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 language | English |
|---|---|
| Title of host publication | Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media |
| Pages | 493-497 |
| Number of pages | 5 |
| Publication status | Published - 1 Dec 2005 |
| Event | 5th International Conference on Micromechanics of Granular Media, Powders and Grains 2005 - Stuttgart, Germany Duration: 18 Jul 2005 → 22 Jul 2005 |
Publication series
| Name | Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media |
|---|---|
| Volume | 1 |
Conference
| Conference | 5th International Conference on Micromechanics of Granular Media, Powders and Grains 2005 |
|---|---|
| Abbreviated title | PG 2005 |
| Country | Germany |
| City | Stuttgart |
| Period | 18/07/05 → 22/07/05 |
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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 proceeding › Conference contribution › Academic › peer-review
TY - GEN
T1 - From grains to powders
T2 - From single particle contact mechanics measurements to bulk powder properties
AU - Kappl, M.
AU - Heim, L.
AU - Butt, H. J.
AU - Luding, S.
AU - Tykhoniuk, R.
AU - Tomas, J.
PY - 2005/12/1
Y1 - 2005/12/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84857515173&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9780415383479
T3 - Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
SP - 493
EP - 497
BT - Powders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
ER -