Distribution of particles in sizes and sintering: A numerical analysis
- 49 Downloads
On the basis of a physical model of sintering, a numerical analysis of the temporal form change in the simulative powder compacts from particles with various distribution widths is carried out. It is shown that, provided the average particle size and initial density of packing are the same, the average grains size in the sintered material and the grains size distribution width both increase with growth of particle-distribution width. The best results from the point of view of productivity of the process (time of sintering) and the qualities of the final product (the average size of the grain) are demonstrated by monodisperse powders. The pro-posed numerical technique may be useful for a qualitative analysis of sintering of the powder compacts, for the reason to optimize the technological parameters and the quality of the material.
KeywordsFree Boundary Distribution Width Sinter Time Sintered Material Contact Boundary
Unable to display preview. Download preview PDF.
- 1.G. Deresevich, “Mechanics of a Granular Media,” in Problems of Mechanics (Inostr. Liter., Moscow, 1961) [in Russian].Google Scholar
- 7.C. A. Brebbia, The Boundary Element Method for Engineers (Wiley, New York, 1978; Mir, Moscow, 1982).Google Scholar
- 9.Ya. E. Geguzin, Physics of Sintering (Nauka, Moscow, 1984) [in Russian].Google Scholar
- 10.S. S. Gorelik, S. V. Dobatkin, and L. Kaputkina, Recrystallization of Metals and Alloys (MISIS, Moscow, 2005) [in Russian].Google Scholar
- 11.J. Hirth and J. Lotte, Theory of Dislocations (McGraw-Hill, New York, 1967; Atomizdat, Moscow, 1972).Google Scholar
- 12.J. M. Dynys, R. L. Coble, and W. S. Coblenz, “Mechanisms of Atom Transport during Initial Stage Sintering of Al2O3,” Mat. Sci. Res. 13, 391 (1979).Google Scholar