scholarly journals Application of a Modified Lindemann’s Melting Formula to Isentropic and Isothermal Compressibilities of Molten Salts at their Melting Points

1987 ◽  
Vol 1987-7 (1) ◽  
pp. 146-155
Author(s):  
T. Iida
Keyword(s):  
Molten Salts ◽  
Melting Points ◽  
Isentropic And Isothermal Compressibilities

Magnetic susceptibility of alkali n -butyrates and isovalerates near their melting points

1975 ◽  
Vol 342 (1628) ◽  
pp. 39-49 ◽  
Keyword(s):  
Magnetic Susceptibility ◽  
Molten Salts ◽  
Diamagnetic Susceptibility ◽  
Cluster Formation ◽  
Anion Binding ◽  
Melting Transition ◽  
Melting Points ◽  
Clearing Point ◽  
Precursor Effects ◽  
Transition Behaviour

Various physical properties of alkali carboxylates can be used to study precursor effects immediately below or above their melting points. The present paper describes unusual pre-transition behaviour observed in the magnetic susceptibility of molten n -butyrates and isovalerates. This takes the form of a transitory enhancement of diamagnetic susceptibility, by nearly 10% in some cases, when the isotropic melt is cooled through the clearing point and into the mesophase region while a magnetic field (up to 1 T(10 4 G)) is applied. No corresponding changes are observed on taking the salt through the same temperature range but in the inverse direction. Again, no corresponding change is observed with an alkali carboxylate which shows no mesophase melting transition. Present findings can be accounted for on the assumption of cluster formation in the molten salts as these approach their upper melting points, which is also indicated by other evidence. The (transient) enhancement of molecular diamagnetism in this region of temperature may also indicate transient perturbations in the actual cation-anion binding near the transition temperature.

Novel Ionic Liquid Lubricants for Aerospace and MEMS

2005 ◽  
Author(s):  
Barbara J. Kinzig ◽  
Paul Sutor ◽  
Gregory W. Sawyer ◽  
Alison Rennie ◽  
Pamela Dickrell ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Molten Salts ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids ◽  
Melting Points

Room temperature ionic liquids (RTILs) are molten salts with melting points at or below room temperature. RTILs have recently been recognized as novel lubricants. Only a few have previously been evaluated.

Optical Determination of Thermal Conductivity with a Plane Source Technique

1968 ◽  
Vol 23 (1) ◽  
pp. 44-47 ◽  
Author(s):  
Silas E. Gustafsson ◽  
Nils-Olov Halling ◽  
Rolf A. E. Kjellander
Keyword(s):  
Thermal Conductivity ◽  
Steady State ◽  
Thermal Diffusivity ◽  
Sodium Nitrate ◽  
Molten Salts ◽  
Potassium Nitrate ◽  
Plane Source ◽  
Melting Points ◽  
Optical Determination

A recently developed plane source method for non-steady-state measurements of the thermal conductivity and thermal diffusivity of transparent liquids is now being applied to the study of molten salts. In these first measurements sodium nitrate and potassium nitrate have been investigated from their melting points to about 450°C. No temperature dependence of the thermal diffusivity can be established for either of the liquids, whereas the thermal conductivity in both cases increases very slowly with the temperature.A description of the experimental arrangement is included.

Notizen: Measurement of the Hypersonic Velocity in the Molten Salts NaCl and KCl

1979 ◽  
Vol 34 (7) ◽  
pp. 899-900
Author(s):  
Lena M. Torell ◽  
H. E. Gunilla Knape
Keyword(s):  
Molten Salts ◽  
Frequency Range ◽  
Melting Points ◽  
Hypersonic Velocity ◽  
Temperature Range ◽  
Molten Sodium ◽  
Sodium And Potassium

The hypersonic velocity of molten sodium and potassium chlorides has been measured over a temperature range of about 100°C above the melting points. The measurements were carried out at scattering angles 90° and 140°, cor­responding to a 6-10 GHz frequency range. No deviation from previous ultrasonic values of velocity was observed at these frequencies, indicating that the measurements were performed at frequencies lower than any relaxation fre­quency.

Estimation of Melting Points for Some Binary and Tertiary Fluoride Molten Salts

2014 ◽  
Vol 66 (2) ◽  
pp. 322-336 ◽  
Author(s):  
Satoshi Fukada ◽  
Akira Nakamura
Keyword(s):  
Molten Salts ◽  
Melting Points

Chemical physics of molten salts with organic anions,

1969 ◽  
Vol 66 ◽  
pp. 59-63 ◽  
Author(s):  
A. R. Ubbelohde ◽  
F. R. S.
Keyword(s):  
Molten Salts ◽  
Organic Anions ◽  
Chemical Physics

Non-Plasmonic SERS with Silicon: Is It Really Safe? New Insights into Opto-Thermics of Core/Shell Microbeads

2018 ◽  
Author(s):  
Nicolò Bontempi ◽  
Irene Vassalini ◽  
Stefano Danesi ◽  
Matteo Ferroni ◽  
Paolo Colombi ◽  
...  
Keyword(s):  
Critical Role ◽  
Raman Laser ◽  
Core Shell ◽  
Thermal Coupling ◽  
Melting Points ◽  
Experimental Proof ◽  
Weakly Coupled ◽  
Light Management ◽  
Laser Sources ◽  
First Time

<p>Here we investigate for the first time the opto-thermal behavior of SiO<sub>2</sub>/Si core/shell microbeads (Si-rex) irradiated with three common Raman laser sources (lambda=532, 633, 785 nm) under real working conditions. We obtained an experimental proof of the critical role played by bead size and aggregation in heat and light management, demonstrating that in the case of strong opto-thermal coupling the temperature can exceed that of the melting points of both core and shell components. In addition, we also show that weakly coupled beads can be utilized as stable substrates for plasmon-free SERS experiments.</p>

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