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Spinodal decomposition and nucleation process are realized by using three transparent solutions: SCN-30 wt%H2O, SCN-50 wt%H2O, and SCN-80 wt%H2O, and the migration characteristics of minor phase droplets (MPDs) was investigated when uni-direction temperature field is applied. It is find that spinodal decomposition takes place in SCN-50 wt%H2O system and nucleation processes occur in SCN-30 wt%H2O and SCN-50 wt%H2O systems. The period during which the minor droplets of the same size in spinodal decomposition are formed is 1/3—1/2 of that in nucleation process. Moreover, the temperature interval in the system with critical composition is larger than those in other systems, therefore, the minor phase droplet formed in spinodal decomposition is longer than that in nucleation process. Under uni-direction temperature field conditions, the migration velocity of MPDs in SCN-80 wt%H2O system is measured experimentally. It is revealed that the experimental results agree well with the calculated Marangoni velocity, indicating that the Marangoni migration plays a key role in the motion of MPDs.
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Keywords:
- phase separation /
- spinodal decomposition /
- nucleation /
- Marangoni migration
[1] Cahn J W, Hilliard J E 1959 J. Chem. Phys. 31 539
[2] Cahn J W, Hilliard J E 1959 J. Chem. Phys. 31 688
[3] Siggia E D 1979 Phys. Rev. A 20 595
[4] Aarts D G A L, Schmidt M, Lekkerkerker H N W 2004 Science 304 847
[5] Gunton J D, Miguel M S, Sahni P S 1983 Phase Transitions and Critical Phenomena (Domb C, Lebowitz J L ed.) (London: Academic Press) p269
[6] Bhat S, Tuinier R, Schurtenberger P 2006 J. Phys. Condens. Matter 18 L339
[7] Bates F S, Wiltzius P, 1989 J. Chem. Phys. 91 3258
[8] Bailey A E, Poon W C K, Christianson R J, Schofield A B, Gasser U, Prasad V, Manley S, Segre P N, Cipelletti L, Meyer W V, Doherty M P, Sankaran S, Jankovsky A L, Shiley W L, Bowen J P, Eggers J C, Kurta C, Lorik T, Jr, Pusey P N, Weitz D A 2007 Phys. Rev. Lett. 99 205701
[9] Tanaka H 1995 Phys. Rev. E 51 1313
[10] Binder K 1987 Rep. Prog. Phys. 50 783
[11] Wang C P, Liu X J, Ohnuma I, Kainuma R, Ishida K 2002 Science 297 990
[12] Wang C P, Liu X J, Kainuma R, Takaku Y, Ohnuma I, Ishida K 2004 Metall. Mater. Trans. A 35 1243
[13] Zhao J Z 2006 Script. Mater. 54 247
[14] Zhai W, Wang N, Wei B B 2007 Acta Phys. Sin. 56 2353 (in Chinese) [翟薇, 王楠, 魏炳波 2007 56 2353]
[15] Marangoni C 1871 Ann. Phys. Chem. 143 337
[16] George Hansen, Shan Liu, Shu-Zu Lu 2002 Journal of Crystal Growth 234 731
[17] Jackson K A 1958 Liquid Metals and Solidification (Cleveland: American Society for Metals) p174
[18] Becker R 1938Ann. Phys. 32 128
[19] Young N O, Goldstein J S, Block M J 1959 J. Fluid Mech. 6 350
[20] Schaefer R J, Glicksman M E 1975 Phil. Mag. 32 725
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[1] Cahn J W, Hilliard J E 1959 J. Chem. Phys. 31 539
[2] Cahn J W, Hilliard J E 1959 J. Chem. Phys. 31 688
[3] Siggia E D 1979 Phys. Rev. A 20 595
[4] Aarts D G A L, Schmidt M, Lekkerkerker H N W 2004 Science 304 847
[5] Gunton J D, Miguel M S, Sahni P S 1983 Phase Transitions and Critical Phenomena (Domb C, Lebowitz J L ed.) (London: Academic Press) p269
[6] Bhat S, Tuinier R, Schurtenberger P 2006 J. Phys. Condens. Matter 18 L339
[7] Bates F S, Wiltzius P, 1989 J. Chem. Phys. 91 3258
[8] Bailey A E, Poon W C K, Christianson R J, Schofield A B, Gasser U, Prasad V, Manley S, Segre P N, Cipelletti L, Meyer W V, Doherty M P, Sankaran S, Jankovsky A L, Shiley W L, Bowen J P, Eggers J C, Kurta C, Lorik T, Jr, Pusey P N, Weitz D A 2007 Phys. Rev. Lett. 99 205701
[9] Tanaka H 1995 Phys. Rev. E 51 1313
[10] Binder K 1987 Rep. Prog. Phys. 50 783
[11] Wang C P, Liu X J, Ohnuma I, Kainuma R, Ishida K 2002 Science 297 990
[12] Wang C P, Liu X J, Kainuma R, Takaku Y, Ohnuma I, Ishida K 2004 Metall. Mater. Trans. A 35 1243
[13] Zhao J Z 2006 Script. Mater. 54 247
[14] Zhai W, Wang N, Wei B B 2007 Acta Phys. Sin. 56 2353 (in Chinese) [翟薇, 王楠, 魏炳波 2007 56 2353]
[15] Marangoni C 1871 Ann. Phys. Chem. 143 337
[16] George Hansen, Shan Liu, Shu-Zu Lu 2002 Journal of Crystal Growth 234 731
[17] Jackson K A 1958 Liquid Metals and Solidification (Cleveland: American Society for Metals) p174
[18] Becker R 1938Ann. Phys. 32 128
[19] Young N O, Goldstein J S, Block M J 1959 J. Fluid Mech. 6 350
[20] Schaefer R J, Glicksman M E 1975 Phil. Mag. 32 725
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