Sintering—Pressure- and Temperature-Dependent Contact Models

T. Weinhart, R. Fuchs, T. Staedler, M. Kappl, S. Luding

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

Abstract

Sintering granular materials involves the application of pressure and temperature to make the particulate material a permanent solid. In order to better understand this complex process, the pressure-, temperature-, and time-dependent contact behaviour of micron-sized particles has been studied in close collaboration by the groups of Luding, Staedler and Kappl within the DFG SPP PiKo. This chapter summarises the modelling advances made during the project, with direct links given to the experimental results. Two aspects have been studied: (a) the dependence of the elastic as well as frictional contact forces and torques on an applied normal pressure; and (b) the formation and evolution of adhesive bonds between particles during heat-sintering. Both contact models have been experimentally calibrated and validated, using advanced techniques such as nanoindentation and AFM. As materials, borosilicate particles were used to study the pressure-dependency, while polystyrene particles were chosen due to their low glass transition temperature to study the temperature-dependency near the transition. Combining both aspects provides a multi-purpose contact model that allows the simulations of a wide range of sinter and agglomeration processes for a variety of practically relevant materials.
Original languageEnglish
Title of host publicationParticles in Contact
Subtitle of host publicationMicro Mechanics, Micro Process Dynamics and Particle Collective
EditorsSergiy Antonyuk
Place of PublicationCham
PublisherSpringer International Publishing AG
Pages311-338
Number of pages28
ISBN (Electronic)978-3-030-15899-6
ISBN (Print)978-3-030-15898-9
DOIs
Publication statusE-pub ahead of print/First online - 1 Aug 2019

Fingerprint

sintering
temperature
granular materials
agglomeration
nanoindentation
adhesives
glass transition temperature
particulates
torque
polystyrene
atomic force microscopy
heat
simulation

Cite this

Weinhart, T., Fuchs, R., Staedler, T., Kappl, M., & Luding, S. (2019). Sintering—Pressure- and Temperature-Dependent Contact Models. In S. Antonyuk (Ed.), Particles in Contact: Micro Mechanics, Micro Process Dynamics and Particle Collective (pp. 311-338). Cham: Springer International Publishing AG. https://doi.org/10.1007/978-3-030-15899-6_10
Weinhart, T. ; Fuchs, R. ; Staedler, T. ; Kappl, M. ; Luding, S. / Sintering—Pressure- and Temperature-Dependent Contact Models. Particles in Contact: Micro Mechanics, Micro Process Dynamics and Particle Collective. editor / Sergiy Antonyuk. Cham : Springer International Publishing AG, 2019. pp. 311-338
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Weinhart, T, Fuchs, R, Staedler, T, Kappl, M & Luding, S 2019, Sintering—Pressure- and Temperature-Dependent Contact Models. in S Antonyuk (ed.), Particles in Contact: Micro Mechanics, Micro Process Dynamics and Particle Collective. Springer International Publishing AG, Cham, pp. 311-338. https://doi.org/10.1007/978-3-030-15899-6_10

Sintering—Pressure- and Temperature-Dependent Contact Models. / Weinhart, T.; Fuchs, R.; Staedler, T.; Kappl, M.; Luding, S.

Particles in Contact: Micro Mechanics, Micro Process Dynamics and Particle Collective. ed. / Sergiy Antonyuk. Cham : Springer International Publishing AG, 2019. p. 311-338.

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

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AB - Sintering granular materials involves the application of pressure and temperature to make the particulate material a permanent solid. In order to better understand this complex process, the pressure-, temperature-, and time-dependent contact behaviour of micron-sized particles has been studied in close collaboration by the groups of Luding, Staedler and Kappl within the DFG SPP PiKo. This chapter summarises the modelling advances made during the project, with direct links given to the experimental results. Two aspects have been studied: (a) the dependence of the elastic as well as frictional contact forces and torques on an applied normal pressure; and (b) the formation and evolution of adhesive bonds between particles during heat-sintering. Both contact models have been experimentally calibrated and validated, using advanced techniques such as nanoindentation and AFM. As materials, borosilicate particles were used to study the pressure-dependency, while polystyrene particles were chosen due to their low glass transition temperature to study the temperature-dependency near the transition. Combining both aspects provides a multi-purpose contact model that allows the simulations of a wide range of sinter and agglomeration processes for a variety of practically relevant materials.

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Weinhart T, Fuchs R, Staedler T, Kappl M, Luding S. Sintering—Pressure- and Temperature-Dependent Contact Models. In Antonyuk S, editor, Particles in Contact: Micro Mechanics, Micro Process Dynamics and Particle Collective. Cham: Springer International Publishing AG. 2019. p. 311-338 https://doi.org/10.1007/978-3-030-15899-6_10