XI. The exact measurement of the specific heat and other physical properties of solid substances at high temperatures: The specific heat, electrical resistance, thermoelectrical behaviour and thermal expansion of electrolytic iron

1938 ◽  
Vol 57 (12) ◽  
pp. 1313-1340 ◽  
Author(s):  
F. M. Jaeger ◽  
E. Rosenbohm ◽  
A. J. Zuithoff
Keyword(s):  
Thermal Expansion ◽  
Physical Properties ◽  
Specific Heat ◽  
High Temperatures ◽  
Electrical Resistance ◽  
Electrolytic Iron ◽  
Exact Measurement

scholarly journals Dense Si3N4 and SiC: Some Critical Properties for Gas Turbine Application

1972 ◽  
Author(s):  
F. F. Lange
Keyword(s):  
Thermal Conductivity ◽  
Thermal Expansion ◽  
Physical Properties ◽  
Specific Heat ◽  
Gas Turbine ◽  
High Temperatures ◽  
Thermal Stresses ◽  
Poisson's Ratio ◽  
Critical Properties ◽  
Property Data

Both Si3N4 and SiC in their dense forms are leading candidate ceramics for gas turbine components because of their unique physical properties that minimize the thermal stresses which develop during gas turbine operation and their ability to resist oxidation at high temperatures. The purpose of this paper is to present current property data for both materials that are required to calculate thermal stresses, i.e., strength, Young’s modulus, Poisson’s ratio, thermal expansion, thermal conductivity, and specific heat.

Specific Heat and Thermal Expansion at High Temperatures of Si and Ge

1987 ◽  
Vol 142 (1) ◽  
pp. K13-K17 ◽  
Author(s):  
H. Matsuokagaya ◽  
N. Shoji ◽  
T. Soma
Keyword(s):  
Thermal Expansion ◽  
Specific Heat ◽  
High Temperatures

Thermal Expansion and Specific Heat of Tungsten Oxide at High Temperatures

1951 ◽  
Vol 84 (5) ◽  
pp. 1054-1055 ◽  
Author(s):  
Shozo Sawada ◽  
Rinjiro Ando ◽  
Shoichiro Nomura
Keyword(s):  
Thermal Expansion ◽  
Specific Heat ◽  
Tungsten Oxide ◽  
High Temperatures

Study on Thermal Physical Properties of Al-Si8-Cu2-Mg Alloy

2016 ◽  
Vol 877 ◽  
pp. 62-66
Author(s):  
Liang Gao ◽  
Ping He ◽  
Gang Yin Guo ◽  
Zheng Bo Xiang ◽  
Fei Liu
Keyword(s):  
Heat Capacity ◽  
Thermal Expansion ◽  
Physical Properties ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Coefficient Of Thermal Expansion ◽  
Mg Alloy ◽  
Heat Of Fusion ◽  
Capacity Coefficient ◽  
Thermal Physical Properties

Parts of thermal physical properties of Al-Si8-Cu2-Mg alloy were studied. The curves were plotted showing the relationship between density, specific heat capacity, coefficient of thermal expansion and the variation of temperature for the first time with this alloy. The results show that the density was decreased when the temperature was raised, but the specific heat capacity and the coefficient of thermal expansion were first increased and then decreased. The solidus-liquidus temperatures, latent heat of fusion were studied, and the results show that the melting temperature range of this alloy was 507-596°C.

I. On a relation between the coefficient of the Thomson effect and certain other physical properties of metals

1884 ◽  
Vol 37 (232-234) ◽  
pp. 25-28 ◽  
Keyword(s):  
Physical Properties ◽  
Specific Heat ◽  
Electrical Resistance ◽  
Specific Resistance ◽  
Close Relation ◽  
Specific Electrical Resistance ◽  
Definite Function ◽  
Thomson Effect ◽  
Physical Constants ◽  
Thomson Coefficient

The magnitude and direction of the Thomson effect depend upon a coefficient which is always the same for the same metal, but varies with different metals. Professor Everett, in his “Units and Physical Constants,” p. 151, gives a table based upon Tait’s thermoelectric diagram (“Trans. R. S. E.,” vol. xxvii, p. 125), in which the thermoelectric values of a number of metals, referred to lead as zero, are given in the form α + βt ,where β is a number which for a given metal is proportional to the tangent of the inclination of the line representing the metal in Tait’s diagram, and therefore to the coefficient of the Thomson effect. Since all the physical properties of a metal are to some extent affected by h.eat, it seemed probable that a connexion might be found to exist between certain of these properties and the Thomson effect. A short examination showed that, as a rule, the coefficient of the Thomson effect is positive in those metals which have a great specific electrical resistance and specific heat, and negative in those which are distinguished by a great coefficient of expansion. I therefore made several attempts to ascertain whether the Thomson coefficient might not be some definite function of the specific resistance, specific heat, and coefficient of expansion; and though I have not been perfectly successful, it appears from the subjoined table that there is a close relation between them.

Thermo-physical properties of a new UV nonlinear optical crystal: NaSr3Be3B3O9F4

2018 ◽  
Vol 51 (2) ◽  
pp. 357-360 ◽  
Author(s):  
Zhi Fang ◽  
Lijuan Liu ◽  
Xiaoyang Wang ◽  
Chuangtian Chen
Keyword(s):  
Thermal Expansion ◽  
Thermal Diffusivity ◽  
Physical Properties ◽  
Specific Heat ◽  
Nonlinear Optical ◽  
Laser Damage Threshold ◽  
Laser Generation ◽  
Nonlinear Optical Crystal ◽  
Optical Crystal ◽  
Thermo Physical Properties

NaSr3Be3B3O9F4(NSBBF) as a new UV nonlinear optical crystal has aroused great interest in recent years. This study investigates the thermo-physical properties of NSBBF, including thermal expansion, thermal diffusivity, thermal conductivity and specific heat, which are important parameters for applications. The specific heat of NSBBF is comparable to that of CsLiB6O10(CLBO) and larger than that of β-BaB2O4(β-BBO), indicating that NSBBF has a very high laser damage threshold. The thermal expansion coefficients of NSBBF are determined as αa= 1.05 × 10−5 K−1and αc= 1.34 × 10−5 K−1, exhibiting much smaller anisotropy than those of CLBO and β-BBO. The thermal diffusivity and conductivity of NSBBF are also obtained in the temperature region from 323 to 573 K, showing comparable anisotropies to β-BBO. All these results show that NSBBF is suitable for high-power UV laser generation.

Thermo-physical properties of nonlinear optical crystal K3B6O10Br

2016 ◽  
Vol 49 (2) ◽  
pp. 539-543 ◽  
Author(s):  
Mingjun Xia ◽  
Bo Xu ◽  
Lijuan Liu ◽  
Xiaoyang Wang ◽  
Rukang Li ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Physical Properties ◽  
Specific Heat ◽  
Nonlinear Optical ◽  
Coefficient Of Thermal Expansion ◽  
Second Harmonic ◽  
Damage Threshold ◽  
Thermal Expansion Coefficients ◽  
Lower Temperature ◽  
Thermo Physical Properties

The thermo-physical properties of the nonlinear optical (NLO) crystal K3B6O10Br (KBB) were experimentally investigated, including specific heat, thermal conductivity, coefficient of thermal expansion and refractive index. The specific heat of KBB is lower than that of LiB3O5 and higher than that of other borate NLO crystals, such as β-BaB2O4, CsLiB6O10 and CsB3O5, and KBB manifests a high damage threshold because of its lower temperature gradient during laser pulse irradiation. The thermal expansion coefficients were obtained as α x = 5.09 × 10−6 K−1 and α z = 2.39 × 10−5 K−1, showing weaker anisotropy than those of commonly used NLO crystals. The temperature-dependent Sellmeier dispersion equations of the refractive indices were also obtained, and the phase-matching angles for second harmonic generation (SHG) at temperatures of 313, 343, 373, 403 and 433 K which were calculated from these equations are in good agreement with the experimental values. All results are indicative of the KBB crystal as a novel promising NLO crystal for high power SHG.

scholarly journals The Thermal Expansion of Solids

1959 ◽  
Vol 12 (3) ◽  
pp. 237 ◽  
Author(s):  
GC Fletcher
Keyword(s):  
Thermal Expansion ◽  
Sodium Chloride ◽  
Equation Of State ◽  
Specific Heat ◽  
High Temperatures ◽  
Isothermal Compressibility ◽  
Constant Volume ◽  
Normal Vibrations ◽  
Ionic Solid ◽  
Theory And Experiment

From the theory of normal vibrations of a lattice, a practical means of obtaining the equation of state of an ionic solid is developed from which the thermal expansion can be derived. Using previous work by Kellermann, application is made to the case of sodium chloride and the results compared with experiment. Possible reasons for the discrepancy between theory and experiment, which is very large at 'high temperatures, are discussed. The variation with temperature of the specific heat at constant volume and the isothermal compressibility are also investigated.

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