Download or read book Metal Chemical Reactions with Metals Antimony to Barium written by Ernst Koch and published by Springer. This book was released on 1991-09-15 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume completes the description of the interactions and chemical reactions of elemental tungsten with metallic elements, treating its reactions with antimony, bismuth, and the alkali and alkaline earth metals. The reactions of tungsten with these elements are in most cases confined to surface regions. Corrosion of tungsten and mutual solubility are usually very low. An exception is the W - Be system, in which several intermetallic phases are formed. The surface processes in some of the other systems covered in the present volume evoked considerable scientific and practical interest, documented by the large number of publications. This holds particularly for the Cs-on-W and Ba-on-W surface systems. Cs- and Ba-activated tungsten electrodes were and are used in many technical and laboratory appliances. One example is the Cs diode device for thermionic energy conversion. Surface ionization of Cs and W is widely applied in ion sources and for some time attracted great attention with respect to its potential use in ion rocket propulsion engines. Cs-on-W is also a logical system for basic research on chemisorption due to the propitious chemical, crystallographic, and atomic properties of adsorbent and adsorbate. The majority of existing models for the chemisorption bond has been experimentally checked on this system. The particular interest in the W - Cs and W - Ba systems is reflected in the large portion of the text (256 pages) devoted to these systems.
Download or read book Metal Chemical Reactions with Metals Antimony to Barium written by Erich Best and published by . This book was released on 1991 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tungsten written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gmelin handbook of inorganic and organometallic chemistry written by and published by . This book was released on 1991 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gmelin Handbuch Der Anorganischen Chemie written by Leopold Gmelin and published by . This book was released on 1991 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gmelin Handbook of Inorganic and Organometallic Chemistry written by and published by . This book was released on 1991 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gmelin Handbuch der anorganischen Chemie written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gmelin Handbook of Inorganic and Organometallic Chemistry System Number 54 W Tungsten Supplement Volume A 6a written by E. Best and published by . This book was released on 1991 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gmelin handbook of inorganic and organometallic chemistry written by Ernst Koch and published by . This book was released on 1991 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tungsten written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book W Tungsten written by Gerhard Czack and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume describes physical properties of tungsten metal and covers specifically surface properties, electron emission, and field evaporation. Tungsten surfaces are probably the most extensively studied metal surfaces. Recently, experimentalists and theorists have focussed their interest on the atomic structure, lattice dynamics, and electronic properties of the W(100) surface. While the structure of the reconstructed low-temperature surface is well established, there are still unresolved problems concerning the structure at and above room temperature, the nature of the phase transition, and the driving force for the reconstruction. There are numerous and partly conflicting data on the surface energy, the self-diffusion parameters, and the work function of single-crystal and polycrystal tungsten surfaces. Electron emission, which is of fundamental importance for many applications, comprises thermionic, field, photofield, and photoelectric emission as well as emission induced by impinging electrons, atoms, or ions. Pioneering work in areas like thermionic or field emission is comprehensively discussed. Very recent studies of valence-band and core-level spectra moreover provide detailed information on intrinsic surface properties.
Download or read book Chromatography Chemistry in Nonaqueous Solutions written by Zdenek Kolarik and published by Springer. This book was released on 1991-11-12 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume covers two aspects of thorium solution chemistry: chromatographic methods and the chemistry in nonaqueous solutions. Chromatographic methods find broad application in the analytical chemistry of thorium, notably in the field of radiochemistry where unweighable or trace amounts of thorium have to be determined. Electrolytic methods like migration are used to separate ions to study the complexing behaviour of thorium in solution. Accordingly, these methods have been adopted as standard procedures in radioanalytical laboratories from mining in- dustry to reprocessing plants and research laboratories. They have the advantage that only trace amounts are needed to obtain results, so that radiation shielding and health considerations are less important. The behaviour of Th4+ in aqueous solution at pH > 3 is dominated by hydrolysis. Studies in nonaqueous solutions avoid this complication. The complexing behaviour towards donor ligands and the isolation of compounds like ThX2.2L is a feature of this type of chemistry. Most organometallic compounds can be obtained only in nonaqueous solutions. Furthermore, the amount of thorium extracted from aqueous solution into organic solutions depends strongly on the behaviour of the Th4+ ion and its complexes in the organic phase. Therefore, the studies of the reactions of thorium ions in organic solutions are of some importance for several industrial processes, such as the recovery of thorium from mining solutions by extraction with tributyl phosphate (TBP) to form Th(NO3)4.2 TBP.
Download or read book Metal Chemical Reactions with Metals Antimony to Barium written by Ernst Koch and published by Springer. This book was released on 1991-09-15 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume completes the description of the interactions and chemical reactions of elemental tungsten with metallic elements, treating its reactions with antimony, bismuth, and the alkali and alkaline earth metals. The reactions of tungsten with these elements are in most cases confined to surface regions. Corrosion of tungsten and mutual solubility are usually very low. An exception is the W - Be system, in which several intermetallic phases are formed. The surface processes in some of the other systems covered in the present volume evoked considerable scientific and practical interest, documented by the large number of publications. This holds particularly for the Cs-on-W and Ba-on-W surface systems. Cs- and Ba-activated tungsten electrodes were and are used in many technical and laboratory appliances. One example is the Cs diode device for thermionic energy conversion. Surface ionization of Cs and W is widely applied in ion sources and for some time attracted great attention with respect to its potential use in ion rocket propulsion engines. Cs-on-W is also a logical system for basic research on chemisorption due to the propitious chemical, crystallographic, and atomic properties of adsorbent and adsorbate. The majority of existing models for the chemisorption bond has been experimentally checked on this system. The particular interest in the W - Cs and W - Ba systems is reflected in the large portion of the text (256 pages) devoted to these systems.
Download or read book Metal Chemical Reactions with Metals Antimony to Barium written by Ernst Koch and published by Springer. This book was released on 1991-09-15 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume completes the description of the interactions and chemical reactions of elemental tungsten with metallic elements, treating its reactions with antimony, bismuth, and the alkali and alkaline earth metals. The reactions of tungsten with these elements are in most cases confined to surface regions. Corrosion of tungsten and mutual solubility are usually very low. An exception is the W - Be system, in which several intermetallic phases are formed. The surface processes in some of the other systems covered in the present volume evoked considerable scientific and practical interest, documented by the large number of publications. This holds particularly for the Cs-on-W and Ba-on-W surface systems. Cs- and Ba-activated tungsten electrodes were and are used in many technical and laboratory appliances. One example is the Cs diode device for thermionic energy conversion. Surface ionization of Cs and W is widely applied in ion sources and for some time attracted great attention with respect to its potential use in ion rocket propulsion engines. Cs-on-W is also a logical system for basic research on chemisorption due to the propitious chemical, crystallographic, and atomic properties of adsorbent and adsorbate. The majority of existing models for the chemisorption bond has been experimentally checked on this system. The particular interest in the W - Cs and W - Ba systems is reflected in the large portion of the text (256 pages) devoted to these systems.
Download or read book W Tungsten written by Hermann Jehn and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rare Metal Technology 2022 written by Takanari Ouchi and published by Springer Nature. This book was released on 2022-02-02 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection presents papers from a symposium on extraction of rare metals from primary and secondary materials and residues as well as rare extraction processing techniques used in metal production. Authors cover the extraction of less common or minor metals including elements such as antimony, bismuth, barium, beryllium, boron, calcium, chromium, gallium, germanium, hafnium, indium, manganese, molybdenum, platinum group metals, rare earth metals, rhenium, scandium, selenium, sodium, strontium, tantalum, tellurium, and tungsten. Contributions also discuss rare metals of low-tonnage sales compared to high-tonnage metals (iron, copper, nickel, lead, tin, zinc, or light metals such as aluminum, magnesium, or titanium and electronic metalloid silicon). Authors also cover biometallurgy, hydrometallurgy, and electrometallurgy while novel high-temperature processes such as microwave heating, solar-thermal reaction synthesis, and cold crucible synthesis of rare metals are addressed. Also included in this collection is the design of extraction equipment used in these processes from suppliers as well as laboratory and pilot plant studies.
Download or read book Encyclopedia of Chemical Reactions written by and published by . This book was released on 1946 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
