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.
- 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...
- 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.
- 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.
- 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...
- 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.
- 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.
- Extension of the Wuâ€“Jing 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 Wuâ€“Jing 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,...
- 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.
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- Construction of the mass velocity profile for a rarefied molecular gas entrained by a rotating sphere taking into account thermophysical parameters of the gas.
Andreev, A.; Popov, V. // Technical Physics; Dec2009, Vol. 54 Issue 12, p1763
The problem of a sphere rotating in a molecular gas is solved in the isothermal approximation. The expression for the velocity of a rarefied molecular gas entrained by a sphere rotating in it is derived for sliding flow conditions taking into account the second-order correction in the Knudsen...
- An Investigation of the Thermophysical Properties of a Liquid in a Flow Using the Method of Pulse Heating.
Tarzimanov, A. A.; Gabitov, F. R. // High Temperature; Mar/Apr2004, Vol. 42 Issue 2, p231
The theoretical principles are described of measuring the thermophysical properties of a liquid in a flow during a short pulse of heating a quick-response probe. A plane probe and a linear probe are used to measure the thermal activity, thermal conductivity, thermal diffusivity, and kinematic...
- Thermoacoustic Waves Arising under Conditions of Heating a Perfect Viscous Gas.
Zubkov, P. T.; Sviridov, E. M.; Gubaidullin, A. A. // High Temperature; Sep/Oct2004, Vol. 42 Issue 5, p756
We used the control volume approach and a modified SIMPLER algorithm to numerically solve a fully formulated unsteady-state problem on the heating of a perfect gas in a plane confined layer.
- Effects of Interphase Heat Transfer and Surface Tension on Nonlinear Wave Propagation in a Gas-Liquid Mixture.
Oganyan, G. G. // Fluid Dynamics; Sep/Oct2003, Vol. 38 Issue 5, p724
An evolutionary equation with two nonlinearities (basic hydrodynamic and an additional nonlinearity attributable to interphase heat transfer) describing the wave dynamics in a mixture in the presence of viscosity is obtained. For a quasi-adiabatic regime, depending on the heat transfer laws...
- Development of low-melting glasses for decorating facing materials.
Pavlushkina, T. K.; Morozova, I. V. // Glass & Ceramics; Mar2010, Vol. 67 Issue 3/4, p86
The compositions of low-melting glasses based on the sodium-borosilicate system are developed. It effect of the composition on the thermal properties of the glasses is studied. It is shown that the wastes from electrochemical production processes can be used instead of the conventional raw...
- Coatings Keep Things Cool: White Coatings Alleviate Summer Temperature Spikes.
Meyer, Tom; Heinje, Steve // Environmental Design & Construction; Oct2006, Vol. 9 Issue 9, ps18
The article provides information about white coatings that is being used in roofs of buildings in the U.S. White coatings consist of organic or silicone polymer which is blended with pigments and additives to provide protection to roof membranes and to reflect solar radiation. The environmental...
- Making the Case for Cool Roofs: Environmentally Friendly Roofing Takes Off.
Meyer, Tom; Heinje, Steve // Environmental Design & Construction; Oct2006, Vol. 9 Issue 9, ps21
The article provides information about cool roofs in the U.S. The expansion of the program on the use of cool roofs products is being promoted by the Cool Roof Rating Council and the Environmental Protection Agency with its Energy Starï¿½ Reflective Roof Products program. It is said that cool...
- Characterization of thermal diffusivity of micro/nanoscale wires by transient photo-electro-thermal technique.
Wang, T.; Wang, X.; Guo, J.; Luo, Z.; Cen, K. // Applied Physics A: Materials Science & Processing; Jul2007, Vol. 87 Issue 4, p599
In this work, a transient photon-electro-thermal (TPET) technique based on step laser heating and electrical thermal sensing is developed to characterize the thermophysical properties of one-dimensional micro/nanoscale conductive and nonconductive wires. In this method, the to-be-measured thin...
- A novel method for the synthesis of polyamide 6 magnetic microspheres.
Yan Liu; Tingxiu Xie; Guisheng Yang // Journal of Materials Science; Aug2011, Vol. 46 Issue 15, p5050
Polyamide 6 (PA6) magnetic microspheres were firstly prepared via successively in situ polymerization using phase inversion technology of polymer pairs polyamide 6/polystyrene (PA6/PS) at extremely low PS content. The properties of PA6 magnetic microspheres, such as morphologies, diameter size...
- Simpler method for volatile medium pump mechanical seals.
Peng, X. D.; Xie, Y. B.; Gu, Y. Q. // Proceedings of the Institution of Mechanical Engineers -- Part J; Nov2006, Vol. 220 Issue 7, p643
Mechanical face seals operating with volatile media, such as liquid ammonia, hot water, and light hydrocarbons, generally fail as a result of phase state instability of the fluid film between the two faces. Therefore, determining face temperature and identifying phase states and phase state...
- Thermophysical studies of radwaste repository covers.
Veselov, E.; Rybakov, A. // Atomic Energy; Oct2011, Vol. 110 Issue 6, p405
This article is devoted to thermophysical studies of a multifunctional cover consisting of natural and artificial materials of a 2.8 m thick near-surface repository. The objectives were to determine the maximum depth of the frost zone and to evaluate the changes of the thermophysical properties...
- Electrochemical Behavior of Ca-Based Bulk Metallic Glasses.
Morrison, M. L.; Buchanan, R. A.; Senkov, O. N.; Miracle, D. B; Liaw, P. K. // Metallurgical & Materials Transactions. Part A; Apr2006, Vol. 37 Issue 4, p1239
Since 2002, numerous Ca-based bulk metallic glass (BMG) alloys have been discovered. These BMG alloys are of interest because of their low densities and costs; however, few studies have examined the properties of these novel materials. In this study, the thermophysical and electrochemical...
- An Economical Way of Improving Coatings.
Parson, James // Paint & Coatings Industry; Sep2007, Vol. 23 Issue 9, p92
The article describes a process that produces organically modified clays (OMC) particles that are generally on the lower end of the colloidal scale, rending them nearly invisible to the unaided eye while raising the coating's glass transition temperature and other mechanical properties. The test...
- Synthesis of New Bulk Metallic Glassy Ti60Al15Cu10 W10Ni5 Alloy by Hot-Pressing the Mechanically Alloyed Powders at the Supercooled Liquid Region.
El-Eskandarany, M. Sherif; Inoue, A. // Metallurgical & Materials Transactions. Part A; Jul2006, Vol. 37 Issue 7, p2231
The mechanical alloying method has been used to fabricate multicomponent Ti60 Al15Cu10W10Ni5 glassy alloy powders, using a low-energy ball-milling technique. The glassy powders that were obtained after 720 ks of milling have a sphere-like morphology with an average panicle size of 0.38 ï¿½m...
- Influence of External Plasticization on Rheological and Thermal Properties of Cellulose Acetate with Respect to Its Foamability.
Zepnik, Stefan; Kabasci, Stephan; Radusch, Hans-Joachim; Wodke, Thomas // Journal of Materials Science & Engineering A; 2012, Vol. 2 Issue 2, p152
Cellulose acetate needs appropriate plasticization for proper processing and achieving suitable properties. At thermoplastic foam production via melt technologies rheological and thermal properties are key factors for the generation of high quality products. Therefore, the influence of external...
- Gas flow through a porous heat-releasing medium with allowance for the temperature dependence of gas viscosity.
Levin, V. A.; Lutsenko, N. A. // Journal of Engineering Physics & Thermophysics; Jan2006, Vol. 79 Issue 1, p33
The gas flow through a porous heat-releasing medium is considered. It has been noted that account for the temperature dependence of the gas viscosity strongly influences the solution: the gas flow rate markedly decreases and a stronger heating occurs. Analysis of the flow of a gas with a...
- 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.
- Dielectric properties of two-phase and porous ferriferous glasses.
Koroleva, Ekaterina; Burdin, Dmitrii; Antropova, Tatyana; Porechnaya, Nadezda; Naberezhnov, Alexander; Anfimova, Irina; Pschenko, Olga // Optica Applicata; 2012, Vol. 42 Issue 2, p287
In the present contribution we have studied the dielectric properties of two-phase sodium borosilicate glasses doped by iron oxide and of porous media based on them. The temperature dependences of dielectric permittivity and conductivity for all samples have been obtained, and the impedance...
- Investigation of thermal effect on exterior wall surface of building material at urban city area.
Din, Mohd Fadhil Md.; Dzinun, Hazlini; Ponraj, M.; Chelliapan, Shreeshivadasan; Noor, Zainura Zainun; Remaz, Dilshah; Iwao, Kenzo // International Journal of Energy & Environment; 2012, Vol. 3 Issue 4, p531
This paper describes the investigation of heat impact on the vertical surfaces of buildings based on their thermal behavior. The study was performed based on four building materials that is commonly used in Malaysia; brick, concrete, granite and white concrete tiles. The thermal performances on...
- Temperature dependence of the 90Â° coupling in Fe/Al/Fe(001) magnetic trilayers.
Filipkowski, M. E.; Gutierrez, C. J.; Krebs, J. J.; Prinz, G. A. // Journal of Applied Physics; 5/15/1993, Vol. 73 Issue 10, p5963
Presents a study which determined the temperature dependence of the 90Â° coupling in iron/aluminum/iron (001) magnetic trilayers. Analysis of the occurrence of second-order transitions; Numerical calculations; Results and discussion.