The macroscopic model of the densification kinetics in the nonisothermic sintering of powders
Source abstract
Abstract
The densification kinetics of a powder system has been described by a relatively simple analytical expression, which consists of only two dimensionless parameters. The first of them has been shown to be equal to the ratio between the maximum rate of the linear contraction and the total contraction of the sample multiplied by the time, for which the densification takes place; the second has been found to be equal to the ratio of the time required for the attainment of the maximum contraction velocity to the total densification time. The densification rate vs. time diagram is given by a curve having one or two maxima depending on values of the parameters entering the model. The study has been aimed at modeling the densification in sintering hard alloy mixtures.
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Research context
OpenAlex topics: Powder Metallurgy Techniques and Materials · Injection Molding Process and Properties · Advanced materials and composites
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References (4)
Show source-provided references
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3. Ogawa, H. and Kataoka, Y., Observation of Sintering of Several Cemented Carbides by a New High-Temperature Dilatometer, High Temp.-High Press., 1981, vol. 13, no. 5, pp. 481–494.
4. Pereira da Silva, A.G., Schubert, W.D., and Lux, B., Mechanisms of Hardmetal Solid and Liquid Phase Sintering, Proc. of 1988 PM World Congress on Hard Materials, 1988, pp. 99–104.