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The Investigation Of The Preparation And Evaluation Of High Purity Elemental Boron
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Book Synopsis The Investigation of the Preparation and Evaluation of High Purity Elemental Boron by : J. T. Buford
Download or read book The Investigation of the Preparation and Evaluation of High Purity Elemental Boron written by J. T. Buford and published by . This book was released on 1966 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrapure boron was produced via the boron triiodide intermediate. The BI3 was synthesized from crude elemental boron and C.P. grade iodine at various temperatures. A conversion efficiency of 56% was obtained using a charge of -4 +6 mesh boron at a temperature of 900-950C. Purification of the boron triiodide was performed by distillation in a 30 plate Oldershaw distillation apparatus, by batch zoning of the BI3 matrix, and by vacuum distillation. Thermal decomposition of the distilled BI3 produced boron with approximately 50 ppm carbon as the major impurity. The carbon impurity was measured by a gas chromatographic technique. Boron was crystallized for electrical measurements by vacuum zoning, using induction heating and by melting in a high pressure resistance heated furnace. Using this same high pressure equipment the synthesis of boron phosphide, boron arsenide and boron antimonide was studied. (Author).
Book Synopsis A Statistical Evaluation of Some Factors in the Preparation of Boron by Fused-salt Electrolysis by : James H. Russell
Download or read book A Statistical Evaluation of Some Factors in the Preparation of Boron by Fused-salt Electrolysis written by James H. Russell and published by . This book was released on 1967 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Book Synopsis The Preparation of High-purity Boron Via the Iodide by : A. F. Armington
Download or read book The Preparation of High-purity Boron Via the Iodide written by A. F. Armington and published by . This book was released on 1964 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper the present methods of boron preparation are discussed with emphasis on the iodide intermediate. Several methods of boron triiodide preparation were investigated, the most satisfactory method being the preparation from the elements. A yield of 60 pct based on iodine is found for this method. Zone-refining, sublimation, distillation, and fractionalrecrystallization results are given for the boron triiodide, with distillation producing the best results. Several methods of decomposition are also discussed. The purity of the resulting iodide boron approximates the purity of the best available bromide boron. (Author).
Book Synopsis Government-wide Index to Federal Research & Development Reports by :
Download or read book Government-wide Index to Federal Research & Development Reports written by and published by . This book was released on 1966-11 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book OAR written by and published by . This book was released on 1967 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Force Research Resumés written by and published by . This book was released on with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Preparation of High-purity Boron by :
Download or read book The Preparation of High-purity Boron written by and published by . This book was released on 1950 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations written by and published by . This book was released on 1967 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Defense Industry Bulletin written by and published by . This book was released on 1966 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis List of Bureau of Mines Publications and Articles ... with Subject and Author Index by : United States. Bureau of Mines
Download or read book List of Bureau of Mines Publications and Articles ... with Subject and Author Index written by United States. Bureau of Mines and published by . This book was released on 1970 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Publications Announcements with Indexes by : United States. National Aeronautics and Space Administration
Download or read book Technical Publications Announcements with Indexes written by United States. National Aeronautics and Space Administration and published by . This book was released on 1962 with total page 1318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography of AFCRL Publications from 1 July 1966 to 30 September 1967 by : Air Force Cambridge Research Laboratories (U.S.)
Download or read book Bibliography of AFCRL Publications from 1 July 1966 to 30 September 1967 written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1968 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This bibliography lists all in-house reports, journal articles, and contractor reports issued from 1 July 1966 to 30 September 1967. Part I lists all in-house reports by the series in which they were issued; Part II lists all in-house reports, journal articles, and contractor reports by the Laboratory responsible for their preparation. In Part I, the reports are listed numerically by series; in Part II, in-house reports and journal articles are listed alphabetically by author, and contractor reports are listed numerically by the AFCRL report number.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-05 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Preparation of High-purity Boron Via the Iodide by : Alton F. Armington
Download or read book The Preparation of High-purity Boron Via the Iodide written by Alton F. Armington and published by . This book was released on 1964 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper the present methods of boron preparation are discussed with emphasis on the iodide intermediate. Several methods of boron triiodide preparation were investigated, the most satisfactory method being the preparation from the elements. A yield of 60 pct based on iodine is found for this method. Zone-refining, sublimation, distillation, and fractionalrecrystallization results are given for the boron triiodide, with distillation producing the best results. Several methods of decomposition are also discussed. The purity of the resulting iodide boron approximates the purity of the best available bromide boron. (Author)
Book Synopsis OAR Cumulative Index of Research Results by :
Download or read book OAR Cumulative Index of Research Results written by and published by . This book was released on with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
