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1

Hydrogen ordering effects in Laves - phase YFe2

Ostrasz A.

Nukleonika

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2013

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Vol. 58, No. 1

77-81

EN

Mössbauer spectroscopy and X-ray diffraction measurements were performed before and after hydrogenation of YFe2 Laves phase in order to investigate the effect of hydrogen on their structural and magnetic properties. The experimental results show an instant change of both the lattice parameters and the hyperfine field. The results are interpreted due to the phase decomposition of the parent intermetallic in the aftermath of creation of stoichiometric hydrides YHc (c = 0.9; 2.5).

2

Generowanie lotnych połączeń kadmu, ołowiu i indu : zastosowanie do analizy próbek o złożonej matrycy

Popko M., Borkowska-Burnecka J.

Przemysł Chemiczny

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2010

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T. 89, nr 4

524-528

3

Electronic properties of LaNiIn doped with hydrogen

Wasylkowicz Ł., Jezierski A., Szytuła A., Penc B.

Materials Science Poland

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2007

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Vol. 25, No. 4

1229--1234

EN

Electronic properties of RNiInH (R = La,Ce,Nd) intermetallic hydrides were recently studied both experimentally and theoretically. In the present work, we study the influence of hydrogen on the electronic structure of LaNiIn. The electronic structure is calculated by Augmented Spin Wave (ASW) and Tight Binding Linear Muffin Tin Orbital methods within the spin density approximation. The doped hydrogen atoms modify the band structure near the Fermi level. The density of states at the Fermi level decreases with increasing hydrogen concentration but the compounds have metallic character.

4

Hydride Formation, Magnetic and Transport Properties of Nickel and Nickel-Based Alloys

Bauer H., Wagner F.

Polish Journal of Chemistry

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2004

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Vol. 78 / nr 4

463-514

EN

Dedicated to Prof. Dr. B. Baranowski in honour of his pioneering work on the nickel-hydrogen system and on the occasion of the 45th anniversary of the discovery of nickel hydride. We review the discovery of hydride formation in nickel and discuss how the incorporation of interstitial hydrogen into the metal lattice of nickel and some nickel-based alloys affects the magnetic and transport properties.

5

Free Energy of Hydride Formation in Pd-Ni Alloys System

Baranowski B., Dębowska L.

Polish Journal of Chemistry

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2003

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Vol. 77 / nr 9

1207-1212

EN

Formation and decomposition pressures of hydrides for Ni0.3Pd0.7, Ni0.5Pd0.5, Ni0.7Pd0.3 and Ni0.9Pd0.1 alloys have been determined by following the thermoelectric power of these alloys as function of hydrogen pressure at 298 K. From the desorption pressures the free energies of hydride formation were calculated. These results combined with literature data are discussed in terms of deviation from an ideal behavior. The dominance of nickel is clearly demonstrated, what could be expected from its large hydride formation pressure in comparison with palladium hydride. The term "excess free energy of formation" is introduced and discussed for the alloy system treated.

6

Źródła błędów w technice generowania wodorków

Niedzielski P.

LAB Laboratoria, Aparatura, Badania

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2003

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R. 8, nr 1

10-12

PL

Troska o środowisko przyrodnicze ma odbicie w ustalaniu nowych normatywów prawnych określających najniższe dopuszczalne stężenia różnych substancji. Śledzenie niskich stężeń, szerokiej gamy niebezpiecznych substancji, zanieczyszczeń, także wtórnych powstających w środowisku, wymaga odpowiedniego przygotowania i wprowadzenia próbki, a także aparatury analitycznej o specjalnych możliwościach.

7

Atomowa spektrometria fluorescencyjna z genereacją wodorków (HG-ASF), cz. II

Walas S.

Analityka : nauka i praktyka

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2002

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nr 3

9--12

PL

Powszechnie uważa się, że atomowa spekrometria absorpcyjna i atomowa spektrometria emisyjna stanowią dwa filary atomowej spektrometrii. Istnieje również trzecia, mniej znana metoda analityczna – atomowa spektrometria fluorescencyjna.

8

Investigation of ZrFe2 and ZrCo2 Under Very High Pressure of Gaseous Hydrogen and Deuterium

Filipek S. M., Jacob I., Paul-Boncour V., Percheron-Guegan A., Marchuk I., Mogilyanski D., Pielaszek J.

Polish Journal of Chemistry

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2001

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Vol. 75, nr 12

1921-1926

EN

New hydrides and deuterides of Laves cubic phases ZrFe2 and ZrCo2 were synthesized by high hydrogen (deuterium) pressure technique. For both Laves phases the symmetry of lattice does not change but a large expansion of lattice parameter (by 8% for ZrFe2 and by 4.5% for ZrCo2) occurs during hydrides (deuterides) formation. In contrast to the rela-tively stable hydride (if stored in an inert atmosphere) formed in ZrFe2, the ZrCo2H2 de-composes easily at 25°C. Large lattice expansion of ZrFe2 during the deuteride formation changes only slightly its magnetic properties.

9

Structural and hydriding properties of the AB2-system with nanostructure.

Jurczyk M., Leda H., Rajewski W.

Inżynieria Materiałowa

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1998

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R. XIX, nr 4

892-896

EN

The ZrV2/Ni and Zr0.35Ti0.65V0.85Cr0.25Ni1.30 alloy powders of nanometric -scale were succesfully synthesized by high-energy ball milling (HEBM) of precursor alloys in an argon atmosphere at room temperature. The relations between their structural and hydriding properties were investigated in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM) as well as by P-C-T and electrochemical measurements. In this work, we have found that electrochemical activity of ZrV2 can be simulated by HEBM of the alloy powder with Ni powder. X-ray and SEM analyses indicated that the elemental nickel is distributed on the surface of HEBM alloy particles homogeneously. The nanocomposite ZrV2/Ni powders showed an improved discharge capacity.