Hafnium diboride is a type of ceramic composed of hafnium and boron that belongs to the class of ultra-high temperature ceramics . It has a melting temperature of about 3250 °C. It is an unusual ceramic, having relatively high thermal and electrical conductivities , properties it shares with isostructural titanium diboride and zirconium diboride . It is a grey, metallic looking material. Hafnium diboride has a hexagonal crystal structure, a molar mass of 200.11 grams per mole, and a density of 11.2 g/cm .
3-641: HFB may refer to: Hafnium boride (HfB) Hamburger Flugzeugbau , German aircraft manufacturer Harry F. Byrd , a prominent US Senator from Virginia Hexafluorobenzene , an aromatic organofluoride Hexafluoro-2-butyne , an alkyne organofluoride Hindu Forum of Britain Hochschule für Bankwirtschaft (HfB), now part of the Frankfurt School of Finance & Management Housing Finance Bank , Uganda Houston Food Bank Topics referred to by
6-768: Is different from Wikidata All article disambiguation pages All disambiguation pages Hafnium boride Hafnium diboride is often combined with carbon , boron , silicon , silicon carbide , and/or nickel to improve the consolidation of the hafnium diboride powder ( sintering ). It is commonly formed into a solid by a process called hot pressing , where the powders are pressed together using both heat and pressure. The material has potential for use in hypervelocity reentry vehicles such as ICBM heat shields or aerodynamic leading-edges , due to its strength and thermal properties. Unlike polymer and composite material, HfB 2 can be formed into aerodynamic shapes that will not ablate during reentry. Hafnium diboride
9-403: The same term [REDACTED] This disambiguation page lists articles associated with the title HFB . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=HFB&oldid=1083629282 " Category : Disambiguation pages Hidden categories: Short description
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