Boron fiber (original) (raw)
Boronová vlákna jsou kompozitní materiál, který vzniká reakcí CVD na substrátu z wolframu nebo z uhlíku. Popis výroby boronového vlákna poprvé zveřejnil Američan Talley v roce 1959.
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| dbo:abstract | Boronová vlákna jsou kompozitní materiál, který vzniká reakcí CVD na substrátu z wolframu nebo z uhlíku. Popis výroby boronového vlákna poprvé zveřejnil Američan Talley v roce 1959. (cs) Boron Fiber (also commonly called boron filament) is an amorphous elemental boron product which represents the major industrial use of elemental (free) boron. Boron fiber manifests a combination of high strength and high elastic modulus. A common use of boron fibers is in the construction of high tensile strength tapes. Boron fiber use results in high-strength, lightweight materials that are used chiefly for advanced aerospace structures as a component of composite materials, as well as limited production consumer and sporting goods such as golf clubs and fishing rods. One of the uses of boron fiber composites was the horizontal tail surfaces of the F-14 Tomcat fighter. This was done as carbon fiber composites were not yet developed to the point they could be used, as they were in many of aircraft designs since. In the production process, elemental boron is deposited on an even tungsten wire substrate which produces diameters of 4.0 mil (102 micron) and 5.6 mil (142 micron). It consists of a fully borided tungsten core with amorphous boron. Boron fibers and sub-millimeter sized crystalline boron springs are produced by laser-assisted chemical vapor deposition. Translation of the focused laser beam allows to produce even complex helical structures. Such structures show good mechanical properties (elastic modulus 450 GPa, fracture strain 3.7%, fracture stress 17 GPa) and can be applied as reinforcement of ceramics or in micromechanical systems. (en) El boro pertenece al grupo III A de la tabla periódica, aunque tiene características muy distintas de los demás elementos de su grupo: aluminio, indio, galio, y talio, ya que es el único no metal del grupo. Hay analogías mayores con metaloides como el carbono y el silicio. Es un material semiconductor, duro, cuya temperatura de fusión es alta. (es) Die Borfaser ist eine künstlich hergestellte anorganische Mischfaser als Sekundärfaser, deren Primärfaser eine monofile Wolfram-Mikrofaser ist und deren Fasermantel durch Abscheidung von Bor (als Hüllschicht) in eine Borfaser umgewandelt wird. Die Borfaser ist ideal für Konstruktionsverbundstoffe von Weltraumsystemen, da sie Strahlungsabschirmung, mechanische Festigkeit und Leichtbau gewährleistet. Auf dieses Eigenschaftsprofil hat Claude P. Talley im Jahr 1959 hingewiesen. (de) Борное волокно (англ. boron fibres или boron filaments) — конструкционное волокно, получаемое осаждением бора на непрерывную тонкую нить или проволоку. (ru) |
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| dbp:name | Boron fiber (en) |
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| rdfs:comment | Boronová vlákna jsou kompozitní materiál, který vzniká reakcí CVD na substrátu z wolframu nebo z uhlíku. Popis výroby boronového vlákna poprvé zveřejnil Američan Talley v roce 1959. (cs) El boro pertenece al grupo III A de la tabla periódica, aunque tiene características muy distintas de los demás elementos de su grupo: aluminio, indio, galio, y talio, ya que es el único no metal del grupo. Hay analogías mayores con metaloides como el carbono y el silicio. Es un material semiconductor, duro, cuya temperatura de fusión es alta. (es) Die Borfaser ist eine künstlich hergestellte anorganische Mischfaser als Sekundärfaser, deren Primärfaser eine monofile Wolfram-Mikrofaser ist und deren Fasermantel durch Abscheidung von Bor (als Hüllschicht) in eine Borfaser umgewandelt wird. Die Borfaser ist ideal für Konstruktionsverbundstoffe von Weltraumsystemen, da sie Strahlungsabschirmung, mechanische Festigkeit und Leichtbau gewährleistet. Auf dieses Eigenschaftsprofil hat Claude P. Talley im Jahr 1959 hingewiesen. (de) Борное волокно (англ. boron fibres или boron filaments) — конструкционное волокно, получаемое осаждением бора на непрерывную тонкую нить или проволоку. (ru) Boron Fiber (also commonly called boron filament) is an amorphous elemental boron product which represents the major industrial use of elemental (free) boron. Boron fiber manifests a combination of high strength and high elastic modulus. A common use of boron fibers is in the construction of high tensile strength tapes. Boron fiber use results in high-strength, lightweight materials that are used chiefly for advanced aerospace structures as a component of composite materials, as well as limited production consumer and sporting goods such as golf clubs and fishing rods. (en) |
| rdfs:label | Boron fiber (en) Boronová vlákna (cs) Borfaser (de) Fibra de boro (es) Борное волокно (ru) |
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| foaf:name | Boron fiber (en) |
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