Thermodynamics of Copper Dissolution into MnO–SiO2–MnS Inclusion System

Park, Jin Gyun; Park, Joo Hyun; Lee, Young Seok; Jung, Seung Boo; Min, Dong Joon

doi:10.2355/isijinternational.49.171

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…This also lends strong support to the analysis shown in the previous section. A similar observation has been reported by Hasegawa et al [35] and Park et al [37] for the MnOSiO 2 -MnS liquid oxysulfide by analyzing the saturation boundary of MnS as a function of X SiO2 /(X MnO + X SiO2 ), although no explanation was proposed.…”

Section: B Linking To Phase Equilibria In the Mno-sio 2 -Al 2 O 3 -Msupporting

confidence: 66%

Thermodynamics of MnO-SiO2-Al2O3-MnS Liquid Oxysulfide: Experimental and Thermodynamic Modeling

Kim

Woo

Gaye

et al. 2011

Metall Mater Trans B

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The activities of MnO and MnS in a MnO-SiO 2 -Al 2 O 3 (or AlO 1.5 )-MnS liquid oxysulfide solution were investigated by employing the gas/liquid/Pt-Mn alloy chemical equilibration technique under a controlled atmosphere at 1773 K (1500°C). Also, the sulfide capacity, defined as C S = (wt pct S)(pO 2 /pS 2 ) 1/2 , in MnO-SiO 2 -Al 2 O 3 slag with a dilute MnS concentration was obtained from the measured experimental data. As X SiO2 /(X MnO + X SiO2 ) in liquid oxysulfide increases, the activity coefficient of MnO decreases, while that of MnS first increases and then decreases. As X(AlO 1.5 ) in liquid oxysulfide increases, the activity coefficient of MnS increases, while no remarkable change is observed for the activity coefficient of MnO. The behavior of the activity coefficient of MnS was qualitatively analyzed by considering MnO + A x S y (SiS 2 or Al 2 S 3 ) = MnS + A x O y (SiO 2 or Al 2 O 3 ) reciprocal exchange reactions in the oxysulfide solution. The behavior was shown to be consistent with phase diagram data, namely, the MnS saturation boundary. Quantitative analysis of the activity coefficient of the oxysulfide solution was also carried out by employing the modified quasichemical model in the quadruplet approximation.

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Section: B Linking To Phase Equilibria In the Mno-sio 2 -Al 2 O 3 -Msupporting

confidence: 66%

Thermodynamics of MnO-SiO2-Al2O3-MnS Liquid Oxysulfide: Experimental and Thermodynamic Modeling

Kim

Woo

Gaye

et al. 2011

Metall Mater Trans B

View full text Add to dashboard Cite

show abstract

“…Of the particles, the unclear point had been reported about the observation and analysis of copper sulfides (Cu x S). [2][3][4][5][6][7][8][9] Several authors reported that when steels were rapidly cooled from a high temperature of 1 473 to 1 573 K, and observed after the SPEED etching, copper sulfides were found abundantly precipitated. [10][11][12] This temperature range was higher than the precipitation temperature (about 973 K) predicted by thermochemical calculation programs such as FactSage.…”

Section: Development Of Analysis Methods For Sulfide In Steel With Chementioning

confidence: 99%