Thermal-Diffusion in Metal-Sulfide Liquids - Early Results

Publication Status is "Submitted" Or "In Press: 
LDEO Publication: 
Publication Type: 
Year of Publication: 
1991
Editor: 
Journal Title: 
Proceedings of Lunar and Planetary Science
Journal Date: 
Place Published: 
Tertiary Title: 
Volume: 
21
Issue: 
Pages: 
367-373
Section / Start page: 
Publisher: 
ISBN Number: 
0270-9511
ISSN Number: 
Edition: 
Short Title: 
Accession Number: 
ISI:A1991MG41300025
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Call Number: 
Abstract: 

Preliminary thermal diffusion experiments on metal-sulfide liquids indicate that the Soret effect can be of comparable magnitude in metallic system as in silicate systems. In the Fe-Ni-S-P system, S segregates to the hot end of the diffusion couple, P and Fe segregate to the cold end, Ni remains almost unaffected, and the magnitude of the P Soret coefficient increases as S increases. This is because the nonideal interactions between S and P increase dramatically as the concentration of either element increases. The Soret coefficient for P changes in approximate accordance with the model of Jones and Malvin (1990) for changes in (P)D(solid metal/liquid metal). This observation reinforces the Jones and Malvin model and provides a basis for predicting the magnitude of Soret coefficients for minor elements in systems that have not yet been explored experimentally. The sense of the Soret segregation, with P going to the cold end and S going to the hot end, is in accordance with the predictions of Malvin et al. (1986), who speculated that the crystal-pulling experiments of Sellamuthu and Goldstein (1985) might have been influenced by the Soret effect.

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Mg413Times Cited:2Cited References Count:13

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