APPENDICES (Appendix A GRADED STRUCTURES BY SEDIMENTATION AND FLOTATION)
- Pp. 28-40 (13)Jerzy J. Sobczak and Ludmil B. Drenchev
Sedimentation and flotation seem to be simple physical processes and it should be easy to make use of them. To do this in a real situation one must be very familiar with the processes. Employment of mathematical modeling and numerical simulations is extremely helpful here. A great number of pages have been devoted to this matter [102-108]. Some basic features of these phenomena, which are closely related to the manufacture of graded structures in particle reinforced MMCs, will be given below. </p> <p> Sedimentation and flotation in the process of MMCs preparation exist because of gravity, and arise as a result of the density difference between particles and the metal matrix melt. Special experiments with a water-SiC suspension will be described on the next few pages in order to give a better understanding of particle sedimentation in MMCs synthesis. A variety of formula to estimate the viscosity of slurries will be presented. Finally, utilization of the phenomena will be discussed.