The activity of sulphur in liquid iron: the influence of carbon

Kitchener, J. A.; Bockris, J. O'm.; Liberman, A. L.

doi:10.1039/df9480400049

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Graphite Dissolution Behaviour1

Fe-c-s System1

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1950

2014

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Cited by 10 publications

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“…diam., wall thickness, 0.01 in were used. 8 The crucible was supported on an alumina tube (Morgan Crucible Triangle RR Grade).…”

mentioning

confidence: 99%

Electric transport in liquid silicates

Bockris¹,

Kitchener²,

Davies³

1952

Trans. Faraday Soc.

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“…diam., wall thickness, 0.01 in were used. 8 The crucible was supported on an alumina tube (Morgan Crucible Triangle RR Grade).…”

mentioning

confidence: 99%

Electric transport in liquid silicates

Bockris¹,

Kitchener²,

Davies³

1952

Trans. Faraday Soc.

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“…Once carbon atom has dissociated from the graphite block, energetics does not play a significant role in its mass transfer in the melt. However, C and S atoms are strongly repulsive and tend to displace each other from their neighbourhood [21]. Whereas S moves deeper into the iron melt away from graphite, a locally increased concentration of S does not favour the presence of C. This in turn tends to slow down the diffusion of C in the Fe-C-S melt and adversely affects the rate of mass transfer for carbon.…”

Section: Graphite Dissolution Behaviourmentioning

confidence: 99%

Effect of sulfur on the dissolution behaviour of graphite in Fe‐C‐S melts: A Monte Carlo simulation study

Sahajwalla

Khanna

2003

Scand Jof Metallurgy

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We report a Monte Carlo computer simulation study on a solid graphite/Fe‐C‐S melt system at 1600°C. Atoms in graphite and melt were arranged on a graphitic hexagonal lattice with pair‐wise short‐range interactions. Optimum values of various interaction parameters were used for simulation. On coming in contact with hot melt, carbon atoms from graphite dissolve into iron melt with iron penetrating the graphite lattice. However, there is no evidence of sulfur penetrating the graphite block or remaining in the interfacial region. S atoms tend to move away from graphite, going deep into the iron melt. The presence of sulfur in the melt adversely affects interfacial kinetics, mass‐transfer and overall dissolution rate. These simulation results have been explained in terms of bond energy considerations.

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“…The attractive bond between Fe and S is very strong and is more or less ionic in nature. This strong Fe-S bond is capable of distorting the electron distribution around the Fe atom also affect other bonds made by it (Kitchener et al, 1948). In the event of such a distortion taking place, the resulting bond energy will be a fraction (1−ε) of the energy of the bond made in the absence of a Fe-S bond, with ε ranging between 0 and 1.…”

Section: Fe-c-s Systemmentioning

confidence: 99%