Experimental and numerical analysis of the initial stage of field-assisted sintering of metalsстатьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 16 января 2019 г.
Аннотация:The initial stage of contact formation during field-activated/assisted sintering of
powders is investigated experimentally and numerically for spherical particles
of nickel, steel, and copper. The results of experimental studies of the contact
resistance and the neck formation process due to melting/sintering in two- to
three-particle systems under a single high-current pulse from a capacitor discharge
are compared with results of fully coupled thermo-electrical finite-element
simulations. The impact of particle size, contact geometry, and electrical
load on the temperature and temperature gradient distribution during the pulse
discharge is analyzed numerically for nickel spheres. The influence of the
material itself is compared for nickel, steel, and copper systems.