Applications of the Sem,tem,and Fim in the Analysis of Structure and Energy of Metal Interfaces

Murr, L. E.; Inal, O. T.; Wong, G. I.

doi:10.1525/9780520323230-023

Cited by 7 publications

(4 citation statements)

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“…1 b. The mean grain boundary energy for twin boundaries is consistent with the values determined by Murr et al [41] , Murr [42] ranging from 0 . 036 J/m 2 to 0 .…”

Section: Relative Grain Boundary Energysupporting

confidence: 89%

“…043 J/m 2 . The mean grain boundary energy for HAGBs is slightly higher than the values determined by Divinski et al [47] , Prokoshkina et al [48] and Murr et al [41] , Murr [42] due to the fact that the high-angle grain boundaries in literature included incoherent 3 -GBs as well, reducing the mean grain boundary energy.…”

Section: Relative Grain Boundary Energymentioning

confidence: 63%

“…In the work of Williams and Barrand [39] and Stickle et al [44] Ni foils were used exhibiting texture which decreased the relative grain boundary energy. The relative grain boundary energy determined by Murr et al [41] and the one determined by Roth [43] as well as the values for twin boundaries [38,41,44] can be considered reliable. Murr et al distinguished between twin boundaries and high-angle grain boundaries.…”

Section: Relative Grain Boundary Energymentioning

confidence: 89%

“…The zero temperature T = 0 K and the melting temperature T m = 1455 • C of Ni are shown. The references [37,[40][41][42][43][44][45][46][47][48][61][62][63] are part of this figure. ture data of the mean surface energy γ S and mean grain boundary energy γ GB is given in Table 1 including details about the experimental conditions.…”

Section: Introductionmentioning

confidence: 99%

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A Thermal Grooving Study of Relative Grain Boundary Energies of Nickel in Polycrystalline Ni and in a Ni/YSZ Anode Measured by Atomic Force Microscopy

et al. 2020

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Grain boundary grooves of nickel were studied in Ni polycrystals and in Ni/YSZ (nickel/yttria-stabilized zirconia) anode microstructures of an solid oxide fuel cell (SOFC) in order to determine the relative grain boundary energies of nickel. Reliable material parameters are necessary for realistic simulations to model the coarsening of nickel grains in SOFC anodes. However, the reported values in literature do not meet the requirements for accuracy and the experimental conditions differ strongly from the conditions within an anode. In this work, the measurement approach for atomic force microscopy was optimized to ensure the required accuracy in measuring grain boundary grooves; the thermal grooving experiments were performed at T = 750 • C in dry and humid atmosphere. The resulting distributions of measured dihedral angles and relative grain boundary energies are identical in the polycrystal and the anode microstructure and are independent of annealing time and humidity. For the first time, precise values of the relative grain boundary energies of nickel are determined with high accuracy under operating conditions of an SOFC anode. The mean value of the relative grain boundary energies γ GB /γ S of nickel is 0 . 475 ± 0 . 013 for high-angle grain boundaries, 0 . 217 ± 0 . 010 for low-angle grain boundaries, 0 . 157 ± 0 . 013 for 3 grain boundaries and 0 . 019 ± 0 . 002 for twin boundaries.

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“…1 b. The mean grain boundary energy for twin boundaries is consistent with the values determined by Murr et al [41] , Murr [42] ranging from 0 . 036 J/m 2 to 0 .…”

Section: Relative Grain Boundary Energysupporting

confidence: 89%