MOLECULAR DYNAMIC-MODEL OF THE MAGNETIC-PROPERTIES AND MICROSTRUCTUREOF ADVANCED METAL-PARTICLE DISPERSIONS

A molecular dynamic model of the properties of a strongly interacting particulate dispersion is described. The model is applied to the study of the properties of a dispersion of advanced metal particles from th e intrinsic magnetic behavior through the effects of shear and orienta tion during the coating process to a final description of the microstr ucture of the coated medium. The predicted magnetic properties of the dispersion, calculated from the physical properties of the particles a nd medium, give excellent agreement with experiment. Initial predictio ns of the effects of shear show the model to be a useful basis for the interpretation of shear magnetometry. Following the ''model'' coating process the model gives realistic predictions of the microstructure o f coated media. (C) 1997 American Institute of Physics.