Thermodynamic mixing functions and phase equilibria in the nickel-chromium system by high-temperature Knudsen cell mass spectrometry

Journal Article · Wed Feb 01 04:00:00 EST 1995 · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)

DOI:https://doi.org/10.1007/BF02664664· OSTI ID:6874673

Tomiska, J; Kopecky, K; Belegratis, M S ^[1]; Myers, C ^[2]

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1. Univ. of Vienna (Austria). Inst. for Physical Chemistry
2. State Univ. of New York, Binghamton (United States). Dept. of Chemistry

Thermodynamic excess functions of nickel-chromium alloys in the body-centered cubic (bcc) phase have been investigated by computer-aided Knudsen cell mass spectrometry in the temperature range of 1,300 to 1,650 K. Activities, as well as molar excess Gibbs energies, enthalpies, and entropies, were obtained from the ion intensities as a function of composition by fitting to a subregular solution model [2-parameter thermodynamically adapted power (TAP) series: C[sub n][sup H] in J/mol, C[sub 1][sup H] = 3,900, C[sub 2][sup H] = 44,610; C[sub n][sup S] in J/mol[center dot]K, C[sub 1][sup S] = 9.71, C[sub 2][sup S] = 13.52]. Based upon these data, the phase diagram has been recalculated.

• OSTI ID: 6874673
• Journal Information: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Journal Name: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States) Vol. 26:2; ISSN 0360-2133; ISSN MTTABN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360104 -- Metals & Alloys-- Physical Properties
ALLOY SYSTEMS
ALLOYS
BCC LATTICES
BINARY ALLOY SYSTEMS
CHROMIUM ALLOYS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
MATHEMATICAL MODELS
NICKEL ALLOYS
PHASE STUDIES
PHYSICAL PROPERTIES
TERNARY ALLOY SYSTEMS
THERMODYNAMIC PROPERTIES