solid thermal expansion electron theory.In first-order approximation, the interaction potential function among atoms in solidsmay be expressed aswhere g_α depends on the electron structures of solids; r_α and r_(αo) express the distancesbetweell two atoms in nonequilibrium and equilibrium respec...
ELECTRON THEORY ON THERMAL EXPANSION OF SOLIDS AND ITS APPLICATION TO LIGHT METALSsolid thermal expansion electron theory.In first-order approximation, the interaction potential function among atoms in solidsmay be expressed aswhere gα depends on the electron structures of solids; rα and rαo ...
Timoshenko proposed the analytical formula of curvature29in 1925 for the thermal expansion of bi-material straight beams and this formula has been widely used30. The formula also applies to bi-material circular beams, except that curvature needs to be replaced by curvature increment31. This conclusi...
While Na0.005Mg2.995Sb1.5Bi0.5 sample shows the highest average ZT of ∼0.29 in the temperature range of 300–773 K and matched thermal expansion behavior with the state-of-the-art n-type Mg3.2Sb1.5Bi0.49Te0.01Mn0.01, which is of great significance for practical applications. Taking the ...
We apply the method to determine the fcc-hcp crystalline phase behavior of the classical Lennard-Jones solid.关键词: General statistical methods Monte Carlo methods Thermal properties of liquids: heat capacity thermal expansion etc Solid-solid transitions ...
MaterialTemperature (°C)Young modulus/E (GPa)Poisson's rationνThermal conductivity [W/(m·°C)]Thermal diffusivityμ=λ/ρC (10−6 m2/s)Density (103kg/m3)Coefficient of thermal expansiona (10−6/°C)Yield stress (MPa) Base metal 20 204 0.3 54.6 14.7 7.6 10.9 588 300 185 45.8...
structural transformation in cobalt, are treated as caused by heterophase fluctuations (HF), A model of HF near a weakly first order transition between two solid phases is considered. Within the model, HF-caused contributions to volume compressibility, thermal expansion, specific heat and diffusivity...
Thermal Expansion Kinetics: Method to Measure Permeability of Cementitious Materials: I, Theory When a porous material that is saturated with liquid is heated, the liquid typically expands much more than the solid phase; if the permeability is high, t... GW Scherer - 《Journal of the American...
Auxetic structures are a special class of structural components that exhibit a negative Poisson’s ratio (NPR) because of their constituent materials, internal microstructure, or structural geometry. To realize such structures, specialized manufacturing processes are required to achieve a dimensional accurac...
Our previous research found that the emission color of solid solution compounds (Ca1−xSrx)8Mg3Al2Si7O28:Eu2+ could be tuned from green to blue under the elastic stress, which realized stress-induced ML spectral migration, and supplied new insights into the stress detection28. This kind of...