Abstract
The sintering and dissolution process (SDP) is a novel method for manufacturing Al foams. One concern of the process is the presence of residual NaCl in the as manufactured Al foams under certain circumstances, which may have undesirable effects on the properties of the foams. This paper develops a stochastic model to predict the fraction of entrapped NaCl based on the assumptions that the particles of the Al and NaCl powders used in SDP are spherical and monosized and that they are distributed randomly in the preform. The model predicts that the fraction of entrapped NaCl in the foam decreases with increasing volume fraction of NaCl in the preform and with decreasing NaCl-to-Al particle size ratio. The model predictions are in general agreements with the preliminary experimental measurements. The model provides a basis for the selection of Al and NaCl powders in order to minimise the entrapped NaCl in the foam.
Similar content being viewed by others
References
L.J. Gibson and M.F. Ashby, Cellular Solids: Structure and Properties, 2nd edition (Cambridge University Press, Cambridge, 1997).
M.F. Ashby et al., Metal Foams: A Design Guide (Butterworth Heinemann, Boston, 2000).
J. Banhart and H. Eifert (Eds.), Metal Foams (Verlag MIT Publishing, Bremen, 1997).
J. Banhart, M.F. Ashby, and N.A. Fleck (Eds.), Metal Foams and Porous Metal Structures (Verlag MIT Publishing, Bremen, 1999).
J. Banhart, M.F. Ashby, and N.A. Fleck (Eds.), Metal Foams and Porous Metal Structures (Verlag MIT Publishing, Bremen, 2001).
J. Banhart, Progress in Materials Science 46, 559 (2001).
Y.Y. Zhao and D.X. Sun, Scripta Materialia 44, 105 (2001).
D.X. Sun, T. Fung, and Y.Y. Zhao, in Cellular Metals and Metal Foaming Technology, edited by J. Banhart, M.F. Ashby, and N.A. Fleck (Verlag MIT Publishing, Bremen, Germany, 2001), p. 227.
D.X. Sun and Y.Y. Zhao, Metallurgical and Materials Transactions B 34, 69 (2003).
M.G. Kendall and P.A.P. Moran, Geometrical Probability (Charles Griffin &; Co. Ltd., London, 1963), p. 37.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Zhao, Y. Stochastic Modelling of Removability of NaCl in Sintering and Dissolution Process to Produce Al Foams. Journal of Porous Materials 10, 105–111 (2003). https://doi.org/10.1023/A:1026079612440
Issue Date:
DOI: https://doi.org/10.1023/A:1026079612440