Download or read book Unconventional Methods for Influencing Fluid Flow Part Vi the Effect of a Transverse Magnetic Field on the Thermoelectric Properties of Polycrystalline Bismuth antimony Alloys written by Henry N. CHUANG and published by . This book was released on 1966 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of a transverse magnetic field on the thermoelectric properties (Seebeck coefficient, thermal conductivity, electrical resistivity and figure of merit) of n-type polycrystals of bismuth-antimony alloys containing 0, 5, 12 and 19 atomic per cent antimony in bismuth have been investigated at 90K and 310K. Pure bismuth has the largest zero field Seebeck coefficient as well as figure of merit of all the samples tested at both 90K ( -57 microvolts/ K and 0.00043/K) and 310K ( -66 microvolts/K and 0.00034/K). The magnetoresistivity of the pure bismuth sample at 90K is extremely large, (7.5 times its zero field value at 4.1 kilogauss); it is believed due mainly to its special band structure (overlapped energy bands) which is one of the characteristics of semimetals. As a result of its extremely large magnetoresistivity, the figure of merit decreases with field at fields larger than a few hundred gauss. The zero field figure of merit of Bi95Sb5 at 310K is just slightly smaller than pure bismuth's (0.0003/K vs 0.00034/K) but its relative change is much larger so that its figure of merit overtakes pure bismuth's at a field of 4 kilogauss. The figure of merit of Bi88Sb12 under the presence of a magnetic field is very promising. It reached a value of about 0.0004/K at 4.1 kilogauss. The performance of Bi81Sb19 both at 310K and 90K, with and without a magnetic field, was very disappointing. (Author).
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1966 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1966-10-10 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermophysical Properties Research Literature Retrieval Guide Alloys intermetallic compounds and cermets written by Purdue University. Thermophysical Properties Research Center and published by . This book was released on 1973 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Volume 1 Elements and Inorganic Compounds written by Y. S. Touloukian and published by Springer. This book was released on 1973-01-09 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: The phenomenal growth of science and technology As a complementary effort to its Data Tables has brought about a universal appreciation of the fact Series, TPRC published in 1967 a work entitled that present limitations in many technical develop "Thermo physical Properties Research Literature Re ments are often a direct result of the paucity of knowl trieval Guide. " This three-book work reported 33,700 edge on material properties. Engineering develop references on seven thermophysical property groups ments in the years ahead will be closely linked to the and about 45,000 materials. This Basic Edition sys research that is done today to contribute to a better tematically covered the world's unclassified literature understanding of the properties of matter, of which published essentially between 1920 and mid-1964, in thermophysical properties constitute a major segment. many instances going much earlier. While research on the properties of materials con The present work, referred to as Supplement I to tinues, adequate steps are not being taken to ensure the Basic Edition, reports an additional 26,000 refer that this invaluable body of information be coordi ences on sixteen thermophysical properties of 20,000 nated, synthesized, organized, and disseminated to materials, covering the years from mid-1964 to 1971. the ultimate user, namely, the individual scientist and An additional 9,000 synonyms and trade names are engineer. cross-referenced to assist the user in identifying the material or substance of interest.
Download or read book Thermophysical Properties Research Literature Retrieval Guide 1900 1980 written by J. F. Chaney and published by Springer. This book was released on 1982 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1966 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1966 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Thermoelectricity written by H. Julian Goldsmid and published by Springer Science & Business Media. This book was released on 2009-10-03 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Thermoelectricity is the latest work by Professor Julian Goldsmid drawing on his 55 years experience in the field. The theory of the thermoelectric and related phenomena is presented in sufficient detail to enable researchers to understand their observations and develop improved thermoelectric materials. The methods for the selection of materials and their improvement are discussed. Thermoelectric materials for use in refrigeration and electrical generation are reviewed. Experimental techniques for the measurement of properties and for the production of thermoelements are described. Special emphasis is placed on nanotechnology which promises to yield great improvements in the efficiency of thermoelectric devices. Chapters are also devoted to transverse thermoelectric effects and thermionic energy conversion, both techniques offering the promise of important applications in the future.
Download or read book The Physics of Thermoelectric Energy Conversion written by Julian Goldsmid and published by Morgan & Claypool Publishers. This book was released on 2017-05-02 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book outlines the principles of thermoelectric generation and refrigeration from the discovery of the Seebeck and Peltier effects in the nineteenth century through the introduction of semiconductor thermoelements in the mid-twentieth century to the more recent development of nanostructured materials. It is shown that the efficiency of a thermoelectric generator and the coefficient of performance of a thermoelectric refrigerator can be related to a quantity known as the figure of merit. The figure of merit depends on the Seebeck coefficient and the ratio of the electrical to thermal conductivity. It is shown that expressions for these parameters can be derived from the band theory of solids. The conditions for favourable electronic properties are discussed. The methods for selecting materials with a low lattice thermal conductivity are outlined and the ways in which the scattering of phonons can be enhanced are described. The application of these principles is demonstrated for specific materials including the bismuth telluride alloys, bismuth antimony, alloys based on lead telluride, silicon-germanium and materials described as phonon-glass electron-crystals. It is shown that there can be advantages in using the less familiar transverse thermoelectric effects and the transverse thermomagnetic effects. Finally, practical aspects of thermoelectric generation and refrigeration are discussed. The book is aimed at readers who do not have a specialised knowledge of solid state physics.
Download or read book Properties of Materials written by Robert E. Newnham and published by Oxford University Press. This book was released on 2005 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crystals are sometimes called 'Flowers of the Mineral Kingdom'. In addition to their great beauty, crystals and other textured materials are enormously useful in electronics, optics, acoustics and many other engineering applications. This richly illustrated text describes the underlying principles of crystal physics and chemistry, covering a wide range of topics and illustrating numerous applications in many fields of engineering using the most important materials today. Tensors, matrices, symmetry and structure-property relationships form the main subjects of the book. While tensors and matrices provide the mathematical framework for understanding anisotropy, on which the physical and chemical properties of crystals and textured materials often depend, atomistic arguments are also needed to quantify the property coefficients in various directions. The atomistic arguments are partly based on symmetry and partly on the basic physics and chemistry of materials. After introducing the point groups appropriate for single crystals, textured materials and ordered magnetic structures, the directional properties of many different materials are described: linear and nonlinear elasticity, piezoelectricity and electrostriction, magnetic phenomena, diffusion and other transport properties, and both primary and secondary ferroic behavior. With crystal optics (its roots in classical mineralogy) having become an important component of the information age, nonlinear optics is described along with the piexo-optics, magneto-optics, and analogous linear and nonlinear acoustic wave phenomena. Enantiomorphism, optical activity, and chemical anisotropy are discussed in the final chapters of the book.
Download or read book Organic Thermoelectric Materials written by Zhiqun Lin and published by Royal Society of Chemistry. This book was released on 2019-10-18 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarises the significant progress made in organic thermoelectric materials, focusing on effective routes to minimize thermal conductivity and maximize power factor.
Download or read book Mechanical Properties of Ceramics written by John B. Wachtman and published by John Wiley & Sons. This book was released on 2009-08-13 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Comprehensive and Self-Contained Treatment of the Theory and Practical Applications of Ceramic Materials When failure occurs in ceramic materials, it is often catastrophic, instantaneous, and total. Now in its Second Edition, this important book arms readers with a thorough and accurate understanding of the causes of these failures and how to design ceramics for failure avoidance. It systematically covers: Stress and strain Types of mechanical behavior Strength of defect-free solids Linear elastic fracture mechanics Measurements of elasticity, strength, and fracture toughness Subcritical crack propagation Toughening mechanisms in ceramics Effects of microstructure on toughness and strength Cyclic fatigue of ceramics Thermal stress and thermal shock in ceramics Fractography Dislocation and plastic deformation in ceramics Creep and superplasticity of ceramics Creep rupture at high temperatures and safe life design Hardness and wear And more While maintaining the first edition's reputation for being an indispensable professional resource, this new edition has been updated with sketches, explanations, figures, tables, summaries, and problem sets to make it more student-friendly as a textbook in undergraduate and graduate courses on the mechanical properties of ceramics.
Download or read book Nanoscale Thermoelectrics written by Xiaodong Wang and published by Springer Science & Business Media. This book was released on 2013-11-18 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the efficient utilization of energy resources and the minimization of environmental damage, thermoelectric materials can play an important role by converting waste heat into electricity directly. Nanostructured thermoelectric materials have received much attention recently due to the potential for enhanced properties associated with size effects and quantum confinement. Nanoscale Thermoelectrics describes the theory underlying these phenomena, as well as various thermoelectric materials and nanostructures such as carbon nanotubes, SiGe nanowires, and graphene nanoribbons. Chapters written by leading scientists throughout the world are intended to create a fundamental bridge between thermoelectrics and nanotechnology, and to stimulate readers' interest in developing new types of thermoelectric materials and devices for power generation and other applications. Nanoscale Thermoelectrics is both a comprehensive introduction to the field and a guide to further research, and can be recommended for Physics, Electrical Engineering, and Materials Science departments.
Download or read book Thermoelectricity Abstracts written by and published by . This book was released on 1960 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermoelectric Skutterudites written by Ctirad Uher and published by CRC Press. This book was released on 2021-05-18 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: • Gives a comprehensive account of all fundamental physical properties of skutterudites. • Each major topic is accompanied by introductory sections and further detailed theoretical treatment is provided in Appendices. • Supported by many figures and a vast number of relevant references.
