Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Ewa Rönnebro"'
Publikováno v:
Solid State Ionics. 176:2749-2757
Intermetallic composite compounds, i.e. Ag 52 Sn 48 , Ag 36.4 Sb 15.6 Sn 48 and Ag 36.4 Fe 15.6 Sn 48 , were lithiated by mechanical grinding in order to compare with electrochemical lithiation of corresponding nanocomposite alloy with respect to lit
Publikováno v:
Journal of Alloys and Compounds. 385:276-282
In situ synchrotron X-ray experiments were performed on Mg2NiH4 under high pressures (
Autor:
Shigeru Katsuyama, Tetsuo Sakai, Yasufumi Tsuji, Atsushi Ueda, Naoyuki Kitamura, Mikio Ito, Dag Noréus, Daisuke Kyoi, Ewa Rönnebro, Shigeta Hara, Toyoto Sato
Publikováno v:
Journal of Alloys and Compounds. 375:253-258
This thesis is focused on structural investigations of novel interstitial ternary alkaline-earth–transition metal hydrides formed by immiscible metals that are held together by the presence of hydrogen atoms. The contents are divided in two parts:
Autor:
Shigeta Hara, Toyoto Sato, Mikio Ito, Tetsuo Sakai, Atsushi Ueda, Ewa Rönnebro, Dag Noréus, Shigeru Katsuyama, Daisuke Kyoi, Naoyuki Kitamura
Publikováno v:
Journal of Alloys and Compounds. 372:213-217
A magnesium based titanium doped hydride was prepared in a high-pressure anvil cell by reacting a mixture of MgH2 and TiH1.9 at 8 GPa and 873 K. The metal structure has a Ca7Ge type structure (a=9.532(2) A, space group Fm 3 m (no. 225), Z=4, V=866.06
Autor:
Dag Noréus, Ewa Rönnebro
Publikováno v:
Applied Surface Science. 228:115-119
Very small amounts of air have been observed to oxidise the surface of the ternary hydride Mg 2 NiH 4 . This leads to a profound color change from orange to brown and to a sealing of the surface with respect to desorption, which can be mistaken for a
Publikováno v:
Journal of Alloys and Compounds. 368:279-282
With modern X-ray diffraction refinement methods it was possible to identify the first phase in the Mg–Cr–H system, Mg 3 CrH ∼6 from minute sample volume in spite of poor crystallinity and coexisting impurity phases. The new hydride was synthes
Autor:
Tetsuo Sakai, Atsushi Ueda, Daisuke Kyoi, Shigeru Katsuyama, Ewa Rönnebro, Naoyuki Kitamura, Mikio Ito
Publikováno v:
Journal of Alloys and Compounds. 361:252-256
The occurrence of new magnesium-based ternary hydrides of chromium was investigated by using the gigapascal high-pressure thermal technique. Powders of MgH 2 and Cr in the molar relation of 3:1 were compressed at a pressure up to 8 GPa by using a mul
Publikováno v:
Journal of Alloys and Compounds. 358:82-86
Publikováno v:
Journal of Alloys and Compounds. :697-700
In situ X-ray diffraction measurements were made on Mg 2 NiH 4 under high pressures (≤5 GPa) and temperatures (≤600 °C), with and without an internal hydrogen source [LiAlH 4 or NaBH 4 +Ca(OH) 2 ]. The transformation from the monoclinic low-temp
Publikováno v:
Journal of Alloys and Compounds. 358:216-222
The gigapascal pressure thermal technique was described in detail as a new tool to produce new ternary metal hydrides. Thus, the occurrence of new phases in the A–Pd–H (A=Li, Na or Mg) system was investigated. The samples were subjected to pressu