2 edition of Measurement of the ultrasonic absorption and velocity in molten salts. found in the catalog.
Measurement of the ultrasonic absorption and velocity in molten salts.
Roland W. Higgs
Written in English
|LC Classifications||QC233 .H6|
|The Physical Object|
|Number of Pages||26|
|LC Control Number||59004883|
ABSTRACT: Ultrasound absorption spectra of four 1-alkylmethylimidazolium bis(triﬂuoromethylsulfonyl)imides were deter-mined as a function of the alkyl chain length on the cation from 1-propyl to 1-hexyl from to K at ambient pressure. Herein, the ultrasound absorption measurements were carried out. The study of molten salts thermodynamic functions led us to develop Brillouin spectroscopy measurements of hypersonic velocity in sodium and potassium chlorides.
The ultrasonic velocity and sound absorption measurements were also carried out to investigate the dynamical properties. The sound absorption for this molten salt decreases with increasing temperature, while the ultrasonic velocity is about m/s above melting temperature and almost constant with increasing temperature. Ultrasonic velocity measurements in liquids with high resolution techniques, selected applications book contributions [70, 73, 79, 95–97] and reviews [5, 75, 98, 99]. Early benchmark publications are Data obtained as a byproduct of ultrasonic absorption spectrometry with resonators at lower frequencies.
3. Velocity measurements in liquid metal alloys To prove the capability of the integrated ultrasonic sensor for applications at high temperatures velocity measurements were performed in metallic melts. Here, we report about experiments made in PbBi at temperatures between °C and °C and in CuSn at temperatures of about °C. various molten salts was studied extensively by Oak Ridge National Laboratory (ORNL) from the s through the s in support of the MSRE and the Molten Salt Breeder Reactor programs. Several types of molten salts, including LiF-BeF 2 (also known as FLiBe [ mol%]), LiF-NaF-KF (also known as FLiNaK [ mol%]), and KCl-MgCl.
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Measurements of the ultrasonic absorption and velocity in various molten Group I nitrates, molten CdCl 2 and molten mixtures of NaNo 3 and KNO 3 were made for different temperatures and frequencies using the pulse technique.
The molten salts and molten salt mixtures were compared with various organic liquids and their mixtures and found to Author: R. Higgs, T. Litovitz. Measurements of ultrasonic absorption and velocity were made in the molten salts KNO 3, NaNO 3, AgNO 3, LiNO 3, CdCl 2, and the molten salt mixture NaNO 3 ‐ KNO 3.
The results indicate that these molten salts exhibit a structural viscosity similar to that found in water and associated organic by: Measurements of ultrasonic absorption and velocity were made in the molten salts KNO3, NaNO3, AgNO3, LiNO3, CdCl2, and the molten salt mixture NaNO3‐KNO3.
The results indicate that these molten salts exhibit a structural viscosity similar to that found in water and associated organic by: adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86AAuthor: R.
Higgs, T. Litovitz. The absorption and velocity of ultrasonic waves in molten salts are studied with an improved pulse method, which allows an exact and immediate measurement of the runtime of the impulses and of the. The absorption and velocity of ultrasonic waves in molten salts are studied with an improved pulse method, which allows an exact and immediate measurement of the runtime of the impulses and of the amplitude of the recorded signals.
The measurements are performed in the pure molten salts sodium nitrate, potassium nitrate, and silver nitrate as well as in the three binary mixtures of these salts in the temperature range between K and K. The book opens with a discussion of the sources of ultrasound.
This is followed by separate chapters on the properties and detection of ultrasonic radiation; measurement of propagation constants, i.e., the velocity and absorption, of ultrasound; ultrasound propagation in gases, liquids, and solids; and ultrasound propagation in aerosols.
Longitudinal ultrasonic‐absorption and velocity measurements were made in the frequency range 5–95 and 5–45 Mc, respectively. Shear‐elasticity measurements were obtained in the frequency range 43– Mc.
The viscosity range covered was 3 60 poise. The ultrasonic velocity and sound absorption for molten AgCl–AgI and AgBr–AgI mixtures were measured by a pulse-transmission method using the difference-path technique. The frequency of ultrasonic waves used for the measurements were 10 and 20 MHz The data were obtained in the temperature range from the melting temperature to about °C under Ar.
version for ultrasound absorption measurements in liquids. years rare earth elements and their salts become more used. Kaatze U. et al. Ultrasonic velocity measurements in. Ultrasonic Velocity Measurement. Ultrasonic velocity measurements are found to be useful for on-line assessment of the extent of degradation of mechanical properties associated with precipitation of intermetallics in Inconel From: Encyclopedia of Materials: Science and Technology, Related terms: Polymethyl Methacrylates; Precipitate.
measurement method of viscosity and density of the molten salt fuel. These two properties are critical to know but are impossible to measure with current devices because of the temperature, the corrosiveness and the radioactivity of the molten salt.
An alternative way of measuring these properties is by ultrasonic non-destructing testing. This. Ultrasonic absorption and velocity measurements have been made in potassium–rubidium and sodium–cesium alloys at temperatures from 25 (or the liquidus points) to °C.
It has been found that the potassium–rubidium system behaves as an ideal liquid mixture. For both potassium–rubidium and sodium–cesium alloys, Rao's constant and Wada's constant calculated from measured velocity. Tel: + 92ext. Telefax: +The ultrasonic velocity and absorption of molten Cu(Brl_xC1x) have been measured by a pulse-transmission method using the difference /93/$ - Elsevier Science Publishers B.V.
Journal of Non-CrystaJline Solids / () North-Holland ULTRASONIC VELOCITY AND ATTENUATION IN MOLTEN SALTS Shin'ichi TAKEDA, Yoshiyuki SHIRAKAWA,+ Koh-ichi TAKESAWA,** Shfizi HARADA,++ and Shigeru TAMAKI+ College of General Education, Kyushu University, FukuokaJapan + Department of.
Measurements of ultrasonic absorption in liquids show values which exceed the classical values calculated from viscosity and heat conductions by an order of magnitude. In terrestrial experiments, the pulse-transmission and Debye-Sears methods were used to investigate the absorption in binary nitrate melts as a function of composition and frequency.
Purchase Molten Salts Handbook - 1st Edition. Print Book & E-Book. ISBNUltrasonic Propagation in Liquid Bismuth and Mercury BY J. JARZYNSKI Department of Physics, Imperial College, London, S.W.7 MS.
received 9th October Abstract. A pulse technique has been used to measure ultrasonic absorption and velocity in liquid bismuth and mercury at temperatures up to Oc and at fre- quencies of 68 Mcis and 92 Mcls. The pulse echo overlap method was employed to measure the ultrasonic velocity over the temperature range from 10 to 90°C; the high-Q ultrasonic resonator method was used for the measurement of the absorption coefficient at 20°C.
Ultrasonic contrapropagation methods have been used to measure the flow of natural gas since the s, flare gases since the s, and smokestack gases in cem (continuous emissions monitoring) since the s.
Since the early s, ultrasonic clamp-on flow measurements, previously restricted mainly to liquids, were found. Ultrasonic absorption and velocity have been measured in molten bismuth and lead from the melting point to °C.
Both liquids were found to exhibit a volume viscosity which increased with increasing temperature.Abstract The hypersonic velocity of molten sodium and potassium chlorides has been measured over a temperature range of about °C above the melting points.In fact, this small ultrasonic velocity, i.e., large compressibility for SiO2 is in accord with the results report-ed by Laberge et al) and Bucaro and Dardy) However, the compositional dependency of ultrasonic velocities of molten silicates has not been interpreted yet from the view-Table 1.
Previous ultrasonic velocity studies on molten.