Search Results - "Wakai, F"

Sintering and Nanostability: The Thermodynamic Perspective by Castro, Ricardo H. R., Gouvêa, Douglas

“…Sintering and nanostability (defined as the stability against sintering) are critical phenomena present in the processing and application of nanoparticles…”
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Mechanics of sintering for coupled grain boundary and surface diffusion by Wakai, F., Brakke, K.A.

“…Sintering by coupled grain boundary and surface diffusion was analyzed in terms of mechanics. The shrinkage is a result of the relative motion of particles…”
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Evaluation of sintering stress from 3-D visualization of microstructure: Case study of glass films sintered by viscous flow and imaged by X-ray microtomography by Wakai, F., Guillon, O.

“…The sintering stress is a driving force for morphological evolution of pores in sintering, and can be determined from knowledge of the microstructure. The…”
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Mechanics of viscous sintering on the micro- and macro-scale by Wakai, F.

“…The macroscopic quantities in a continuum model of viscous sintering are determined from analysis of the dynamic evolution of pore structures on the…”
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Computation of Effective Steady-State Creep of Porous Ni-YSZ Composites with Reconstructed Microstructures by Kwok, Kawai, Jørgensen, Peter Stanley, Frandsen, Henrik Lund

“…This paper investigates the effective steady‐state creep response of porous Ni–YSZ composites used in solid oxide fuel cell applications by numerical…”
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Anisotropic viscosities and shrinkage rates in sintering of particles arranged in a simple orthorhombic structure by Wakai, F., Akatsu, T.

“…Macroscopic shrinkage in sintering is described as a linear function of the sintering stress tensor and the viscosity tensor, which is determined by taking…”
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Tensor virial equation of evolving surfaces in sintering of aggregates of particles by diffusion by Wakai, F., Brakke, K.A.

“…The moment of inertia tensor is a quantity that characterizes the morphology of aggregates of particles. The deviatoric components indicate the anisotropy of…”
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Tensor-Virial Equation for Deformation of a Particle in Viscous Sintering by Wakai, F., Shinoda, Y., Akatsu, T.

“…A nonspherical glass particle relaxes to its equilibrium shape by viscous flow driven by capillarity at elevated temperatures. The virial method is applied to…”
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Coarsening and grain growth in sintering of two particles of different sizes by Wakai, F., Yoshida, M., Shinoda, Y., Akatsu, T.

“…Coarsening during sintering results from surface motion, while grain growth results from grain boundary motion. The sintering of two spherical particles of…”
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Thermal barrier coating made of porous zirconium oxide on a nickel-based single crystal superalloy formed by plasma electrolytic oxidation by Akatsu, T., Kato, T., Shinoda, Y., Wakai, F.

“…A thermal barrier coating (TBC) made of porous ZrO2 ceramic was formed on a nickel-based single crystal superalloy (NSA) by plasma electrolytic oxidation…”
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Methods to calculate sintering stress of porous materials in equilibrium by Wakai, F., Shinoda, Y., Akatsu, T.

“…The sintering stress is originally defined for equilibrium states, where the mechanical stress just balances the internal surface tension forces so that the…”
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Sintering through surface motion by the difference in mean curvature by Wakai, F., Aldinger, F.

“…The diffusion of atoms changes the morphology of particles in sintering. When the attachment kinetics of adatoms is slower than the diffusion of atoms, the…”
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Direct observation of sintering mechanics of a single grain boundary by Wakai, F., Fukutome, H., Kobayashi, N., Misaki, T., Shinoda, Y., Akatsu, T., Sone, M., Higo, Y.

“…A method to analyze the mechanics of sintering of a single grain boundary was developed by using specimens fabricated by focused ion beam micro-machining. The…”
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Cation diffusion in yttria-zirconia by molecular dynamics by González-Romero, R.L., Meléndez, J.J., Gómez-García, D., Cumbrera, F.L., Domínguez-Rodríguez, A., Wakai, F.

“…This paper presents a novel methodology to calculate cation diffusion coefficients and activation energies in cubic Y 2O 3–ZrO 2 by Molecular Dynamics. The…”
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Shrinkage and disappearance of a closed pore in the sintering of particle cluster by Wakai, F., Akatsu, T., Shinoda, Y.

“…The shrinkage of a closed pore in the sintering of a particle cluster was analyzed. The shrinkage rate was proportional to the sintering stress, and inversely…”
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Equilibrium configuration of particles in sintering under constraint by Wakai, F., Aldinger, F.

“…The equilibrium configuration of identical particles evolved during sintering was determined by minimizing the sum of surface energy and grain boundary energy…”
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Effect of chemical composition of intergranular glass on superplastic compressive deformation of β-silicon nitride by Narimatsu, E., Shinoda, Y., Akatsu, T., Wakai, F.

“…The effect of chemical composition of Y 2O 3–Al 2O 3–SiO 2-based intergranular glass on superplastic deformation of β-Si 3N 4 was studied by compression tests…”
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Multifunctional porous titanium oxide coating with apatite forming ability and photocatalytic activity on a titanium substrate formed by plasma electrolytic oxidation by Akatsu, T., Yamada, Y., Hoshikawa, Y., Onoki, T., Shinoda, Y., Wakai, F.

“…Plasma electrolytic oxidation (PEO) was used to make a multifunctional porous titanium oxide (TiO2) coating on a titanium substrate. The key finding of this…”
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Topological transformation of grains in three-dimensional normal grain growth by Wakai, F., Shinoda, Y., Ishihara, S., Domínguez-Rodríguez, A.

“…The topological transformation of grains in three-dimensional normal grain growth was analyzed by Brakke's Surface Evolver method that simulated the boundary…”
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Topological transformation of grains in superplasticity-like deformation by Wakai, F., Shinoda, Y., Ishihara, S., Domı́nguez-Rodrı́guez, A.

“…The maintenance of the equiaxed shape of grains after a large deformation is a common feature of superplasticity in polycrystalline solids. This feature is…”
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