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Author : Dallas Thane Hurd
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.E/5 ( download)
Download or read book Crystalline Elementary Boron ... written by Dallas Thane Hurd and published by . This book was released on 1943 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Edward Hughes
Publisher :
ISBN 13 :
Total Pages : 256 pages
Book Rating : 4.E/5 ( download)
Download or read book An Investigation of the Structure of Elementary Crystalline Boron written by Robert Edward Hughes and published by . This book was released on 1953 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. L. Hoard
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.3/5 (91 download)
Download or read book Structures of Fluorocarbons, Elementary Boron and Boron Compounds written by J. L. Hoard and published by . This book was released on 1955 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. C. Shaw
Publisher :
ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.3/5 (91 download)
Download or read book Electrical Properties of Crystalline Boron written by W. C. Shaw and published by . This book was released on 1953 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William W. Wellborn
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.3/5 (91 download)
Download or read book Preparation of High Strength Shapes from Crystalline Boron written by William W. Wellborn and published by . This book was released on 1950 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G.V. Samsonov
Publisher : Springer Science & Business Media
ISBN 13 : 3642666205
Total Pages : 666 pages
Book Rating : 4.6/5 (426 download)
Download or read book Boron and Refractory Borides written by G.V. Samsonov and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: V. I. MATKOVICH During the meeting of the International Symposium on Boron held in October, 1972 in Tbilisi, U.S.S.R., the idea was proposed to assemble a review of boron and refractory borides by the specialists present. The advantages of such a work were immediately apparent. Such diverse applications of borides as in protective armor, nuclear reactors, coat ings, reinforcement, etc. can hardly all be presented in sufficient detail by a single author. On the other hand it was also recognized that with so much specialization, some areas of interest may not be covered. Within the last decade or two a number of areas have been developed in which the use of refractory borides is growing and improvements are being actively explored. Thus, a number of borides have considerable potential as reinforcing material for plastics or light metals, though only boron fibers have been firmly established up to the present. Ap plication of flakes and films for two-dimensional reinforcement appears attractive, although the high cost of materials and development repre sents a considerable barrier. A number of borides have been used to manufacture lightweight protec tive armor. In this area relatively fast changes seem to be taking place as improvements in performance and weight are made. Boron carbide has found considerable use in this application and new developments exploit the light weight of beryllium borides.
Author : Jack Arnold Kohn
Publisher : Springer
ISBN 13 : 1489965726
Total Pages : 201 pages
Book Rating : 4.4/5 (899 download)
Download or read book Boron Synthesis, Structure, and Properties written by Jack Arnold Kohn and published by Springer. This book was released on 2013-12-01 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Allan Zalkin
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Crystal Structures of CeB4, ThB4, and UB4 written by Allan Zalkin and published by . This book was released on 1950 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The compounds CeB4, ThB4, and UB4 have been shown to crystallize in a new structure, which has been worked out from x-ray diffraction patterns. This structure is designated as the "ThB4-type structure," since that was the compound first observed. These borides were prepared by D.L. Sawyer and L. Brewer of the Lawrence Radiation Laboratory, who heated the metals and boron together in vacuum at about 1500© C. Powder diffraction patterns were obtained of the three compounds. Rotation and Weissenberg patterns were obtained for 110 and 001 axes of a small single crystal of ThB4. The patterns were indexed on tetragonal lattices.
Author : W. C. Shaw
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.3/5 (91 download)
Download or read book Electrical Properties of Crystalline Boron written by W. C. Shaw and published by . This book was released on 1953 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wei Gao
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (642 download)
Download or read book Crystal Growth of Alpha-rhombohedral Boron written by Wei Gao and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pure boron exists in two main polymorphs, the common [Beta]-rhombohedral boron and the relatively rare [Alpha]-rhombohedral boron. [Alpha]-rhombohedral boron ([Alpha]-B) possesses several extraordinary properties: self-healing from radiation damage and a high hole mobility. In addition, the [superscript]10B isotope has a large thermal neutron capture cross section. Such properties make it an excellent candidate for novel electronic device, such as direct energy conversion devices (alphacells and betacells) and neutron detectors. However, research on the properties and applications of [Alpha]-B has been limited due to the difficulty to produce high quality [Alpha]-B crystals of significant size. The preparation of [Alpha]-rhombohedral boron is challenging for several reasons: first, [Alpha]-rhombohedral boron has a low thermodynamic stability; it is only stable below 1100°C, at higher temperature [Beta]-rhombohedral boron is the stable polymorph. In addition, at elevated temperatures, boron is highly reactive, which make it is difficult to produce pure boron crystals. The primary goal of this research was to produce high quality [Alpha]-B crystals of significant size. The main focus of this study was to explore the feasibility of producing [Alpha]-B from a copper flux. Copper is a promising solvent for [Alpha]-B crystal growth: the eutectic temperature of copper-boron is low, 996°C, and the phase diagram of copper-boron is relatively simple, and there are not many intermediate boride-copper compounds. In addition, copper is easily removed from crystals by etching with concentrated nitric acid. Last but not least, copper is less expensive than other metal solvents such as platinum. Boron crystal growth from a platinum solvent and vapor-liquid-solid growth by chemical vapor deposition were also performed for comparison. A series of crystals were grown over a range of initial boron concentrations (9.9 to 27.7 mole %) and cooling rates. Small irregular-shaped black crystals (>100[Mu]m) and well-faceted red crystals in various shapes, as large as 500 microns were produced. The crystals were characterized by optical microscopy, scanning electron microscopy, energy dispersive spectroscopy, x-ray diffraction analysis, and Raman spectroscopy. The correlation between experiment results and experimental parameters (source materials, the purity of growth atmosphere, and crucible materials, etc.) are reported. Suggestions about further investigation for [Alpha]-B crystal growth are proposed.
Author : Lawrence M. Anovitz
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 1501509225
Total Pages : 884 pages
Book Rating : 4.5/5 (15 download)
Download or read book Boron written by Lawrence M. Anovitz and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 33 of Reviews in Mineralogy reviews the Mineralogy, Petrology, and Geochemistry of Boron. Contents: Mineralogy, Petrology and Geochemistry of Boron: An Introduction The Crystal Chemistry of Boron Experimental Studies on Borosilicates and Selected Borates Thermochemistry of Borosilicate Melts and Glasses - from Pyrex to Pegmatites Thermodynamics of Boron Minerals: Summary of Structural, Volumetric and Thermochemical Data Continental Borate Deposits of Cenozoic Age Boron in Granitic Rocks and Their Contact Aureoles Experimental Studies of Boron in Granitic Melts Borosilicates (Exclusive of Tourmaline) and Boron in Rock-forming Minerals in Metamorphic Environments Metamorphic Tourmaline and Its Petrologic Applications Tourmaline Associations with Hydrothermal Ore Deposits Geochemistry of Boron and Its Implications for Crustal and Mantle Processes Boron Isotope Geochemistry: An Overview Similarities and Contrasts in Lunar and Terrestrial Boron Geochemistry Electron Probe Microanalysis of Geologic Materials for Boron Analyses of Geological Materials for Boron by Secondary Ion Mass Spectrometry Nuclear Methods for Analysis of Boron in Minerals Parallel Electron Energy-loss Spectroscopy of Boron in Minerals Instrumental Techniques for Boron Isotope Analysis
Author : Dean Nesbit Williams
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Properties of Boron written by Dean Nesbit Williams and published by . This book was released on 1960 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : László Erdey
Publisher : Elsevier
ISBN 13 : 1483222594
Total Pages : 312 pages
Book Rating : 4.4/5 (832 download)
Download or read book Gravimetric Analysis written by László Erdey and published by Elsevier. This book was released on 2013-10-22 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gravimetric Analysis, Part III describes the experimental procedures for the gravimetric analysis of various compounds. This book is composed of 13 chapters that also present sample preparation protocols. The first four chapters survey the steps for halogen compound determination. The succeeding chapters provide the procedures for gravimetric determination of cyanide, thiocyanate ions, sulfur, nitrogen, phosphorus, carbon, silicon, and boron. The final chapter considers other aspects of gravimetric experiments, including apparatus cleaning, reagents, and numerical calculation of the result. This book will prove useful to analytical and inorganic chemists, teachers, and students in the allied fields.
Author : Richard Beatty
Publisher : Marshall Cavendish
ISBN 13 : 9780761419211
Total Pages : 36 pages
Book Rating : 4.4/5 (192 download)
Download or read book Boron written by Richard Beatty and published by Marshall Cavendish. This book was released on 2005 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A simple look at this important element.
Author : Nina Orlovskaya
Publisher : Springer Science & Business Media
ISBN 13 : 9048198232
Total Pages : 339 pages
Book Rating : 4.0/5 (481 download)
Download or read book Boron Rich Solids written by Nina Orlovskaya and published by Springer Science & Business Media. This book was released on 2010-10-07 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this book is to discuss the current status of research and development of boron-rich solids as sensors, ultra-high temperature ceramics, thermoelectrics, and armor. Novel biological and chemical sensors made of stiff and light-weight boron-rich solids are very exciting and efficient for applications in medical diagnoses, environmental surveillance and the detection of pathogen and biological/chemical terrorism agents. Ultra-high temperature ceramic composites exhibit excellent oxidation and corrosion resistance for hypersonic vehicle applications. Boron-rich solids are also promising candidates for high-temperature thermoelectric conversion. Armor is another very important application of boron-rich solids, since most of them exhibit very high hardness, which makes them perfect candidates with high resistance to ballistic impact. The following topical areas are presented: •Boron-rich solids: science and technology •Synthesis and sintering strategies of boron rich solids •Microcantilever sensors •Screening of the possible boron-based thermoelectric conversion materials; •Ultra-high temperature ZrB2 and HfB2 based composites •Magnetic, transport and high-pressure properties of boron-rich solids •Restrictions of the sensor dimensions for chemical detection •Armor
Author : Arthur Edward Newkirk
Publisher :
ISBN 13 :
Total Pages : 256 pages
Book Rating : 4.E/5 ( download)
Download or read book The Preparation and Properties of Crystalline Boron ... written by Arthur Edward Newkirk and published by . This book was released on 1940 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Otfried Madelung
Publisher : Springer Science & Business Media
ISBN 13 : 3642188656
Total Pages : 705 pages
Book Rating : 4.6/5 (421 download)
Download or read book Semiconductors written by Otfried Madelung and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Data Handbook is a updated and largely extended new edition of the book "Semiconductors: Basic Data". The data of the former edition have been updated and a complete representation of all relevant basic data is now given for all known groups of semiconducting materials.
