quantities of additives such as Fe, Zr, and Mn have been found to be effective in lowering cost and enhancing the overall performance of the alloy [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Storage Characteristics and Corrosion Behavior of Ti24V40Cr34Fe2 Alloy

et al. 2017

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Abstract:In this work, we investigated the effects of heat treatment on the microstructure, hydrogen storage characteristics and corrosion rate of a Ti 34 V 40 Cr 24 Fe 2 alloy. The arc melted alloy was divided into three samples, two of which were separately quartz-sealed under vacuum and heated to 1000 • C for 1 h; one of these samples was quenched and the other furnace-cooled to ambient temperature. The crystal structures of the samples were studied via X-ray diffractometry and scanning electron microscopy. Hydrogenation/dehydrogenation characteristics were investigated using a Sievert apparatus. Potentiostat corrosion tests on the alloys were performed using an AutoLab ® corrosion test apparatus and electrochemical cell. All samples exhibited a major body-center-cubic (BCC) and some secondary phases. An abundance of Laves phases that were found in the as-cast sample reduced with annealing and disappeared in the quenched sample. Beside suppressing Laves phase, annealing also introduced a Ti-rich phase. The corrosion rate, maximum absorption, and useful capacities increased after both heat treatments. The annealed sample had the highest absorption and reversible capacity. The plateau pressure of the as-cast alloy increased after quenching. The corrosion rate increased from 0.0004 mm/y in the as-cast sample to 0.0009 mm/y after annealing and 0.0017 mm/y after quenching.

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“…Metal hydrides are a safe and economical way to store hydrogen compared to pressurized tanks and cryogenic 1 storages. Cho et al 2 , showed that alloys with bcc structure, particularly TiVCr system have the advantage of absorbing large amounts of hydrogen at room temperature. Dos Santos et al 3 , studying the TiCrV system, observed that TiCr 1.1 V 0.9 alloy reaches a weight percentage of 3.55 wt.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen absorption/desorption properties in the TiCrV based alloys

Martínez

Santos

2012

Mat. Res.

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Three different Ti-based alloys with bcc structure and Laves phase were studied. The TiCr 1.1 V 0.9 , TiCr 1.1 V 0.45 Nb 0.45 and TiCr 1.1 V 0.9 + 4%Zr 7 Ni 10 alloys were melted in arc furnace under argon atmosphere. The hydrogen absorption capacity was measured by using aparatus type Sievert's. Crystal structures, and the lattice parameters were determined by using X-ray diffraction, XRD. Microestructural analysis was performed by scanning electron microscope, SEM and electron dispersive X-ray, EDS. The hydrogen storage capacity attained a value of 3.6 wt. (%) for TiCr 1.1 V 0.9 alloy in a time of 9 minutes, 3.3 wt. (%) for TiCr 1.1 V 0.45 Nb 0.45 alloy in a time of 7 minutes and 3.6 wt. (%) TiCr 1.1 V 0.9 + 4%Zr 7 Ni 10 with an increase of the hydrogen absorption kinetics attained in 2 minutes. This indicates that the addition of Nb and 4%Zr 7 Ni 10 to the TiCrV alloy acts as catalysts to accelerate the hydrogen absorption kinetics.

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The hydrogen storage characteristics of Ti–Cr–V alloys

Cited by 139 publications

References 6 publications

Hydrogen Storage Characteristics and Corrosion Behavior of V-rich Ti-V-Cr-Fe Alloy

Hydrogen Storage Characteristics and Corrosion Behavior of V-rich Ti-V-Cr-Fe Alloy

Hydrogen Storage Characteristics and Corrosion Behavior of Ti24V40Cr34Fe2 Alloy

Hydrogen absorption/desorption properties in the TiCrV based alloys

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