A simple relationship between the temperature dependence of the density of liquid metals and their boiling temperatures

A modified pycnometric method has been developed to obtain the accurate density value of liquid nickel and Ni-Cr alloy in the liquid and solid-liquid coexistence states. The density of liquid nickel decreases linearly with increasing temperature in the range from the melting point to 1873 K. The density at the melting point and the volume thermal expansion coefficient of liquid nickel are 7.91 MgÁm À3 and 1:87 Â 10 À4 K À1 , respectively. The density of Ni-Cr alloys in the liquid and solid-liquid coexistence states was found to decrease linearly with increasing temperature and chromium concentration in the alloy. The temperature coefficient of density of Ni-Cr alloys was found to change at the liquidus temperature. The absolute value of temperature coefficient of density in the solid-liquid coexistence state is larger than that of the liquid alloy.

show abstract

“…19) Using Steinberg's formula, 22) the density data for liquid nickel can be represented by the following equation:…”

Section: Temperature Dependence Of Density Of Liquid Nickelmentioning

confidence: 99%

Measurement of the Density of Ni-Cr Alloy by a Modified Pycnometric Method

et al. 2004

View full text Add to dashboard Cite

show abstract

“…25) If we follow Steinberg's formula, 25) the density data of liquid nickel can be represented by the following equation:…”

Section: Temperature Dependence Of Density Of Liquid Nickelmentioning

confidence: 99%

Density of Ni-Cr Alloy in Liquid and Solid-Liquid Coexistence States

Mukai

Xiao

2002

Mater. Trans.

View full text Add to dashboard Cite

A modified sessile drop method was developed to obtain the precise density values for liquid nickel and nickel-chromium alloy in liquid and solid-liquid coexistence states. The density of liquid nickel decreases linearly with increasing temperature in the range from the melting point to 1923 K. The density at the melting point and the thermal expansion coefficient of liquid nickel are 7.91 Mg·m −3 and 1.81 × 10 −4 K −1 , respectively. The density of nickel-chromium alloy in liquid or solid-liquid coexistence state decreases linearly with increasing the temperature and chromium concentration in the alloy. The temperature coefficient of density of nickel-chromium alloy changes at the liquidus temperature. The absolute value of the temperature coefficient of density in solid-liquid coexistence state is larger than that in liquid state.

show abstract

“…It is found experimentally that the temperature dependence of density for Flux C is slightly curve-linear. In this paper, however, the temperature dependence of density was represented by the following equation 13) over the experimental temperature range, even though this equation is usually applied to density of liquid metals. 2) where ρ is density, ρ m is density at melting point T m and K is temperature coefficient at constant pressure.…”

Section: Esl Methods Measurementsmentioning

confidence: 99%