Measurement of Interdiffusion and Tracer Diffusion Coefficients in FCC Co-Cr-Fe-Ni Multi-Principal Element Alloy
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Phase Equilibria and Diffusion"
DOI: 10.1007/s11669-021-00897-7
Abstract: Average effective interdiffusion coefficients of individual components and tracer diffusion coefficient of Ni were experimentally determined in FCC CoCrFeNi high entropy alloys. Average effective interdiffusion coefficients of individual elements in CoCrFeNi alloys were determined using… read more here.
Keywords: alloy; diffusion; entropy; interdiffusion ... See more keywords
Tracer diffusion in the σ phase of the CoCrFeMnNi system
Sign Up to like & getrecommendations! Published in 2021 at "Acta Materialia"
DOI: 10.1016/j.actamat.2020.116498
Abstract: Abstract: A single Cr-rich σ-phase alloy with a composition of Co17Cr46Fe16.3Mn15.2Ni5.5 (at.%) and a tetragonal lattice structure was produced. The tracer diffusion coefficients of Ni and Fe were measured by secondary ion mass spectroscopy using… read more here.
Keywords: phase; phase cocrfemnni; diffusion; diffusion phase ... See more keywords
Tracer diffusion in single crystalline CoCrFeNi and CoCrFeMnNi high-entropy alloys: Kinetic hints towards a low-temperature phase instability of the solid-solution?
Sign Up to like & getrecommendations! Published in 2020 at "Scripta Materialia"
DOI: 10.1016/j.scriptamat.2020.05.060
Abstract: Abstract Tracer-diffusion of constituting elements in single-crystalline CoCrFeNi and CoCrFeMnNi is measured from 923 K to 1373 K. In CoCrFeMnNi, low-temperature deviations from otherwise linear Arrhenius-type dependencies are seen for all elements excluding Mn. The kinks are… read more here.
Keywords: low temperature; temperature; tracer diffusion; single crystalline ... See more keywords
Lithium Tracer Diffusion in Amorphous LixSi for Low Li Concentrations
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Physical Chemistry C"
DOI: 10.1021/acs.jpcc.7b12296
Abstract: Li tracer self-diffusion was studied in amorphous lithium–silicon compounds which are important as negative electrodes in Li-ion batteries. Experiments were done on LixSi/6LixSi (LixSi, x ∼ 0.02 and x ∼ 0.06) thin-film heterostructures using secondary… read more here.
Keywords: diffusion; tracer diffusion; lithium; lithium tracer ... See more keywords
Oxygen surface exchange and tracer diffusion in differently oriented thin films of Gd-doped CeO2.
Sign Up to like & getrecommendations! Published in 2020 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.0c09605
Abstract: The exchange of 18O between gaseous molecular oxygen and thin-film samples of Ce0.99Gd0.01O1.995 with two different, nominal surface orientations [(111) and (110)] was studied. Oxygen isotope exchange experiments were conducted in the temperature range 573… read more here.
Keywords: oxygen; diffusion; surface exchange; tracer diffusion ... See more keywords
Tracer diffusion in active suspensions.
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review E"
DOI: 10.1103/physreve.95.052605
Abstract: We study the diffusion of a Brownian probe particle of size R in a dilute dispersion of active Brownian particles of size a, characteristic swim speed U_{0}, reorientation time τ_{R}, and mechanical energy k_{s}T_{s}=ζ_{a}U_{0}^{2}τ_{R}/6, where… read more here.
Keywords: diffusion active; diffusion; probe; energy ... See more keywords