THE DENSITY OF LIQUID COPPER FROM ITS MELTING POINT (1356 K.) TO 2500 K. AND AN ESTIMATE OF ITS CRITICAL CONSTANTS

Journal Article · Fri Jun 01 04:00:00 EDT 1962 · Journal of Physical Chemistry (U.S.)

DOI:https://doi.org/10.1021/j100812a027· OSTI ID:4812993

Cahill, J A; Kirshenbaum, A D

The density of liquid copper was determined in an argon atmosphere by the immersed sinker method from 1356 to 2500 deg K. Zirconium dioxide coated molybdenum sinkers with aluminum oxide and zirconium oxide crucibles were employed below 2100 deg K, while graphite sinkers and crucibles were used to 2500 deg K. The density, with respect to temperature, is best expressed by the equation D g/cm/sup 3/ = point (1356 deg K) was 7.992 g/cm/sup 3/ and 6.792 g/cm/ sup 3/ at the normal boiling point (2855 deg K). The molar volumes and thermal coefficients of expansion of liquid copper were calculated. Copper upon melting was found to expand 4.51% of its solid volume. The critical constants of copper were estimated to be: T/sub crit./ = 8900 plus or minus 900 deg K; D/sub crit/. = 1.04 plus or minus 0.2 g/cm/sup 3/; V/sub Mcrit/.= 61 plus or minus 10 cm/ sup 3//mole. (auth)

• Research Organization: Temple Univ., Philadelphia
• NSA Number: NSA-16-022629
• OSTI ID: 4812993
• Journal Information: Journal of Physical Chemistry (U.S.), Journal Name: Journal of Physical Chemistry (U.S.) Vol. Vol: 66; ISSN JPCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALUMINUM OXIDES
ARGON
BOILING
COATING
CRUCIBLES
DENSITY
EQUATIONS
EXPANSION
GRAPHITE
HIGH TEMPERATURE
INERT GASES
LIQUID METALS
MACHINE PARTS
MELTING POINTS
METALS, CERAMICS, AND OTHER MATERIALS
MOLECULES
MOLYBDENUM
QUANTITATIVE ANALYSIS
VOLUME
ZIRCONIUM OXIDES