Citations with the tag: MATERIALS -- Thermal properties
Results 1 - 50
- National Metrological Institutes.
// High Temperatures -- High Pressures; 2010, Vol. 39 Issue 2, preceding p83
An introduction to the journal is presented in which the editor cites the task of the National Metrology Institutes (NMIs), and provides an overview of the 18th European Conference in Thermophysical Properties in Pau.
- A thermophysical study of the melting process in alkyl chain metal...
Cheda, J.A.R.; Redondo, M.I.; Garcia, M.V.; de la Fuente, F.L. Lopez; Fernandez-Martin, F.; Westrum Jr., E.F. // Journal of Chemical Physics; 8/22/1999, Vol. 111 Issue 8, p3590
Reports on a thermophysical study of the melting process in alkyl chain metal thallium alkanoates. Recognition of the importance of the anomalous gradual enhancement in the heat-capacity curve; Methylene contribution to the lattice heat capacity; Phase behavior as function of chain length.
- Thermophysical characterization of artificially aged papers by means of the photothermal...
Bertolotti, M.; Ligia, S. // Journal of Applied Physics; 3/1/1999, Vol. 85 Issue 5, p2881
Presents information on a study which determined the thermophysical properties of artificially aged paper samples by means of photothermal deflection technique. Theory; Experimental results and discussion; Conclusions.
- On the Thermophoretic Motion of a Heated Spherical Drop in a Viscous Liquid.
Malai, N. V. // Technical Physics; Nov2002, Vol. 47 Issue 11, p1380
Expressions for the force and velocity of the thermophoretic motion of a spherical drop in a viscous liquid are derived for arbitrary temperature differences between the surface ofthe drop and regions away from it. The temperature dependence of the viscosity is taken into account in the form of...
- dc-ac hot-wire procedure for determining thermophysical properties under pressure.
Nilsson, O.; Sandberg, O.; B�ckstr�m, G. // Review of Scientific Instruments; Sep86, Vol. 57 Issue 9, p2303
The paper describes a new hot-wire method for simultaneous determination of thermal conductivity and heat capacity per unit volume of electrically insulating liquids and solids under pressure. The method uses dc heating of the hot wire, whereas the temperature increase is recorded by an ac...
- Thermodynamic properties of 1,1,1,2-tetrafluoroethane + polyether mixtures up to 60 MPa.
Comu�as, M. J. P.; Boned, C.; Baylaucq, A.; L�pez, E. R.; Fern�ndez, J. // Canadian Journal of Chemistry; Aug2004, Vol. 82 Issue 8, p1271
In this work we report several derived thermodynamic properties, the isothermal compressibility (?T), the isobaric thermal expansion coefficient (ap), and the internal pressure (p), and their excess functions (?TE, apE, and pE) for the refrigerant + lubricant mixtures HFC-134a + triethylene...
- Coffee-Can "ASTRONAUT".
Comu�as, M. J. P.; Boned, C.; Baylaucq, A.; L�pez, E. R.; Fern�ndez, J. // Science World (Teacher's Edition); 10/15/2001, Vol. 58 Issue 4, p5
Presents an experiment on how different colors, surfaces and materials with thermal and insulating properties affect an object's ability to absorb and radiate heat.
- Influence of heat treatment on the electrophysical properties of thin films of copperï¿½indium diselenide.
Magomedov, M.-R. A.; Amirkhanova, Dzh. Kh.; Ismailov, Sh. M.; Khokhlachev, P. P.; Zubairuev, R. Z. // Technical Physics; Mar97, Vol. 42 Issue 3, p282
An investigation of the structural, electrical, optical, and thermophysical properties is carried out on thin polycrystalline films of the ternary semiconductor CuInSe[sub 2], which is potentially useful for fabricating solar cells. The thin films were obtained by thermal evaporation of...
- Crossover relations for ï¿½simpleï¿½ systems in the critical region.
Neruchev, Yu.; Bolotnikov, M. // High Temperature; Jan2008, Vol. 46 Issue 1, p40
A differential relation is suggested, which relates the energy of intermolecular interaction (IMI) to the P-V-T parameters of a simple condensed system. This relation is used to derive crossover relations which describe the thermophysical properties of the liquid and vapor phases in the critical...
- Calculation of the thermophysical properties of ground state sodium atoms.
Holland, Paul M.; Biolsi, Louis // Journal of Chemical Physics; 7/15/1987, Vol. 87 Issue 2, p1261
Transport properties of dilute monatomic gases depend on the two body interaction potentials between the atoms. When two ground state sodium atoms interact, they can follow either of two potential energy curves corresponding to the Na2 molecule in the X 1S+g or the 3S+u state. Transport...
- Computer simulation study of the approximations associated with the generalized Flory theories.
Kumar, Sanat K.; Szleifer, Igal; Hall, Carol K.; Wichert, John M. // Journal of Chemical Physics; 6/8/1996, Vol. 104 Issue 22, p9100
The chain increment method and configurational bias Monte Carlo methods are used to test the approximations made in the derivation of the generalized Flory-Dimer (GF-D) theory for tangent hard sphere chains. Insertion probabilities and residual chemical potentials are calculated for hard chain...
- Nonlinear thermal response at the glass transition.
Schick, C.; Merzlyakov, M. // Journal of Chemical Physics; 8/8/1999, Vol. 111 Issue 6, p2695
Focuses on the description of frequency dependent heat capacity at the glass transition based on the Tool-Narayanaswamy-Moynihan approach of structural recovery. Measurement of the response at medium temperature amplitudes in the appearance of the first nonlinearities; Support for the...
- Temperature dependence of thermophysical properties of GaAs/AIAs periodic structure.
Yu, X.Y.; Chen, G. // Applied Physics Letters; 12/11/1995, Vol. 67 Issue 24, p3554
Investigates the temperature dependence of the thermophysical properties of gallium arsenide/aluminum arsenide periodic structure. Method used in measuring thermal diffusivity; Source of the structure's thermal conductivity; Assessment on the cause of reduction in thermal conductivity.
- Temperature determination in shocked condensed materials using Raman scattering.
Pangilinan, G.I.; Gupta, Y.M. // Applied Physics Letters; 2/24/1997, Vol. 70 Issue 8, p967
Examines the use of Raman scattering measurements in determining temperature in shocked condensed materials. Use of liquid carbon tetrachloride shocked to 12 giga Pascal; Changes in the ratio of antistokes to stokes intensities; Outline of procedures for obtaining precise temperatures.
- Dependence of the ferrimagnetic resonance linewidth on sintering conditions in manganese ferrite.
Flores, A. G.; Raposo, V. // Journal of Applied Physics; 2/15/1999, Vol. 85 Issue 4, p2293
Provides information on a study which presented the variation of the ferrimagnetic resonance linewidth with temperature in both single and polycrystalline manganese ferrites. Sample preparation; Measurement system; Results and discussion.
- Methods of Determining the Characteristics of Dispersed Media at a Phase Transition.
Permyakov, P. P. // Russian Physics Journal; Mar2004, Vol. 47 Issue 3, p240
Gradient methods of determining the thermophysical characteristics of dispersed media at phase transitions are suggested. The reliability and the rate of convergence of the suggested methods are tested for a model problem. A comparison of the results of reconstructing the thermophysical...
- Extension of the Wuï¿½Jing equation of state for highly porous materials: Thermoelectron based theoretical model.
Huayun, Geng; Qiang, Wu; Hua, Tan; Lingcang, Cai; Fuqian, Jing // Journal of Applied Physics; 11/15/2002, Vol. 92 Issue 10, p5924
A thermodynamic equation of state (EOS) for thermoelectrons is derived which is appropriate for investigating the thermodynamic variations along isobaric paths. By using this EOS and the WuJing (WJ) model, [Q. Wu and F. Jing J. Appl. Phys. 80, 4343 (1996)] an extended Hugoniot EOS model is...
- Extension of the Wuï¿½Jing equation of state for highly porous materials: Calculations to validate and compare the thermoelectron model.
Huayun, Geng; Qiang, Wu; Hua, Tan; Lingcang, Cai; Fuqian, Jing // Journal of Applied Physics; 11/15/2002, Vol. 92 Issue 10, p5917
In order to verify and validate the newly developed thermoelectron equation of state (EOS) model that is based on the Wu-Jing EOS [J. Appl. Phys. 80, 4343 (1996); Appl. Phys. Lett. 67, 49 (1995)], calculations of shock compression behavior have been made on five different porous metals: iron,...
- Activation energy and enthalpy of decomposition for the Fe17Sm2 nitride.
Cabral, F.A.O.; Gama, S. // Journal of Applied Physics; 4/17/1997, Vol. 81 Issue 8, p5109
Reports that decomposition studies of the Fe17Sm2N3 compound were performed with the use of a Calvet-type microcalorimeter and simultaneous gravimetric and differential thermal analyzer (DTA). Onset temperature of decomposition; Enthalpy associated with the decomposition.
- Epitaxial Pb--Fe--O film with large planar magnetic anisotropy on (0001) sapphire.
Dorsey, P.C.; Qadri, S.B. // Applied Physics Letters; 3/3/1997, Vol. 70 Issue 9, p1173
Examines epataxial lead-iron-oxide films through large planar magnetic anisotropy onto single-crystal (0001) substrates. Results of film composition and thickness measurements; Structure and out-plane orientation of lead films; Analysis of hysteresis curves of lead...films.
- Thermal Conductivity in Nanoporous Gold Films during Electron-Phonon Nonequilibrium.
Hopkins, Patrick E.; Norris, Pamela M.; Phinney, Leslie M.; Policastro, Steven A.; Kelly, Robert G. // Journal of Nanomaterials; 2008, p1
The reduction of nanodevices has given recent attention to nanoporous materials due to their structure and geometry. However, the thermophysical properties of these materials are relatively unknown. In this article, an expression for thermal conductivity of nanoporous structures is derived based...
- Dynamical heterogeneities below the glass transition.
Vollmayr-Lee, K.; Kob, W.; Binder, K.; Zippelius, A. // Journal of Chemical Physics; 3/22/2002, Vol. 116 Issue 12, p5158
We present molecular dynamics simulations of a binary Lennard-Jones mixture at temperatures below the kinetic glass transition. The 'mobility' of a particle is characterized by the amplitude of its fluctuation around its average position. The 5% particles with the largest/smallest mean amplitude...
- UNIFAC calculation of thermodynamic properties of binary 1-chloroalkane + alkane and a,?-dichloroalkane + alkane mixtures: Comparison with Nitta-Chao and DISQUAC predictions.
Garcia, J.; Lopez, E.R.; Comu�as, M.J.P.; Lugo, L.; Fernandez, J. // Canadian Journal of Chemistry; May2003, Vol. 81 Issue 5, p392
Determines the interaction parameters between chlorine and methylene groups. Application of several versions of UNIFAC model; Discussion on the results; Conclusion.
- Growth of congruently melting Ca0.59Sr0.41F2 crystals and study of their properties.
Karimov, D. N.; Komar'kova, O. N.; Sorokin, N. I.; Bezhanov, V. A.; Chernov, S. P.; Popov, P. A.; Sobolev, B. P. // Crystallography Reports; May2010, Vol. 55 Issue 3, p518
Homogeneous crystals of Ca0.59Sr0.41F2 alloy (sp. gr., Fm $$ \bar 3 $$ m, a = 0.56057 nm), corresponding to the point of minimum in the melting curve in the CaF2-SrF2 phase diagram, have been grown by the vertical Bridgman method. The optical, mechanical, electrical, and thermophysical...
- Effect of thermal nonlinearity in high-absorption media on the parameters of the photoacoustic signal detected by the gas microphone method: The fundamental and second harmonics.
Madvaliev, U.; Salikhov, T.Kh; Sharifov, D.M. // Technical Physics; Jun2006, Vol. 51 Issue 6, p765
A perturbation theory is put forward that describes the effect of thermal nonlinearity due to the temperature dependence of the thermophysical parameters of high-absorption systems with a low thermal conductivity on the parameters of the photoacoustic signal detected by the gas microphone...
- Thermophysical properties affecting safety and performance of nuclear fuel.
Ronchi, Claudio // High Temperature; Jul2007, Vol. 45 Issue 4, p552
Improvement of the nuclear fuel exploitation has been one of the main objectives of reactor technology during the last decades. Today, in view of a sustainable nuclear energy production, development of advanced reactors re-proposes the choice of innovative fuel cycle concepts, in a context of...
- Facility for integrated studies of thermophysical characteristics of electrically conducting materials by the method of subsecond resistance heating.
Peletskii, V.; Sizov, V.; Saakyan, A.; Shur, B. // High Temperature; Jun2010, Vol. 48 Issue 3, p441
An experimental facility for the investigation of temperature dependence of the thermophysical properties of structural materials is described. The enthalpy, heat capacity, electrical resistance, and integral and spectral emissivities are determined under conditions of heating modes with rates...
- Microstructural investigations of XW-42 and M2 tool steels in semi-solid zones via direct partial remelting route.
Omar, M.; Alfan, A.; Syarif, J.; Atkinson, H. // Journal of Materials Science; Dec2011, Vol. 46 Issue 24, p7696
A suitable microstructure for thixoforming consists of spheroidal grains in a liquid matrix. In order to achieve this, some processing routes have been established. In this study, microstructural evolution of XW-42 and AISI M2 steels via direct partial remelting from the as-annealed condition...
- On the derivation of microhardness of amorphous blends of miscible polymers from glass transition temperature values.
Fakirov, S.; Calleja, F. J. Balta; Boyanova, M. // Journal of Materials Science Letters; Jul2003, Vol. 22 Issue 14, p1011
Discusses the derivation of the microhardness of any polymer blend of miscible partners from glass transition temperature, Tg values by simple use of both Gordonï¿½Taylorï¿½s and the hardness (H) equation. Calculation of the H value of an amorphous homo- or copolymer starting only from its...
- A method of reducing the thermal stresses in the lining of the tuyere belt in a nonferrous metallurgy converter.
Slovikovskii, V. V. // Refractories & Industrial Ceramics; May2008, Vol. 49 Issue 3, p216
Research results are given on magnesian box-type components in the tuyere belt of horizontal converters at Ufalei Nickel Corporation. The purpose has been to eliminate the zoning in them by impregnation with nickel or copper mattes to relieve thermal stresses during use. Components impregnated...
- Solid-like rheological response of non-entangled polymers in the molten state.
Mendil, H.; Baroni, P.; Noirez, L. // European Physical Journal E -- Soft Matter; Jan2006, Vol. 19 Issue 1, p77
We show that non-entangled polymers display an elastic-like behaviour at a macroscopic scale (probed at some 0.100 mm thickness) up to at least hundred degrees above the glass transition temperature. This observation, found under non-slippage conditions, both for side-chain liquid crystalline...
- Prediction of the temperature dependence of fracture toughness of 12Crï¿½2Niï¿½Mo refractory steel.
Pokrovskii, V.; Kulishov, S.; Sidyachenko, V.; Ezhov, V.; Zamotaev, V. // Strength of Materials; Jul2009, Vol. 41 Issue 4, p399
We study the influence of temperature and the size of the specimens on the characteristics of static crack resistance of 12Crï¿½2Niï¿½Mo refractory steel. It is shown that, in the temperature range 20ï¿½450ï¿½C, the increase in the thickness of specimens leads to an insignificant...
- Triple crystallization behavior of fractionated ethylene/a-olefin copolymers of different catalyst type.
Tarasova, E.; Poltim�e, T.; Krumme, A.; Lehtinen, A.; Viikna, A. // Journal of Polymer Research; Feb2011, Vol. 18 Issue 2, p207
Non-isothermal crystallization processes in fractions of Ziegler-Natta (ZN) and single site (SS) based ethylene/1-butene and ethylene/1-hexene copolymers have been studied by differential scanning calorimetry (DSC). Fractionation of used copolymers was done according to molar mass (MM) and...
- Model for Cuboid Shape Samples and its Analysis Used for Measurements of Thermophysical Properties of Sandstone.
Boh�c, V.; Vreten�r, V.; Greif, V. // Measurement Science Review; 2011, Vol. 11 Issue 6, p192
A new model for the sample of square cross section with cuboid geometry including the effect of heat loss from the surface of the sample was tested using the theory of sensitivity coefficients. Theoretical calculation of model uncertainty and derived analytical formulas are presented. Results of...
- Specific volumes of the Zr[sub 41.2]Ti[sub 13.8]Cu[sub 12.5]Ni[sub 10.0]Be[sub 22.5] alloy in....
Ohsaka, K.; Chung, S.K. // Applied Physics Letters; 2/10/1997, Vol. 70 Issue 6, p726
Examines the specific volume of metallic alloys in the liquid, gas, crystalline states. Details on the thermophysical properties and phase transition kinetics of metallic alloys; Identification of critical cooling rate for glass formation; Measurement of specific heat, hemispherical total...
- Thermal expansion of Ti-substituted barium hexaferrite.
Hernandez-Gomez, P.; de Francisco, C. // Journal of Applied Physics; 4/1/2000, Vol. 87 Issue 7, p3576
Presents information on a study which measured the thermal expansion of titanium-substituted barium hexaferrite single crystals. Anisotropic behavior of magnetoplumbite hexaferrites.
- Synthesis, Characterization and Thermodynamic Parameters of Poly(3-mesityl-2-oxopropyl methacrylate).
A�ikses, Aslisah; Aksar, Serkan // Turkish Journal of Science & Technology; Dec2009, Vol. 4 Issue 2, p127
Poly(3-mesityl-2-oxopropyl methacrylate)[poly(MOPMA)] was prepared in presence of 1,4-dioxane solution using 2,2'-azobisisobutyronitrile (AIBN) as initiator at 60 ï¿½C. The poly(MOPMA) was characterized by 1H and 13C-NMR, FT-IR, GPC, DSC and TGA techniques. The thermodynamic properties of...
- Microstructure and electrical properties in three-component (Al2O3--TiO2)/polyimide nanocomposite films.
Jun-Wei Zha; Ben-Hui Fan; Zhi-Min Dang; Sheng-Tao Li; Chen, George // Journal of Materials Research; Dec2010, Vol. 25 Issue 12, p2384
Polyimide (PI)-matrix composite films containing inorganic nanoparticles (nano-Al2O3 and nano-TiO2) have been fabricated. A proposed model is used to explain different structures of the (Al2O3--TiO2)/PI (ATP) films synthesized by employing in situ polymerization. Dependences of dielectric...
- Molecular Dynamics Study of Thermal Properties of Intermetallic Alloys.
Kart, H. H.; Tomak, M.; �agin, T. // Turkish Journal of Physics; 2006, Vol. 30 Issue 4, p311
Molecular dynamics simulations of bulk copper, gold pure metals and their ordered intermetallics alloys of Cu3Au(L12) and CuAu3(L12) have been carried out between above 0 K and below the their melting points of the materials for predicting their temperature-dependent thermophysical properties....
- Bond Strength-Coordination Number Fluctuation Model of Viscosity: An Alternative Model for the Vogel-Fulcher-Tammann Equation and an Application to Bulk Metallic Glass Forming Liquids.
Ikeda, Masahiro; Aniya, Masaru // Materials (1996-1944); Dec2010, Vol. 3 Issue 12, p5246
The Vogel-Fulcher-Tammann (VFT) equation has been used extensively in the analysis of the experimental data of temperature dependence of the viscosity or of the relaxation time in various types of supercooled liquids including metallic glass forming materials. In this article, it is shown that...
- THERMOANALYTICAL PROBES FOR THE ANALYSIS OF PHYSICAL PROPERTIES OF STRATUM CORNEUM.
Miller, David L.; Wildnauer, Richard H. // Journal of Investigative Dermatology; Sep77, Vol. 69 Issue 3, p287
Thermomechanical analysis (TMA) measurements were used to characterize the physical properties of normal and treated stratum corneum. TMA measures changes in the overall mechanical and dimensional properties of the material as a result of temperature-induced transformations such as lipid...
- Thermophysical properties of Si, Ge, and Siï¿½Ge alloy melts measured under microgravity.
Chathoth, S. M.; Damaschke, B.; Samwer, K.; Schneider, S. // Applied Physics Letters; 8/18/2008, Vol. 93 Issue 7, p071902
We have investigated density, thermal expansion, and surface tension of Si, Ge, and Siï¿½Ge alloys in the melt and undercooled state under microgravity conditions. The experiments were conducted in the TEMPUS facility on board a Zero-G aircraft. The density of the liquid alloys as a function...
- Thermal properties of La[sub 0.5]Sr[sub 0.5]Co[sub 1-x]Ni[sub x]O[sub 3-d] ceramics using photopyroelectric technique.
Sebastian, M. T.; Preethy Menon, C.; Philip, J.; Schwartz, R. W. // Journal of Applied Physics; 9/1/2003, Vol. 94 Issue 5, p3206
La[sub 0.5]Sr[sub 0.5]Co[sub 1-x]Ni[sub x]O[sub 3-d] (0=x=0.6) ceramics were prepared using a conventional solid-state ceramic route. The thermal propertiesï¿½thermal conductivity and heat capacityï¿½of these ceramics were measured by the photopyroelectric technique. The thermal...
- Thermal relaxation phenomena across the metal/window interface and its significance to shock temperature measurements of metals.
Tang, Wenhui; Jing, Fuqian; Zhang, Ruoqi; Hu, Jinbiao // Journal of Applied Physics; 9/15/1996, Vol. 80 Issue 6, p3248
Discusses the difficulties in connection with the radiometry measurement of shock temperatures for metals, due to our insufficient knowledge of the high-pressure thermophysical properties of materials. Information on shock temperature measurement; Schematic of experimental setup used for...
- Thermophysical properties of liquid and supercooled ruthenium measured by noncontact methods.
Paradis, P. -F.; Ishikawa, T.; Yoda, S. // Journal of Materials Research; Feb2004, Vol. 19 Issue 2, p590
Several thermophysical properties of liquid and supercooled ruthenium were measured using electrostatic levitation. Over the 2225-2775 K temperature interval, the density can be expressed as ?(T) = 10.75 x 10ï¿½ - 0.56(T - Tm)(kg ï¿½ m-3 with Tm = 2607 K. In addition, the surface tension...
- New waterborne acrylic binders for zero VOC paints.
Geurts, J.; Bouman, J.; Overbeek, A. // Journal of Coatings Technology & Research; Mar2008, Vol. 5 Issue 1, p57
The development of a waterborne acrylic binder that can be formulated into zero VOC paints requires the tuning of film formation under difficult conditions, hardness, and flexibility properties. To meet these requirements, a model of the 'ideal' film was developed and polymers were synthezised...
- The metrological platform of LNE for measuring thermophysical properties of materials.
HAY, BRUNO; HAMEURY, JACQUES; FILTZ, JEAN-R�MY; HALOUA, FR�D�RIQUE; MORICE, RONAN // High Temperatures -- High Pressures; 2010, Vol. 39 Issue 3, p181
As National Metrology Institute (NMI), LNE has been developing for many years comprehensive and high accurate facilities (a number being unique within France) for measuring the main thermophysical properties of materials (thermal diffusivity, thermal conductivity, specific heat, gross calorific...
- Thermophysical properties of the lanthanide sesquisulfides. IV. Schottky contributions, magnetic, and electronic properties of e-phase Yb2S3 and Lu2S3.
Gruber, John B.; Shaviv, Roey; Westrum, Edgar F.; Burriel, Ram�n; Beaudry, Bernard J.; Palmer, Paul E. // Journal of Chemical Physics; 1/15/1993, Vol. 98 Issue 2, p1458
The heat capacities of e-phase Yb2S3 and Lu2S3 have been determined from 6 to 350 K and their thermodynamic properties evaluated. The resolution of the Schottky and magnetic properties by evaluation of the lattice heat capacity is shown to be in accord with spectroscopically determined energy...
- Computer simulation of vaporï¿½liquid equilibria of linear quadrupolar fluids. Departures from the principle of corresponding states.
Garz�n, Benito; Lago, Santiago; Vega, Carlos; Miguel, Enrique de; Rull, Luis F. // Journal of Chemical Physics; 9/1/1994, Vol. 101 Issue 5, p4166
Vaporï¿½liquid equilibria of different quadrupolar linear Kihara fluids have been studied, by using the Gibbs ensemble Monte Carlo technique. Coexistence curves for fluids with elongations L*=L/s=0.3, 0.6, and 0.8 and different quadrupoles are given. We analyze the effect of quadrupole moment...
- Scenario-based touching: on the influence of top-down processes on tactile and visual appreciation.
Jakesch, Martina; Zachhuber, Martina; Leder, Helmut; Spingler, Mark; Carbon, Claus-Christian // Research in Engineering Design; Jul2011, Vol. 22 Issue 3, p143
The aim was to propose a testing procedure that allows measuring ecological valid judgments as a tool for selecting e.g. surface materials in the design process. Precise measures are essential for evaluation processes for example in design research and applied studies. Contextual effects in form...