Quasi-particle Contribution in Thermal Expansion and Thermal Conductivity in Metals
Journal Title: Materials Science: Materials Review - Year 2018, Vol 2, Issue 2
Abstract
In this paper the modified Landau theory of Fermi Liquids was used to compute the thermal expansion and thermal conductivity of quasi-particles in metals. The result revealed that as temperature increases the thermal expansion of quasi-particles in metals increases in all the metals investigated. It is also observed that as the electron density parameter increases the thermal expansion of quasi-particles increases. This shows that at low density region the thermal expansion of quasi-particles is large. The result obtained for the thermal conductivity of quasi-particles in metals revealed that for all the metals computed the thermal conductivity of quasi-particles decreases as temperature increases. This seems to suggest that as temperature increases the separation between quasi-particles increases because they are not heavy particles hence, the rate of absorbing heat decreases. The computed thermal expansion and thermal conductivity of quasi-particles are in better agreement with experimental values. This suggests that the introduction of the electron density parameter is promising in predicting the contribution of quasi-particles to the bulk properties of metals. This study revealed the extent to which quasi-particles contribute to the bulk properties of metals, which assisted their potential applications in materials science and engineering development.
Authors and Affiliations
O. G. Edema, O. M. Osiele, S. I. Otobo, A. O. Akinbolusere
Study on the influence of the springback on the hole expansion ratio characterization
Material formability has become one of the main problems, together with the springback, when stamping high added-value components for the automotive industry. The pursuit of weight reduction has led to higher strength al...
Efficient NO Photodegradation of Hydrothermally Synthesized TiO2 Nanotubes under Visible Light
In this study, TiO2 nanotubes (TNTs) were synthesized via a hydrothermal process and characterized by high-resolution transmission electron microscopy (HR-TEM) images, selected area electron diffraction (SAED) pattern, a...
Study on fl ame retardant ABS
Flame-retardant ABS resin was prepared by adding flame retardant, toughening agent and dispersing silicone oil with acrylonitrile-butadiene-styrene resin (ABS, grade 0215 A) as raw material. The results showed that in th...
The development of polyurethane
Polyurethane is one of the six promising synthetic materials in the world. Due to its excellent product performance and wide application field, it is a crucial industry of development in the world. This paper introduces...
Comparison of the antibacterial activity against Escherichia coli of silver nanoparticle produced by chemical synthesis with biosynthesis
The synthesis of silver nanoparticles (Ag NPs) has been carried out using different methods, mainly by biological and chemical methods; however, comparing antibacterial activity of Ag NPs synthesized by these methods has...