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| AN EXPRESSION FOR NUCLEATION RATE OF CRYSTALLIZATION UNDER PRESSURE |
| QI Pixiang (Nei Monggol Institute of Metallic Materials; Baotou) (Manuscript received 8 November; 1982; revised manuscript 31 March; 1984) |
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Cite this article:
QI Pixiang (Nei Monggol Institute of Metallic Materials; Baotou) (Manuscript received 8 November; 1982; revised manuscript 31 March; 1984). AN EXPRESSION FOR NUCLEATION RATE OF CRYSTALLIZATION UNDER PRESSURE. Acta Metall Sin, 1984, 20(6): 465-470.
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Abstract An attempt was made of deriving an expression for the effects of pressure and temperature on the nucleation rate under the homogeneous crystalline condition, and thereafter numbers of the Betol's crystal nuclei were calculated. The resuits were shown that a peak value may be noticed on the plot of the nucleation rate vs temperature under the condition of constant pressure, and it may shift to the direction of elevated temperature with the increasing of pressure. For substances crystallized with volume shrinkage, a similar peak value may also be presented on the nucleation rate vs pressure plot under constant temperature, and it may shift to the higher pressure with temperature increased.
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Received: 18 June 1984
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2 西田義则;松原弘美;白柳格;鈴木鎮夫,日本金属学会会報,19(1980) ,895．
3 Davies, G. J., Solidification and Casting, Applied Science Publ. London, 1973, p.18．
4 Yoshinori Nishida; Hiromi Matsubara, Z. Metallk., 71 (1980) , №3, 193．
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7 Robert, C. W., CRC Handbook of Chemistry and Physics, CRC Press, Cleveland Ohio, 1977-1978, 58th ed. p. C-192．
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