Vol. 1 No. 2 (2020)
Articles

Determination of the Neck Size between Powders during Sintering Process Using Finite Element Methods

Anas Obeed Balod
Department of Mechanical Engineering, University of Mosul
Ziad Al Sarraf
Department of Mechanical Engineering, Faculty of Engineering, University of Mosul, Mosul, IRAQ
Anas Abid Mattie
Duhok Technical Institute, Duhok Polytechnic University

Published 2020-12-10

Keywords

  • Discrete element method,
  • sintering process,
  • grain boundary,
  • surface diffusion

How to Cite

[1]
A. O. . Balod, Z. Al Sarraf, and A. A. Mattie, “Determination of the Neck Size between Powders during Sintering Process Using Finite Element Methods”, JoCEF, vol. 1, no. 2, pp. 29-36, Dec. 2020.

Abstract

Today, sintering considers one of the significant processes that can be used in powder technology to produce a new solid product from powders using thermal energy. Many parameters can be successfully controlled by this process such as temperature, Particle size, process time, structure geometry, powder density, and powder composition. Study and analysis of the behavior of powder during the sintering process was carried out using finite element methods. The simulation provides two styles of discrete method and Qusi-static method. This research contributes to two types of processes in order to simulate the copper powder during the sintering process and to determine the variation by using contact and shrinkage ratios of powder behaviors. Finally, a comparison between the two styles of discrete element method explains how the selected parameters were impacted on the sintering process.

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References

  1. German RM. Sintering theory and practice. Sintering Theory and Practice, by Randall M German, pp 568 ISBN 0-471-05786-X Wiley-VCH, January 1996. 1996;1.
  2. Zhang W, Schneibel J. H. The sintering of two particles by surface and grain boundary diffusion—a two-dimensional numerical study. Journal of material science. 1995; Doi 10.1016/0965-7175(95)00115-c.
  3. Parhami F, McMeeking R, Cocks A, Suo Z. A model for the sintering and coarsening of rows of spherical particles. Mechanics of Materials. 1999;31:43-61.
  4. Coble R. Initial sintering of alumina and hematite. Journal of the American Ceramic Society. 1958;41:55-62.
  5. Martin C, Bouvard D, Shima S. Study of particle rearrangement during powder compaction by the discrete element method. Journal of the Mechanics and Physics of Solids. 2003;51:667-93.
  6. Chen P, Ni J. Discrete element modeling of micro-feature hot compaction process. Transactions of the North American Manufacturing Research Institution/SME.36.
  7. Exner HE. Principles of single-phase sintering. Rev Powder Metall Phys Ceram 1,(1/4), 1979. 1979.
  8. Nosewicz S, Rojek J, Pietrzak K, Chmielewski M. Viscoelastic discrete element model of powder sintering. Powder Technology. 2013;246:157-68.
  9. Yan Z, Martin CL, Guillon O, Bouvard D., Lee C.S., Microstructure evolution during the co-sintering of Ni/BaTiO3multilayerceramic capacitors modeled by discrete element simulations. Journal of the European Ceramic Society 34 (2014) 3167–3179
  10. Coble RL. Sintering crystalline solids. I. Intermediate and final state diffusion models. Journal of applied physics. 1961;32:787-925.
  11. Coblenz W, Dynys J, Cannon R, Coble R. Initial stage solid state sintering models. A critical analysis and assessment. Sintering Processes Materials Science Research. 1980;13:141-57.
  12. Cundall. P.A. A computer model for simulating progressive, large scale movements in blocky rock systems. Proceedings of Symposium of International Society of Rock Mechanics, At Nancy, France,1, 1971.
  13. Chen P, Ni J. Discrete element modeling of micro-feature hot compaction process. Transactions of the North American Manufacturing Research Institution/SME.36.
  14. Parhami F, McMeeking R, Cocks A, Suo Z. A model for the sintering and coarsening of rows of spherical particles. Mechanics of Materials. 1999;31:43-61.
  15. Martin C.L., Schneider L.C.R., Olmos L. and Bouvard D. Discrete element modeling of metallic powder sintering. Scripta Materialia, 55:425–428, 2006.
  16. Wakai F, Brakke K. Mechanics of sintering for coupled grain boundary and surface diffusion. Acta Materialia. 2011;59:5379-87.
  17. Kinery W.D, Bowen H.K, Uhlmann D.R. Introdcution to Ceramics (2nd Ed.) John Wiely and Sons, 1976.