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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 3956-3962 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: α-Fe powder has been ball milled at room temperature in an anhydrous ammonia atmosphere for various times. The composition and structure of milled powders was investigated using x-ray diffraction spectroscopy, Mössbauer spectroscopy, combustion elemental analysis, and thermal analysis. A high temperature reaction sequence was observed during milling in the nitrogen composition range from 3.75 to 5.56 wt %. The nitriding reaction sequence has been established as a function of milling time. An increase of nitrogen in the powder with an increase of milling time produces a progression to iron nitride phases richer in nitrogen. A distinct similarity is found between nitriding reaction processes during high-energy ball milling and nitrogen ion implantation into iron. Additionally, an inverse (dissociation) reaction sequence is observed during thermal treatments of ball-milled iron powders. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 37 (1986), S. 159-163 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 32 (1997), S. 1461-1467 
    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 Tungsten carbide has been synthesized directly by ball-milling tungsten powder and activated carbon in vacuum. The structural development of the WC phase with milling times up to 310 h has been followed using X-ray, neutron diffraction and scanning electron microscopy. Subsequent annealing (at 1000 °C for 1 and 20 h) of material milled for 90 h or longer, results in samples comprising almost entirely crystalline WC. The production of WC itself during milling results in enhanced iron contamination from the steel mill and balls on extended milling which were monitored by energy-dispersive X-ray and Mossbauer spectroscopies.
    Type of Medium: Electronic Resource
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