Computer simulation of free settling and skeletal settling during liquid phase sintering

Computer Study of Skeletal Settling Combined with Extrication of Solid Phase Domains during Liquid Phase Sintering of Tungsten Heavy Alloy

In this paper, we investigated numerically gravity induced skeletal settling during liquid phase sintering. The microstructural evolution will be simulated by simultaneous computation of displacement of the center of mass and mass transport due to dissolution and precipitation at the interfaces between solid-phase and liquid matrix. Common to this study based on domain methodology for definitio...

Finite element simulation of pyroplastic deformation, anisotropic shrinkage and heterogeneous densification for ceramic materials during liquid phase sintering process

Pyroplastic deformation is a distortion of the ceramic shape during the sintering process. It occurs because the flow of the vitreous phase at high temperature and the applied stress due to the weight of the product during sintering process. The aim of this paper deals with describing a numerical-experimental method to evaluate the pyroplastic deformation, to predict the anisotropic shrinkage a...

Solid Solution Formation during Liquid Phase Sintering

Basic and Mixed Models for Computer Simulation of Liquid Phase Sintering of a Porous Structure

A two-dimensional method based on basic and mixed models for simulation of liquid phase sintering of a porous structure will be developed. These models will be tested in order to conduct a study of diffusion phenomena and gravitational effects on microstructural evolution during liquid phase sintering of a W-Ni system.

Gravitational Settling of 22ne in Liquid White Dwarf Interiors

The nuclear reactions that occur in the stellar progenitors of white dwarfs (WDs) lead to an internal composition of 12C, 16O, and a “contaminant” nucleus, 22Ne . The 22Ne is produced by helium captures on 14N left from hydrogen burning via the CNO cycle. By virtue of its two excess neutrons (relative to the predominant A = 2Z nuclei), a downward force of ≈ 2mpg is exerted on 22Ne in the WD int...