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Analysis of Adsorbates and Interfacial Forces at Metal Oxide Interfaces at Defined Environmental Conditions Read chapter Read first chapter

2019 | OriginalPaper | Chapter

Sintering—Pressure- and Temperature-Dependent Contact Models

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

Published in: Particles in Contact

Publisher: Springer International Publishing

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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.

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previous chapter Capillary Interaction in Wet Granular Assemblies: Part 2
next chapter A Contact Model for the Discrete Element Simulations of Aggregated Nanoparticle Films
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Metadata
Title
Sintering—Pressure- and Temperature-Dependent Contact Models
Authors
T. Weinhart
R. Fuchs
T. Staedler
M. Kappl
S. Luding
Copyright Year
2019
Book
Particles in Contact

Print ISBN: 978-3-030-15898-9

Electronic ISBN: 978-3-030-15899-6

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-030-15899-6_10

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