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beryllium carbide

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230117
EISBN: 978-1-62708-298-3
... Abstract This chapter discusses the synthesis of important beryllium compounds, including beryllium borides, beryllium carbide, beryllium carbonates, beryllium carboxylates, beryllium halides, beryllium hydride, beryllium hydroxide, beryllium nitrate, beryllium nitride, beryllium oxalate...
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Published: 01 April 2013
precipitate (point 1) is a beryllium sulfide. (c) The small round precipitate (point 2) is a titanium carbide. (d) The small irregular precipitate (point 3) is also a titanium carbide. (e) The large blocky angular precipitate (point 4) is a beryllium carbide. Source: Ref 5 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230485
EISBN: 978-1-62708-298-3
... was found to predominate; the ratio of carbon pickup to weight gain was approximately 1 to 10. Forty percent of the carbon becomes beryllium carbide [ Gregg et al. 1960 , Scott 1960 ]. Gregg et al . [ 1961a , b ] suggested that this beryllium carbide is formed by the reaction: 2 Be + C...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230459
EISBN: 978-1-62708-298-3
... oxides that form on the surface of beryllium and their ability to withstand acids, bases, and corrosive agents found in rain and seawater. It explains how carbides, inclusions, ions, and impurities contribute to corrosion damage, particularly pitting, and how corrosion reduces the ductility and fracture...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230199
EISBN: 978-1-62708-298-3
...% second phase as angular compound in long stringers Lower alloys showed separate angular particles. Udy et al. [1949] Tin … Two-liquid melts. No appreciable tin in beryllium part of melt Carbides and other inclusions carried down with tin. Beryllium-rich phase in tin is eutectic, resolved at 2000...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550193
EISBN: 978-1-62708-307-2
..., must be securely clamped during machining operations to minimize any vibration or chatter. Carbide tools are most often used in machining beryllium. Finishing cuts are usually 50 to 130 μm (0.002 to 0.005 in.) in depth to minimize surface damage. Although most machining operations are performed without...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230339
EISBN: 978-1-62708-298-3
... ]. Machining on centers should be done using live (rotating) centers in contrast to stationary centers. In the latter case, carbide centers with lubricants must be used [ Paul 1967 ]. Since beryllium has a relatively low-precision elastic limit with the possibility of microcreep, care must be taken in cutting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230151
EISBN: 978-1-62708-298-3
..., and Properties of Beryllium Carbide , J. Electrochem. Soc. , Vol 99 , p 115 – 120 10.1149/1.2779672 • Dupouy J.M. , Poirier J.P. , Antolin-Beaudier J. , and Adda Y. , 1964 . Contribution a L’etude de la Deformation et de la Restauration du Beryllium Pur , J. Nucl. Mater. , Vol...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060273
EISBN: 978-1-62708-355-3
... and its alloys 365 53 317 46 Tantalum carbide 365 53 . . . . . . Magnesia 345 50 241 35 Alumina ceramic 345 50 207 30 Niobium carbide 338 49 . . . . . . Beryllium carbide 317 46 207 30 Chromium 289 42 . . . . . . Beryllium and its alloys 289 42.0 186...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230523
EISBN: 978-1-62708-298-3
... W.J. , 1952 . The Synthesis, Fabrication, and Properties of Beryllium Carbide , J. Electrochem. Soc. , Vol 99 , p 115 – 120 10.1149/1.2779672 Cooper R.E. , 1979 . Fracture Mechanics , Beryllium Science and Technology , Vol 2 ( No. 17 ), Floyd D.R. and Lowe J.N...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.9781627082983
EISBN: 978-1-62708-298-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230093
EISBN: 978-1-62708-298-3
... magnesium and excess beryllium fluoride vaporize during the melting under vacuum. Nonvolatiles, such as beryllium oxide, magnesium fluoride, and beryllium carbide, separate from the molten metal by sinking as a dross adhering to the bottom of the crucible. The purified metal is poured into an ingot mold...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230071
EISBN: 978-1-62708-298-3
... Abstract This chapter describes some of the chemical processes that have been developed to extract beryllium from different types of ore. It covers the Kjellgren-Sawyer sulfate method, the Degussa method, Copaux-Kawecki fluoride extraction, solvent extraction, and leaching and settling. It also...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230131
EISBN: 978-1-62708-298-3
... Although oxides themselves have excellent resistance to oxidation, they have considerably lower strength at higher temperatures than either the beryllides or the refractory metals and their alloys. Boron carbide has a breaking strength of approximately 30,000 psi (207 MPa), while silicon carbide, beryllium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230007
EISBN: 978-1-62708-298-3
... for the Electro-Metallurgical Corporation, a subsidiary of Union Carbide and Carbon Corporation. In 1929, the first specimen of ductile beryllium metal had been prepared and reported by Rosenhain in England [ NSRB 1953 ]. The beryllium industry had an uncertain but progressive industrial growth up to 1939...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230055
EISBN: 978-1-62708-298-3
... Abstract This chapter provides a fundamental understanding of beryllium reduction thermodynamics as a prerequisite for subsequent chapters on extraction, chemical processing, and corrosion. It examines a number of reduction methods along with a potential refining process, highlighting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230253
EISBN: 978-1-62708-298-3
... can also increase Be 2 C content. This type of carbide formation is more evident with induction-melted recycled beryllium. Herman and Spangler [1963a , b] and Spangler et al. [1964] reported that during zone refining of beryllium using a floating zone and induction heating, BeO, aluminum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230295
EISBN: 978-1-62708-298-3
... Abstract The vast majority of beryllium products are manufactured from blocks, forms, or billets of compacted powder that are machined or worked into shape. This chapter describes the metalworking processes used, including rolling, forming, forging, extrusion, drawing, and spinning. It covers...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240597
EISBN: 978-1-62708-251-8
... temperature and excellent resistance to pure water up to 300 °C (570 °F). However, corrosion resistance is impaired by impurities. The presence of carbides or chlorides can cause a reaction with moist air at room temperature. Above 760 °C (1400 °F), beryllium reacts with oxygen and nitrogen but not at all...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230361
EISBN: 978-1-62708-298-3
... Abstract This chapter discusses coating technologies that are applicable to beryllium, including physical and chemical vapor deposition, thermal evaporation, electroplating, sputtering, ion plating, and plasma arc spraying. It describes the advantages and disadvantages of each method...