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Author: Thomas Vasilos Publisher: ISBN: Category : Languages : en Pages : 28
Book Description
12 IN. X 12 IN. X 3/8 IN. THICKNESS WAS HOT PRESSED TO A DENSITY OF> 98% of theoretical by alloying additions at a temperature of 1750C and a pressure of 3500 psi. Chemical analysis reveals iron as the principal densification aid remaining in the hot pressed structure. Transverse rupture and elastic modulus tests were conducted on samples 1 3/4 in x 1/4 in. x .100 in. cut from a 12 in. x 12 in. tile. The data show the rupture strength decreasing from an average of 73.4 Ksi at room temperature to an average of 38.4 Ksi at 1400C. The elastic modulus decreases from 55.5 x 10 to the 6th power psi at room temperature to 35.5 x 10 to the 6th power psi at 1200C. Hardness measurements taken with a Knoop indenter (100 gm load) range from 2530 to 2670. (Author) Portions of this document are not fully legible.
Author: Thomas Vasilos Publisher: ISBN: Category : Languages : en Pages : 28
Book Description
12 IN. X 12 IN. X 3/8 IN. THICKNESS WAS HOT PRESSED TO A DENSITY OF> 98% of theoretical by alloying additions at a temperature of 1750C and a pressure of 3500 psi. Chemical analysis reveals iron as the principal densification aid remaining in the hot pressed structure. Transverse rupture and elastic modulus tests were conducted on samples 1 3/4 in x 1/4 in. x .100 in. cut from a 12 in. x 12 in. tile. The data show the rupture strength decreasing from an average of 73.4 Ksi at room temperature to an average of 38.4 Ksi at 1400C. The elastic modulus decreases from 55.5 x 10 to the 6th power psi at room temperature to 35.5 x 10 to the 6th power psi at 1200C. Hardness measurements taken with a Knoop indenter (100 gm load) range from 2530 to 2670. (Author) Portions of this document are not fully legible.
Author: Thomas Vasilos Publisher: ISBN: Category : Languages : en Pages : 30
Book Description
ATERIALS, ARMOR, DENSITY, COST EFFECTIVENESS*ARMOR, *LIGHTWEIGHT, *BORON CARBIDESLightweight, high modulus boron carbide was hot pressed to a density>98 percent of theoretical by alloying additions at a temperature of 1750C and a pressure of 3500 psi. The additives used were 5 percent sodium silicate and 0.5 percent magnesium oxide, added as magnesium nitrate and the mixture was ball milled with steel balls which introduced some iron in the final composition. Microstructure analysis indicated ultrafine-grained structure with average grain size of 0.55 micron. The process has been scaled up to provide 6 in. x 6 in. x 3/8 in. thick tiles, and eight tiles were supplied to AMMRC for ballistic evaluation, which will be the subject of a separate report.
Author: T.S. Srivatsan Publisher: CRC Press ISBN: 1351597191 Category : Technology & Engineering Languages : en Pages : 790
Book Description
Manufacturing Techniques for Materials: Engineering and Engineered provides a cohesive and comprehensive overview of the following: (i) prevailing and emerging trends, (ii) emerging developments and related technology, and (iii) potential for the commercialization of techniques specific to manufacturing of materials. The first half of the book provides the interested reader with detailed chapters specific to the manufacturing of emerging materials, such as additive manufacturing, with a valued emphasis on the science, technology, and potentially viable practices specific to the manufacturing technique used. This section also attempts to discuss in a lucid and easily understandable manner the specific advantages and limitations of each technique and goes on to highlight all of the potentially viable and emerging technological applications. The second half of this archival volume focuses on a wide spectrum of conventional techniques currently available and being used in the manufacturing of both materials and resultant products. Manufacturing Techniques for Materials is an invaluable tool for a cross-section of readers including engineers, researchers, technologists, students at both the graduate level and undergraduate level, and even entrepreneurs.
Author: Giorgi F Tavadze Publisher: Springer Science & Business Media ISBN: 3642352057 Category : Technology & Engineering Languages : en Pages : 168
Book Description
This translation from the original Russian book outlines the production of a variety of materials by methods of self-propagating high-temperature synthesis (SHS). The types of materials discussed include: hard, refractory, corrosion and wear-resistant materials, as well as other advanced and specialty materials. The authors address the issue of optimal parameters for SHS reactions occurring during processes involving a preliminary metallothermic reduction stage, and they calculate these using thermodynamic approaches. In order to confirm the effectiveness of this approach, the authors describe experiments focusing on the synthesis of elemental crystalline boron, boron carbides and nitrides. Other parts of this brief include theoretical and experimental results on single-stage production of hard alloys on the basis of titanium and zirconium borides, as well as macro kinetics of degassing and compaction of SHS-products. This brief is suitable for academics, as well as those working in industrial manufacturing companies producing hard alloys and composites for making metal-working machinery or drilling equipment.
Author: Ron Legarski Publisher: SolveForce ISBN: Category : Science Languages : en Pages : 585
Book Description
Explore the fascinating world of boron, one of the most versatile and impactful elements shaping modern technology and industry. "Boron: From Discovery to Modern Energy Applications" is a comprehensive guide to understanding boron’s journey from its discovery to its wide-ranging applications in fields such as energy storage, medicine, aerospace, agriculture, and materials science. This book dives deep into the chemical properties of boron, its extraction processes, and its industrial significance, while providing a forward-looking exploration of its potential to revolutionize key industries. Each chapter offers detailed insights into how boron is being used to address some of the world’s most pressing challenges. From boron-doped materials that enhance the performance of electric vehicles and renewable energy systems, to boron-based cancer treatments that are saving lives, this book uncovers the profound ways in which boron is influencing the future of science and technology. In addition to detailed case studies, this book features contributions from leading researchers and innovators, profiles of key figures in boron technology, and in-depth analysis of boron’s role in global trade and sustainable development. Whether you're a scientist, engineer, industry professional, or simply curious about the hidden power of boron, this book serves as an essential resource for understanding the critical role this element plays in the technological advancements of today and tomorrow. With comprehensive appendices, including data tables, conferences, and further reading resources, "Boron: From Discovery to Modern Energy Applications" is a must-read for anyone interested in how this often-overlooked element is driving innovation across industries.
Author: Thomas Vasilos
Author: Thomas Vasilos
Author: Thomas Vasilos
Author: 
Author: Arthur Wayland Dox![PB [report] PDF](https://books.google.com/books/content/images/frontcover/qXhQjiDR0YMC?fife=w80-h100)
Author: United States. Department of Commerce. Office of Technical Services
Author: T.S. Srivatsan
Author: Giorgi F Tavadze
Author: Henry James Wheeler Bliss
Author: United States. Patent Office
Author: Ron Legarski