Home > Search Results: 999C1a:GA106/07/0010
Search:
Search Tips :: Advanced Search
Search collections:
Sort by: Display results: Output format:
National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Kinetika vodíku v Mg2Ni a v hydrogenovaném eutektiku Mg-Mg2Ni
 Čermák, Jiří ; Král, Lubomír ; Stloukal, Ivo
Time dependence of total amount of hydrogen desorbed from hydrogen-charged Mg and eutectic Mg-Mg2Ni (23.5 wt. % Ni) alloy was measured at temperatures from interval 552 – 723 K. Experiments were carried out well below the equilibrium pressure, where these hydrides – perspective as solid hydrogen storage media – are unstable and the desorption process is controlled mainly by diffusion of hydrogen in respective hydride (MgH2 and/or Mg2NiH4). Hydrogen diffusion coefficients were evaluated from desorption curves and hydrogen diffusion coefficient along interphase boundary MgH2/Mg2NiH4 was estimated from results obtained with the eutectic alloy.
Detailed record
Strukturní změny ve slitinách Mg-Ni po absorpci a desorpci vodíku
 Král, Lubomír ; Čermák, Jiří
This paper deals with changes of structure in Mg-Ni alloys after absorption and desorption of hydrogen. Experimental materials were prepared by two techniques – by casting and by ball milling and subsequent compacting to pellets. These materials were hydrogen-charged at elevated temperature and pressure. Materials were studied using the SEM Jeol JSM 6460 equipped with EDS/WDS analyzers. Formation of rectangular particles of MgNi2, nucleation of MgH2 at grain boundaries, and changes of Mg2Ni were observed. The so-called activation of hydrogen storage alloy is most likely due to fine particles that appear after the first hydrogen charging.
Detailed record

Interested in being notified about new results for this query?
Subscribe to the RSS feed.
Digital Repository :: Search :: Submit :: Personalize :: Help
Powered by Invenio v1.1.2
Maintained by admin.invenio@techlib.cz
This site is also available in the following languages:
Česky  English