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  • Springer  (5)
  • International Union of Crystallography (IUCr)
  • 1985-1989  (5)
  • 1987  (5)
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  • 1985-1989  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Electrowinning of cobalt from a sulphate bath containing H3BO3 and NaF (1987)
    Springer
    Journal of applied electrochemistry 17 (1987), S. 675-683 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Electrowinning of cobalt from a sulphate bath containing Na2SO4, NaF and H3BO3 individually and H3BO3 in combination with NaF and Na2SO4 was studied. From the preliminary study it was observed that a sulphate bath containing both NaF and H3BO3 gave the best results. The effects of various parameters, namely NaF, H3BO3 and cobalt concentrations, current density, bath temperature, bath pH, etc. on cathode current efficiency and on the nature of the deposit were studied. The results indicate that both H3BO3 and NaF in the sulphate bath contribute towards higher current efficiency and better deposit in the elecrowinning of cobalt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01007801
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Characterization of rapidly solidified aluminium-silicon alloy (1987)
    Springer
    Journal of materials science 22 (1987), S. 3173-3177 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A metallographic investigation of as-cast LM-13 aluminium-silicon alloy, solidified at different cooling rates (using permanent moulds or a single-roll melt spinner), is presented with special reference to the modification of eutectic silicon. and the refinement of primary aluminium. The refinement of microstructure with the increase in cooling rate is mainly attributed to the limited growth kinetics of the nucleated phase during solidification. The rapidly solidified ribbon was heat-treated in order to determine the microstructural stability at high temperature. The tensile strength, percentage elongation and hardness values of as-solidified and heat-treated samples correlate well with the changes in the microstructure observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01161179
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  • 3
    Electronic Resource
    Electronic Resource
    Temperature dependence of EFG at the Fe-site in Co(en)3Fe(CN)6 (1987)
    Springer
    Hyperfine interactions 35 (1987), S. 935-938 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper presents the results of57Fe Mössbauer Investigation of Co(en)3Fe(CN)6, a cation-anion complex where ‘en’ stands for ethylenediamine, for varlous temperatures from 300-88K. In this compound Iron exists in two oxidation states viz., Fe(III) and the abnormal Fe(IV) state. Quadrupole splitting as a function of temperature has been utilised to understand the crystal field splitting at the Fe-site.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02394527
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  • 4
    Electronic Resource
    Electronic Resource
    Fragment angular momenta in low and medium energy fission of242Pu (1987)
    Springer
    The European physical journal 327 (1987), S. 225-229 
    Details
    ISSN: 1434-601X
    Keywords: 25.85.Ge ; 25.85.Ec
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Independent isomeric yield ratios of128Sb were determined radiochemically in the thermal neutron induced fission of241Pu and 34 MeV alpha particle induced fission of238U, both involving the same compound nucleus (242Pu). Fragment angular momenta estimated from the measured isomer ratios using the statistical model analysis showed significantly larger fragment angular momenta in the medium energy fissioning system compared to the low energy fissioning system. This has been attributed to the effect of higher excitation energy and angular momentum in the entrance channel leading to increased fragment temperature, moments of inertia and angular velocity. An attempt was made to calculate the fragment angular momentum in the medium energy fission using the Fermi gas model for the fissioning nucleus, taking into account the multichance fission, saddle shapes of the fissioning nuclei and the angular velocity components of the fissioning nuclei both along and orthogonal to the fission axis. The calculated angular momenta agree well with the experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01292412
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  • 5
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    Unknown
    Characterization of rapidly solidified aluminium-silicon alloy (1987)
    Springer
    Details
    Publication Date: 1987-09-01
    Print ISSN: 0022-2461
    Electronic ISSN: 1573-4803
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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