Phase-field simulations of particle capture during the directional solidification of silicon

Aufgebauer, Henning; Kundin, Julia; Emmerich, Heike; Azizi, Maral; Reimann, C.; Friеdrich, J.; Jauß, Thomas; Sorgenfrei, Tina; Cröll, A.

doi:10.1016/j.jcrysgro.2016.04.032

Cited by 22 publications

(8 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This assumptions were made taking into account that for larger particle sizes, critical velocities for pushing in polypropylene are extremely low and hence, they are not likely to occur for the geometrical configuration studied. This tendency has been reported before for other authors and other materials …”

Section: Introductionsupporting

confidence: 91%

“…The particle was firstly assumed to be spherical, but other particle shapes will be considered in future models. The physics of the problem is governed by a dynamic balance of forces . Assuming a steady‐state condition of pushing and neglecting the gravitational acceleration, the governing forces acting onto the particle were the drag and the repulsion forces.…”

Section: Methods Sectionmentioning

confidence: 99%

“…Rejection of particles ahead of slow growing rate spherulites has been observed by several authors. However, none of these studies was focused on the conditions under which rejection or pushing takes place in semicrystalline polymers. In these materials, melt viscosity, particle size, and hydrodynamic force are also major influencing factors in the particle rejection by the growing spherulites.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A novel numerical model for the interaction between the solidification front of a semicrystalline polymer and spherical particles

Agaliotis

Vázquez

Bernal

2018

Polymer Crystallization

View full text Add to dashboard Cite

The interaction between a solidification front of a semicrystalline polymer and a spherical particle is a topic of main interest because it addresses particle dispersion/distribution and materials behavior associated with this issue. In this paper, this interaction is investigated from numerical analyses by a computational fluid dynamics model that employs the shape of the interface to calculate drag and repulsion forces. The results obtained in turn are used to determine the conditions under which the particle is dragged by the solidification front. This is employed then to predict critical solidification front velocities for pushing as a function of particle size. The results shows that the numerical model developed here is able to accurately predict the conditions for particle pushing in semicrystalline polymers. The required cooling conditions which lead to a redistribution of the particles below 50 µm of radius during solidification in polymer composites and blends can be determined with the proposed model.

show abstract

Section: Introductionsupporting

confidence: 91%

Section: Methods Sectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A novel numerical model for the interaction between the solidification front of a semicrystalline polymer and spherical particles

Agaliotis

Vázquez

Bernal

2018

Polymer Crystallization

View full text Add to dashboard Cite

show abstract

“…Such experimental observations should help us for further developments of modelling approaches of freezing colloids. Phase field, in particular, has been developed for many years in materials science (essentially in metallurgy) [50]. A working phase field model of freezing suspensions would certainly be a major advance.…”

Section: Fundamental Understanding Of the Processmentioning

confidence: 99%

The lure of ice-templating: Recent trends and opportunities for porous materials

Deville

2018

Scripta Materialia

View full text Add to dashboard Cite

Ice-templating is a simple materials processing and shaping route where the growth of crystals from a solvent template the porosity. Although the principles of ice-templating were established a long time ago, it has lured considerable attention over the past 5 years to become a well-established processing route for porous materials of all kinds. In this viewpoint, I summarize the current status and recent trends of ice-templating studies. I then review the unique assets of ice-templating and propose a roadmap of the most promising or pressing questions and opportunities in this domain.

show abstract

“…Such second phases are nucleated when the enriched concentration within the diffusion boundary layer of always presented carbon and nitrogen exceeds the solubility of C and N in Si melt being for both about 5 × 10 18 cm −3 . Recent phasefield simulations of SiC particle capture at directional solidification of silicon and comparison with first experiments show that even the particle morphology can have a larger effect on the critical growth velocity [92].…”

Section: Foreign Particlesmentioning

confidence: 99%

Fundamentals and engineering of defects

Rudolph

2016

Progress in Crystal Growth and Characterization of Materials

View full text Add to dashboard Cite

Phase-field simulations of particle capture during the directional solidification of silicon

Cited by 22 publications

References 41 publications

A novel numerical model for the interaction between the solidification front of a semicrystalline polymer and spherical particles

A novel numerical model for the interaction between the solidification front of a semicrystalline polymer and spherical particles

The lure of ice-templating: Recent trends and opportunities for porous materials

Fundamentals and engineering of defects

Contact Info

Product

Resources

About