Interplay between Surface and Grain Boundary in Sintering


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Three-dimensional numerical simulation of sintering was performed to illustrate the interplay between surface and grain boundary in particle scale. The shrinkage during sintering can be described as a motion of the center of mass by the force acting between particles, that is, the sintering force. When a particle interacts with several neighbor particles, the sintering force on the particle is a vector sum of forces acting through grain boundaries with neighbors. A particle changes its own shape through interaction with neighbor particles, then, the coordination number affects particle motion.



Materials Science Forum (Volumes 558-559)

Edited by:

S.-J.L. Kang, M.Y. Huh, N.M. Hwang, H. Homma, K. Ushioda and Y. Ikuhara




F. Wakai, "Interplay between Surface and Grain Boundary in Sintering", Materials Science Forum, Vols. 558-559, pp. 1029-1034, 2007

Online since:

October 2007





[1] F. B. Swinkels and M. F. Ashby: Acta Metall. Vol. 29 (1981), p.259.

[2] A. Jagota and P. R. Dawson: Acta Metall. Vol. 36 (1988), p.2551.

[3] F. Wakai and F. Aldinger: Acta Mater. Vol. 51 (2003), p.4013.

[4] F. Wakai, T. Akatsu and Y. Shinoda: Acta Mater. Vol. 54 (2006), p.793.

[5] K. Brakke: Exp. Math. Vol. 1 (1992), p.141.

[6] F. Wakai, N. Enomoto and H. Ogawa: Acta Mater. Vol. 48 (2000), p.1297.

[7] F. Wakai and F. Aldinger: Acta Mater. Vol. 51 (2003), p.641.

[8] F. Wakai, Y. Shinoda and T. Akatsu: Acta Mater. Vol. 52 (2004), p.5621.

[9] F. Wakai, M. Yoshida, Y. Shinoda and T. Akatsu: Acta Mater. Vol. 53 (2005), p.1361.

[10] F. Wakai: J. Am. Ceram. Soc. Vol. 89 (2006), p.1471.

[11] W. Beere: Acta Metall. Vol. 23 (1975), p.139. Fig. 6 Relationship between the strain rate and the sintering force in sintering of particle clusters. The slope of the curve is different before (dotted line) and after solid line) the peak force.