Isobaric thermal expansion coefficients for water over large temperature and pressure ranges

1985 ◽  
Vol 12 (4) ◽  
pp. 465-478 ◽  
Author(s):  
Thomas F. Irvine ◽  
Mark R. Duignan
Keyword(s):  
Thermal Expansion ◽  
Large Temperature ◽  
Thermal Expansion Coefficients ◽  
Isobaric Thermal Expansion ◽  
Expansion Coefficients ◽  
Temperature And Pressure

Temperature and pressure dependence of the volumetric properties of binary mixtures containing polyhaloalkanes

1999 ◽  
Vol 77 (12) ◽  
pp. 2046-2052 ◽  
Author(s):  
Carmen Jarne ◽  
Manuela Artal ◽  
José Muñoz Embid ◽  
Inmaculada Velasco ◽  
Santos Otín
Keyword(s):  
Thermal Expansion ◽  
Binary Mixtures ◽  
Isothermal Compressibility ◽  
Excess Volume ◽  
Excess Molar Volumes ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients ◽  
Temperature And Pressure ◽  
Density Excess ◽  
Volume Thermal Expansion Coefficient

Densities of binary mixtures of 1,1,2-trichlorotrifluoroethane + dibromomethane, + bromochloromethane, or + bromotrichloromethane were measured over their entire composition ranges at 288.15 and 308.15 K. Thermal expansion coefficients (α) and excess molar volumes (VEm) were calculated. Moreover, densities at 298.15 K and pressures up to 80 bar (1 bar = 100 kPa) were determined for these same mixtures. Isothermal compressibilities (KT) of the pure liquids and their mixtures were obtained.Key words: density, excess volume, thermal expansion coefficient, isothermal compressibility.

scholarly journals Large piezoelectric and thermal expansion coefficients with negative Poisson's ratio in strain-modulated tellurene

2021 ◽  
Author(s):  
Parrydeep Kaur Sachdeva ◽  
Shuchi Gupta ◽  
Chandan Bera
Keyword(s):  
Thermal Expansion ◽  
Poisson’S Ratio ◽  
Piezoelectric Properties ◽  
Poisson's Ratio ◽  
Large Temperature ◽  
Negative Poisson’S Ratio ◽  
Temperature Dependent ◽  
Thermal Expansion Coefficients ◽  
Negative Poisson's Ratio ◽  
Expansion Coefficients

2D tellurene monolayer exhibits excellent piezoelectric properties and an anomalous negative Poisson's ratio under the effect of strain. Tellurene having puckered structure has a large temperature dependent expansion.

Densities, Refractive Indices, Speeds of Sound and Shear Viscosities of Diethylene Glycol Dimethyl Ether Methyl Salicylate at Temperatures from 298.15 to 318.15 K

1994 ◽  
Vol 59 (7) ◽  
pp. 1511-1524 ◽  
Author(s):  
Tejraj M. Aminabhavi ◽  
Hemant T. S. Phayde ◽  
Rajashekhar S. Khinnavar
Keyword(s):  
Thermal Expansion ◽  
Dimethyl Ether ◽  
Mole Fraction ◽  
Diethylene Glycol ◽  
Methyl Salicylate ◽  
Refractive Indices ◽  
Thermal Expansion Coefficients ◽  
Isobaric Thermal Expansion ◽  
Diethylene Glycol Dimethyl Ether ◽  
Expansion Coefficients

Densities, refractive indices, speeds of sound and viscosities of the diethylene glycol dimethyl ether - methyl salicylate system were measured as a function of mole fraction at 298.15, 303.15, 308.15, 313.15 and 318.15 K. The results are fitted by a power series equation involving both the temperature and mole fraction variables. The basic physical data of the mixtures are further used to calculate the excess molar volume VE, changes in isentropic compressibility ∆β, changes in refractivity ∆R and changes in viscosity ∆η. The results are fitted by the Redlich-Kister polynomial relation. The isobaric thermal expansion coefficients of the mixtures are also determined from density measurements. The data are compared with those obtained from equations derived by differentiation of the Lorentz-Lorenz and Eykman relations. Refractive indices of the mixture are used to test the validity of mixing relations. The changes in isobaric thermal expansion coefficients ∆α of the mixtures were examined. Viscosity data were tested in terms of the McAllister, Heric and Auslaender relations.

scholarly journals Densities, Apparent Molar Volume, Expansivities, Hepler’s Constant, and Isobaric Thermal Expansion Coefficients of the Binary Mixtures of Piperazine with Water, Methanol, and Acetone at T = 293.15 to 328.15 K

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Qazi Mohammed Omar ◽  
Jean-Noël Jaubert ◽  
Javeed A. Awan
Keyword(s):  
Thermal Expansion ◽  
Molar Volume ◽  
Binary Mixtures ◽  
Apparent Molar Volume ◽  
Apparent Molar Volumes ◽  
Molar Volumes ◽  
Temperature Range ◽  
Thermal Expansion Coefficients ◽  
Isobaric Thermal Expansion ◽  
Expansion Coefficients

The properties of 3 binary mixtures containing piperazine were investigated in this work. In a first step, the densities for the two binary mixtures (piperazine + methanol) and (piperazine + acetone) were measured in the temperature range of 293.15 to 328.15 K and 293.15 to 323.15 K, respectively, at atmospheric pressure by using a Rudolph research analytical density meter (DDM 2911). The concentration of piperazine in the (piperazine + methanol) mixture was varied from 0.6978 to 14.007 mol/kg, and the concentration of piperazine in the (piperazine + acetone) mixture was varied from 0.3478 to 1.8834 mol/kg. On the other hand, the density data for the (piperazine + water) mixture were taken from the literature in the temperature range of 298.15 to 328.15 K. In a second step, for the 3 investigated systems, the apparent molar volume (Vϕ) and the limiting apparent molar volume (Vϕ0) at infinite dilution were calculated using the Redlich–Mayer equation. The limiting apparent molar volumes (Vϕ0) were used to study the influence of the solute-solvent and solute-solute interactions. The temperature dependency of the apparent molar volumes was used to estimate the apparent molar expansibility, Hepler’s constant ∂2Vϕ0/∂T2P, and isobaric thermal expansion coefficients αP.

Influence of Cr deficiency on sintering, thermal expansion and electrical properties of La0.75Sr0.25Cr1−xO3−δ as a SOFC interconnect material

2016 ◽  
Vol 30 (11) ◽  
pp. 1650127 ◽  
Author(s):  
Yi Ren ◽  
Wen Ma ◽  
Xiaoying Li ◽  
Jun Wang ◽  
Yu Bai ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Electrical Properties ◽  
Perovskite Phase ◽  
Ignition Process ◽  
Thermal Expansion Coefficients ◽  
Auto Ignition ◽  
Pure Perovskite Phase ◽  
Maximum Conductivity ◽  
Expansion Coefficients ◽  
Interconnect Material

The SOFC interconnect materials La[Formula: see text]Sr[Formula: see text]Cr[Formula: see text]O[Formula: see text] [Formula: see text]–[Formula: see text] were prepared using an auto-ignition process. The influences of Cr deficiency on their sintering, thermal expansion and electrical properties were investigated. All the samples were pure perovskite phase after sintering at 1400[Formula: see text]C for 4 h. The cell volume of La[Formula: see text]Sr[Formula: see text]Cr[Formula: see text]O[Formula: see text] decreased with increasing Cr deficient content. The relative density of the sintered bulk samples increased from 93.2% [Formula: see text] to a maximum value of 94.7% [Formula: see text] and then decreased to 87.7% [Formula: see text]. The thermal expansion coefficients of the sintered bulk samples were in the range of [Formula: see text]–[Formula: see text] (30–1000[Formula: see text]C), which are compatible with that of YSZ. Among the investigated samples, the sample with 0.02 Cr deficiency had a maximum conductivity of 40.4 Scm[Formula: see text] and the lowest Seebeck coefficient of 154.8 [Formula: see text]VK[Formula: see text] at 850[Formula: see text]C in pure He. The experimental results indicate that La[Formula: see text]Sr[Formula: see text]Cr[Formula: see text]O[Formula: see text] has the best properties and is much suitable for SOFC interconnect material application.

Novel Silicon-Elastomers for Advanced Soft Lithography

2006 ◽  
Vol 947 ◽  
Author(s):  
Kyung Choi
Keyword(s):  
Thermal Expansion ◽  
High Resolution ◽  
Soft Lithography ◽  
Materials Properties ◽  
Nano Scale ◽  
Thermal Expansion Coefficients ◽  
High Thermal Expansion ◽  
Expansion Coefficients

ABSTRACTHigh resolution pattern transfers in the nano-scale regime have been considerable challenges in ‘soft lithography’ to achieve nanodevices with enhanced performances. In this technology, the resolution of pattern integrations is significantly rely on the materials' properties of polydimethylsiloxane (PDMS) stamps. Since commercial PDMS stamps have shown limitations in nano-scale resolution soft lithography due to their low physical toughness and high thermal expansion coefficients, we developed stiffer, photocured PDMS silicon elastomers designed, specifically for nano-sized soft lithography and photopatternable nanofabrications.

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