Determination of standard free energies of formation of Ca3P2 and Ca2Sn at high temperatures

D. J. Min; N. Sano

doi:10.1007/BF02657741

Determination of standard free energies of formation of Ca₃P₂ and Ca₂Sn at high temperatures

D. J. Min, N. Sano

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

The standard free energies of formation of calcium phosphide and calcium stannide were determined by a chemical equilibration technique, yielding the following results: 3Ca(1) + P₂(g) = Ca₃P₂(s) ΔG° = -653,460(±7110) + 144.01(±4.98)T (J/mol)1000 °C to 1300 °C2Ca(1) + Sn(1) = Ca₂Sn(s) ΔG° = -353,970(±1670) + 79.28(±1.26)T (J/mol)1000 °C to 1300 °C 1120 °C The experimental data to express the thermodynamics for removal of phosphorus and tin from molten iron by calcium based slags by other investigators were discussed in terms of the activity co-efficients of Ca₃P₂ and Ca₂Sn in slag melts by using the present results described above.

Original language	English
Pages (from-to)	433-439
Number of pages	7
Journal	Metallurgical Transactions B
Volume	19
Issue number	3
DOIs	https://doi.org/10.1007/BF02657741
Publication status	Published - 1988 Jun

All Science Journal Classification (ASJC) codes

Engineering(all)

Access to Document

10.1007/BF02657741

Cite this

@article{cb953169db9e48c88677c0dcc681012a,

title = "Determination of standard free energies of formation of Ca3P2 and Ca2Sn at high temperatures",

abstract = "The standard free energies of formation of calcium phosphide and calcium stannide were determined by a chemical equilibration technique, yielding the following results: 3Ca(1) + P2(g) = Ca3P2(s) ΔG° = -653,460(±7110) + 144.01(±4.98)T (J/mol)1000 °C to 1300 °C2Ca(1) + Sn(1) = Ca2Sn(s) ΔG° = -353,970(±1670) + 79.28(±1.26)T (J/mol)1000 °C to 1300 °C 1120 °C The experimental data to express the thermodynamics for removal of phosphorus and tin from molten iron by calcium based slags by other investigators were discussed in terms of the activity co-efficients of Ca3P2 and Ca2Sn in slag melts by using the present results described above.",

author = "Min, {D. J.} and N. Sano",

year = "1988",

month = jun,

doi = "10.1007/BF02657741",

language = "English",

volume = "19",

pages = "433--439",

journal = "Metallurgical Transactions B",

issn = "0360-2141",

publisher = "ASM International",

number = "3",

}

TY - JOUR

T1 - Determination of standard free energies of formation of Ca3P2 and Ca2Sn at high temperatures

AU - Min, D. J.

AU - Sano, N.

PY - 1988/6

Y1 - 1988/6

N2 - The standard free energies of formation of calcium phosphide and calcium stannide were determined by a chemical equilibration technique, yielding the following results: 3Ca(1) + P2(g) = Ca3P2(s) ΔG° = -653,460(±7110) + 144.01(±4.98)T (J/mol)1000 °C to 1300 °C2Ca(1) + Sn(1) = Ca2Sn(s) ΔG° = -353,970(±1670) + 79.28(±1.26)T (J/mol)1000 °C to 1300 °C 1120 °C The experimental data to express the thermodynamics for removal of phosphorus and tin from molten iron by calcium based slags by other investigators were discussed in terms of the activity co-efficients of Ca3P2 and Ca2Sn in slag melts by using the present results described above.

AB - The standard free energies of formation of calcium phosphide and calcium stannide were determined by a chemical equilibration technique, yielding the following results: 3Ca(1) + P2(g) = Ca3P2(s) ΔG° = -653,460(±7110) + 144.01(±4.98)T (J/mol)1000 °C to 1300 °C2Ca(1) + Sn(1) = Ca2Sn(s) ΔG° = -353,970(±1670) + 79.28(±1.26)T (J/mol)1000 °C to 1300 °C 1120 °C The experimental data to express the thermodynamics for removal of phosphorus and tin from molten iron by calcium based slags by other investigators were discussed in terms of the activity co-efficients of Ca3P2 and Ca2Sn in slag melts by using the present results described above.

UR - http://www.scopus.com/inward/record.url?scp=51249175240&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=51249175240&partnerID=8YFLogxK

U2 - 10.1007/BF02657741

DO - 10.1007/BF02657741

M3 - Article

AN - SCOPUS:51249175240

SN - 0360-2141

VL - 19

SP - 433

EP - 439

JO - Metallurgical Transactions B

JF - Metallurgical Transactions B

IS - 3

ER -

Determination of standard free energies of formation of Ca₃P₂ and Ca₂Sn at high temperatures

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this