期刊
ADVANCES IN COLLOID AND INTERFACE SCIENCE
卷 96, 期 1-3, 页码 213-230出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0001-8686(01)00082-3
关键词
adhesion; surface force; capillary; nanoscale; roughness; atomic force microscope; relative humidity
The flow and adhesion behavior of fine powders (approx. less than 10 mum) is significantly affected by the magnitude of attractive interparticle forces. Hence, the relative humidity and magnitude of capillary forces are critical parameters in the processing of these materials. In this investigation, approximate theoretical formulae are developed to predict the magnitude and onset of capillary adhesion between a smooth adhering particle and a surface with roughness on the nanometer scale. Experimental adhesion values between a variety of surfaces are measured via atomic force microscopy and are found to validate theoretical predictions. (C) 2002 Elsevier Science B.V. All rights reserved.
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