Thermophysical properties of undercooled liquid Ni-Zr alloys: Melting temperature, density, excess volume and thermal expansion

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.

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Density, Excess Volume, Thermal Expansion Coefficient and Intermolecular Hydrogen Bonding of Binary Mixtures of Morpholine+ Isobutanol: A Combined Experimental and Computational Study

Journal of Molecular Liquids ◽

10.1016/j.molliq.2021.118417 ◽

2021 ◽

pp. 118417

Author(s):

Atefeh. Satei ◽

Azim. Soltanabadi

Keyword(s):

Thermal Expansion ◽

Hydrogen Bonding ◽

Thermal Expansion Coefficient ◽

Binary Mixtures ◽

Expansion Coefficient ◽

Excess Volume ◽

Computational Study ◽

Intermolecular Hydrogen Bonding ◽

Density Excess ◽

Volume Thermal Expansion Coefficient

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Density, excess volume, and excess coefficient of thermal expansion of the binary systems of dimethyl carbonate with butyl methacrylate, allyl methacrylate, styrene, and vinyl acetate at T=(293.15, 303.15, and 313.15)K

The Journal of Chemical Thermodynamics ◽

10.1016/j.jct.2008.06.017 ◽

2008 ◽

Vol 40 (12) ◽

pp. 1671-1683 ◽

Cited By ~ 31

Author(s):

Jaime Wisniak ◽

Gladis Cortez ◽

René D. Peralta ◽

Ramiro Infante ◽

Luis E. Elizalde ◽

...

Keyword(s):

Thermal Expansion ◽

Vinyl Acetate ◽

Excess Volume ◽

Binary Systems ◽

Dimethyl Carbonate ◽

Coefficient Of Thermal Expansion ◽

Butyl Methacrylate ◽

Density Excess ◽

Allyl Methacrylate

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A Proposal for a Composite with Temperature-Independent Thermophysical Properties: HfV2–HfV2O7

Materials ◽

10.3390/ma13215021 ◽

2020 ◽

Vol 13 (21) ◽

pp. 5021

Author(s):

Philipp Keuter ◽

Anna L. Ravensburg ◽

Marcus Hans ◽

Soheil Karimi Aghda ◽

Damian M. Holzapfel ◽

...

Keyword(s):

Thermal Expansion ◽

Temperature Coefficient ◽

Thermophysical Properties ◽

Coefficient Of Thermal Expansion ◽

Negative Thermal Expansion ◽

Phase Fraction ◽

Formation Temperature ◽

Oxygen Mobility ◽

Zero Temperature ◽

Coefficient Of Elasticity

The HfV2–HfV2O7 composite is proposed as a material with potentially temperature-independent thermophysical properties due to the combination of anomalously increasing thermoelastic constants of HfV2 with the negative thermal expansion of HfV2O7. Based on literature data, the coexistence of both a near-zero temperature coefficient of elasticity and a coefficient of thermal expansion is suggested for a composite with a phase fraction of approximately 30 vol.% HfV2 and 70 vol.% HfV2O7. To produce HfV2–HfV2O7 composites, two synthesis pathways were investigated: (1) annealing of sputtered HfV2 films in air to form HfV2O7 oxide on the surface and (2) sputtering of HfV2O7/HfV2 bilayers. The high oxygen mobility in HfV2 is suggested to inhibit the formation of crystalline HfV2–HfV2O7 composites by annealing HfV2 in air due to oxygen-incorporation-induced amorphization of HfV2. Reducing the formation temperature of crystalline HfV2O7 from 550 °C, as obtained upon annealing, to 300 °C using reactive sputtering enables the synthesis of crystalline bilayered HfV2–HfV2O7.

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Thermal Expansion of SrZr4-xTix(PO4)6 Ceramics

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.281.169 ◽

2018 ◽

Vol 281 ◽

pp. 169-174

Author(s):

Yang Wang ◽

Yuan Yuan Song ◽

Yuan Yuan Zhou ◽

Lu Ping Yang ◽

Fu Tian Liu

Keyword(s):

Thermal Expansion ◽

Relative Density ◽

Thermophysical Properties ◽

Sintering Temperature ◽

Temperature Range ◽

Thermal Expansion Coefficients ◽

High Relative Density ◽

Low Thermal Expansion ◽

Expansion Coefficients

Low thermal expansion ceramics have been widely applied in multiple fields. In this paper, a series of low thermal expansion ceramics SrZr4-xTix(PO4)6 was prepared and characterized. The SrZr4-xTix(PO4)6 ceramics could be well sintered in the temperature range of 1400~1500 °C. The effect of the addition of Ti substituting Zr and the sintering temperature was studied. The Ceramic with x =0.1 sintered at 1450 °C, the SrZr4-xTix(PO4)6 had a high relative density. The thermal expansion coefficients were about 3.301×10-6 °C-1. It was demonstrated that the microstructure of the SrZr4-xTix(PO4)6 could be altered by adding varying amount of Ti to tailor the thermophysical properties of the material.

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