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

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

5 Citations (Scopus)
5 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

Fingerprint

Iron powder
Powders
Mechanics
Adhesion
Silicon Dioxide
Gold
Surface properties
Atomic force microscopy
Plastic deformation
Surface roughness
Silica
Friction
Computer simulation
Experiments

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).
Kappl, M. ; Heim, L. ; Butt, H. J. ; Luding, S. ; Tykhoniuk, R. ; Tomas, J. / From grains to powders : From single particle contact mechanics measurements to bulk powder properties. Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media. 2005. pp. 493-497 (Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media).
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Kappl, M, Heim, L, Butt, HJ, 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. Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media, vol. 1, pp. 493-497, 5th International Conference on Micromechanics of Granular Media, Powders and Grains 2005, Stuttgart, Germany, 18/07/05.

From grains to powders : From single particle contact mechanics measurements to bulk powder properties. / Kappl, M.; Heim, L.; Butt, H. J.; Luding, S.; Tykhoniuk, R.; Tomas, J.

Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media. 2005. p. 493-497 (Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media; Vol. 1).

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

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Kappl M, Heim L, Butt HJ, Luding S, Tykhoniuk R, Tomas J. 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. 2005. p. 493-497. (Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media).