Gravitational limit of particle volume fraction in liquid-phase sintering

Yang, S.-N.; German, Randall M.

doi:10.1007/bf02670302

Cited by 30 publications

(2 citation statements)

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“…For the connectivity relation (Equation (16)), the choice of the value of the K parameter is critical. It depends on the grain size distribution and solid volume fraction and the estimation of Yang and German [59] of K = 0.68 may not apply to the microstructures considered in our simulations. Liu et al [60] showed that the value of K may be smaller for a system with distributed particle sizes and for lower solid volume fractions.…”

Section: Particle-particle Contacts and Mean Apparent Dihedral Anglementioning

confidence: 92%

“…The 3-D coordination number can be obtained as the average number of particleparticle contacts of the particles measured from the 3-D microstructure. It was determined by Yang and German that for liquid phase sintering, the value of K is 0.68 [59]. Equation 16can thus be used to estimate the mean 3-D apparent dihedral angle in the simulations based on the measured connectivities and 3-D coordination numbers.…”

Section: Particle-particle Contacts and Mean Apparent Dihedral Anglementioning

confidence: 99%

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Three-dimensional phase-field study of grain coarsening and grain shape accommodation in the final stage of liquid-phase sintering

Ravash

Vanherpe²,

Zhang

et al. 2017

Journal of the European Ceramic Society

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A 3-dimensional phase-field model is implemented to simulate the grain evolution in the final stage of liquid-phase sintering. The model considers a liquid phase and a polycrystalline solid phase. Results for varying ratios of the solid-solid interface energy to solid-liquid interface energy and varying solid volume fractions are presented. A variety of microstructures, from fully connected grain structures with liquid pockets at the grain junctions to individual grains fully wetted by the liquid matrix, is seen. The 3 main mechanisms for particle shape accommodation, namely, contact flattening, Ostwald ripening and particle bonding, are reproduced in the simulations. The solid volume fraction, particle size distribution, contiguity, connectivity, particle-particle contact areas and the number of particle contacts per particle are measured as a function of time. The exponent in the power growth law varies between 2.4, for the fully connected grain structures, and 3, for the completely wetted grains.

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Section: Particle-particle Contacts and Mean Apparent Dihedral Anglementioning

confidence: 92%

Section: Particle-particle Contacts and Mean Apparent Dihedral Anglementioning

confidence: 99%