Hydrogen embrittlement assisted by ball-milling to obtain AlCuFe nanoparticles

An Al 58 Cu 25 Fe 17 alloy composition was produced by conventional casting technique. In order to take advantage from the hydrogen-environmental embrittlement reaction, which affects these alloys, this research was carried out subjecting prealloyed powders to wet-ball milling. Through these experiments it has been possible to evaluate the particle size reduction as consequence of hydrogen fracture and milling energy. The morphological and structural characteristics of the samples were performed using x-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM). The experimental results indicate that the samples with higher contents of humidity have a good particle size reduction. With the increment of milling time, the particle size was diminished even more reaching nanometer size scale.

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“…Nanocrystals agglomeration embedded in a ceramic matrix can also be observed. These results are agreement with previous authors [9].…”

Section: Methodssupporting

confidence: 94%

“…Hydrogen diffuses inside of the intermetallic alloy and induces bond instability and causes cleavage fracture of the material. Recently, has been demonstrated that the ball milling under humidity conditions can be used to produce nanoparticles [9]. These experiments were carried out using high aluminum at% alloys.…”

Section: Introductionmentioning

confidence: 99%

Electron Microscopy Characterization of Humidity Ball-Milling AlCuFe Intermetallic Powders

et al. 2009

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“…It is well known that the crystal size reduction at nanoscale regime improve the mechanical properties. Mechanical milling/alloying (MM/MA) is a specific technique to obtain crystals with nanometric size dimensions [4]. However, it is well known that this technique can induce disordering in ordered materials.…”

Section: Introductionmentioning

confidence: 99%

XRD and HREM studies from the decomposition of icosahedral AlCuFe single-phase by high-energy ball milling

Patiño-Carachure

Téllez-Vázquez

Rosas

2011

Journal of Alloys and Compounds

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“…One of the promising metals for releasing hydrogen is aluminum and its alloys. On the other hand, CuAl 2 intermetallic material is susceptible to hydrogen environmental embrittlement [1][2][3]. In this process the water vapor in the air reacts with aluminum of intermetallic alloy releasing hydrogen.…”

Section: Introductionmentioning

confidence: 99%

CuAl<sub>2</sub> Intermetallic Hydrogen Evaluation after Mechanical Activation of Powders

López-Miranda¹,

Reyes-Hernández²,

Hernández-Torres³

et al. 2014

MSF

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Water vapor in the air affects aluminum based intermetallic compounds to form hydrogen. We take advantage of this fact to explore the amount of hydrogen obtained from CuAl2 intermetallic after its mechanical attrition activation. For this propose, CuAl2 intermetallic alloy was first produced by conventional casting methods and then subjected to mechanical milling processing. After the mechanical activation of the CuAl2 powders, a chemical reaction between them and water was carried out at room temperature including additives such as CaO, Al and NaCl. The amount of hydrogen release was correlated with other phases produced after the chemical reaction. X-ray diffraction patterns and scanning electron microscopy studies indicates that these phases were aluminum hydroxides and cupper oxides. According to these studies, a significant presence of oxide and hydroxide products occurred in the samples with NaCl additions, indicating best capability for hydrogen generation.

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Hydrogen embrittlement assisted by ball-milling to obtain AlCuFe nanoparticles

Cited by 11 publications

References 21 publications

Electron Microscopy Characterization of Humidity Ball-Milling AlCuFe Intermetallic Powders

Electron Microscopy Characterization of Humidity Ball-Milling AlCuFe Intermetallic Powders

XRD and HREM studies from the decomposition of icosahedral AlCuFe single-phase by high-energy ball milling

CuAl<sub>2</sub> Intermetallic Hydrogen Evaluation after Mechanical Activation of Powders

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