Self-diffusion in liquid interfaces.
For studying self-diffusion in liquid interfaces, 59Fe tracer diffusion was measured on ultrafine-grained Nd2Fe14B which undergoes an intergranular melting transition for low Nd excess. The diffusion coefficient in the intergranular liquid layers is found to be lower than in bulk melts indicating a hampered atomic mobility due to confinement. Well above the intergranular melting transition, the diffusivity in the liquid interfaces approaches a value characteristic for bulk melts.
Herth
Simone
S
Institut für Nanotechnologie, Forschungszentrum Karlsruhe GmbH, D-76021 Karlsruhe, Germany.
Ye
Feng
F
Eggersmann
Martin
M
Gutfleisch
Oliver
O
Würschum
Roland
R