Influence of platelet content on the fabrication of colloidal gels for robocasting: Experimental analysis and numerical simulation

Mylena Lorenz, Bastien Dietemann, Larissa Wahl, Claas Bierwisch, Torsten Kraft, Harald Kruggel-Emden, Nahum Travitzky

Research output: Contribution to journalArticle

Abstract

The preparation of colloidal gels containing different amounts of platelet and sphere-like powders is presented for the production of textured structures using robocasting and templated grain growth methods. The influence of platelet amount on paste fabrication and extrusion is investigated experimentally and numerically. Rheology of the pastes showed the need to vary coagulant and total filling fraction to obtain a paste suitable for robocasting. Pastes containing up to 0.15 platelet fractions were successfully extruded through 0.5 mm and 1.5 mm nozzle diameters. Pastes with platelet content higher than 0.18 and different filling fractions could only be extruded through the 1.5 mm nozzle. Discrete Element Method simulation predicts that the extrusion of pastes containing a high amount of platelets through a thinner nozzle was not possible due to powder morphology and size. Thus, the simulation supports the assumption that a high amount of platelets might be unprintable using thinner nozzles.

Original languageEnglish
Pages (from-to)811-825
Number of pages15
JournalJournal of the European Ceramic Society
Volume40
Issue number3
DOIs
Publication statusPublished - Mar 2020

Fingerprint

Ointments
Platelets
Gels
Fabrication
Nozzles
Computer simulation
Powders
Extrusion
Coagulants
Grain growth
Rheology
Finite difference method

Keywords

  • Additive Manufacturing
  • Colloidal gel
  • Discrete element method
  • Numerical simulation
  • Robocasting

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Influence of platelet content on the fabrication of colloidal gels for robocasting : Experimental analysis and numerical simulation. / Lorenz, Mylena; Dietemann, Bastien; Wahl, Larissa; Bierwisch, Claas; Kraft, Torsten; Kruggel-Emden, Harald; Travitzky, Nahum.

In: Journal of the European Ceramic Society, Vol. 40, No. 3, 03.2020, p. 811-825.

Research output: Contribution to journalArticle

Lorenz, Mylena ; Dietemann, Bastien ; Wahl, Larissa ; Bierwisch, Claas ; Kraft, Torsten ; Kruggel-Emden, Harald ; Travitzky, Nahum. / Influence of platelet content on the fabrication of colloidal gels for robocasting : Experimental analysis and numerical simulation. In: Journal of the European Ceramic Society. 2020 ; Vol. 40, No. 3. pp. 811-825.
@article{26686f7011fe4c49ba06d4323e364eef,
title = "Influence of platelet content on the fabrication of colloidal gels for robocasting: Experimental analysis and numerical simulation",
abstract = "The preparation of colloidal gels containing different amounts of platelet and sphere-like powders is presented for the production of textured structures using robocasting and templated grain growth methods. The influence of platelet amount on paste fabrication and extrusion is investigated experimentally and numerically. Rheology of the pastes showed the need to vary coagulant and total filling fraction to obtain a paste suitable for robocasting. Pastes containing up to 0.15 platelet fractions were successfully extruded through 0.5 mm and 1.5 mm nozzle diameters. Pastes with platelet content higher than 0.18 and different filling fractions could only be extruded through the 1.5 mm nozzle. Discrete Element Method simulation predicts that the extrusion of pastes containing a high amount of platelets through a thinner nozzle was not possible due to powder morphology and size. Thus, the simulation supports the assumption that a high amount of platelets might be unprintable using thinner nozzles.",
keywords = "Additive Manufacturing, Colloidal gel, Discrete element method, Numerical simulation, Robocasting",
author = "Mylena Lorenz and Bastien Dietemann and Larissa Wahl and Claas Bierwisch and Torsten Kraft and Harald Kruggel-Emden and Nahum Travitzky",
year = "2020",
month = "3",
doi = "10.1016/j.jeurceramsoc.2019.10.044",
language = "English",
volume = "40",
pages = "811--825",
journal = "Journal of the European Ceramic Society",
issn = "0955-2219",
publisher = "Elsevier BV",
number = "3",

}

TY - JOUR

T1 - Influence of platelet content on the fabrication of colloidal gels for robocasting

T2 - Experimental analysis and numerical simulation

AU - Lorenz, Mylena

AU - Dietemann, Bastien

AU - Wahl, Larissa

AU - Bierwisch, Claas

AU - Kraft, Torsten

AU - Kruggel-Emden, Harald

AU - Travitzky, Nahum

PY - 2020/3

Y1 - 2020/3

N2 - The preparation of colloidal gels containing different amounts of platelet and sphere-like powders is presented for the production of textured structures using robocasting and templated grain growth methods. The influence of platelet amount on paste fabrication and extrusion is investigated experimentally and numerically. Rheology of the pastes showed the need to vary coagulant and total filling fraction to obtain a paste suitable for robocasting. Pastes containing up to 0.15 platelet fractions were successfully extruded through 0.5 mm and 1.5 mm nozzle diameters. Pastes with platelet content higher than 0.18 and different filling fractions could only be extruded through the 1.5 mm nozzle. Discrete Element Method simulation predicts that the extrusion of pastes containing a high amount of platelets through a thinner nozzle was not possible due to powder morphology and size. Thus, the simulation supports the assumption that a high amount of platelets might be unprintable using thinner nozzles.

AB - The preparation of colloidal gels containing different amounts of platelet and sphere-like powders is presented for the production of textured structures using robocasting and templated grain growth methods. The influence of platelet amount on paste fabrication and extrusion is investigated experimentally and numerically. Rheology of the pastes showed the need to vary coagulant and total filling fraction to obtain a paste suitable for robocasting. Pastes containing up to 0.15 platelet fractions were successfully extruded through 0.5 mm and 1.5 mm nozzle diameters. Pastes with platelet content higher than 0.18 and different filling fractions could only be extruded through the 1.5 mm nozzle. Discrete Element Method simulation predicts that the extrusion of pastes containing a high amount of platelets through a thinner nozzle was not possible due to powder morphology and size. Thus, the simulation supports the assumption that a high amount of platelets might be unprintable using thinner nozzles.

KW - Additive Manufacturing

KW - Colloidal gel

KW - Discrete element method

KW - Numerical simulation

KW - Robocasting

UR - http://www.scopus.com/inward/record.url?scp=85075440166&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85075440166&partnerID=8YFLogxK

U2 - 10.1016/j.jeurceramsoc.2019.10.044

DO - 10.1016/j.jeurceramsoc.2019.10.044

M3 - Article

AN - SCOPUS:85075440166

VL - 40

SP - 811

EP - 825

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 3

ER -