From grains to powders: From single particle contact mechanics measurements to bulk powder properties

M. Kappl*, L. Heim, H. J. Butt, S. Luding, R. Tykhoniuk, J. Tomas

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    5 Citations (Scopus)
    14 Downloads (Pure)

    Abstract

    Methods based on atomic force microscopy have been used to measure adhesion and sliding and rolling friction for single micron-sized particles. Model systems with low surface roughness (silica and gold particles) as well as technical products (carbonyl iron powder (CIP) particles) with less defined surface properties were used. For the model substances no significant dependence of adhesion on load was observed. For the CIP particles, plastic deformation was observed at higher loads. Comparison of the microscopic material parameters obtained for the CIP particles showed good agreement with the corresponding values obtained from Jenike shear cell experiments; this is especially true for the maximal attractive (cohesive) force. Computer simulations indicate that the macroscopic cohesion is primarily correlated to this (microscopic) maximal attractive force.

    Original languageEnglish
    Title of host publicationPowders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
    Pages493-497
    Number of pages5
    Publication statusPublished - 1 Dec 2005
    Event5th International Conference on Micromechanics of Granular Media, Powders and Grains 2005 - Stuttgart, Germany
    Duration: 18 Jul 200522 Jul 2005

    Publication series

    NamePowders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
    Volume1

    Conference

    Conference5th International Conference on Micromechanics of Granular Media, Powders and Grains 2005
    Abbreviated titlePG 2005
    CountryGermany
    CityStuttgart
    Period18/07/0522/07/05

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  • Cite this

    Kappl, M., Heim, L., Butt, H. J., Luding, S., Tykhoniuk, R., & Tomas, J. (2005). From grains to powders: From single particle contact mechanics measurements to bulk powder properties. In Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media (pp. 493-497). (Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media; Vol. 1).