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About: Zirconium diboride     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : umbel-rc:ChemicalSubstanceType, within Data Space : dbpedia.org associated with source document(s)

Type: Thingdul:ChemicalObjectchemical substanceChemical compoundyago:Abstraction100002137yago:Cognition100023271yago:Compound105870180yago:Concept105835747yago:Content105809192yago:Idea105833840yago:PsychologicalFeature100023100yago:WikicatZirconiumCompoundschemical compoundyago:Whole105869584umbel-rc:ChemicalSubstanceType New Facet based on Instances of this Class

Zirconium diboride (ZrB2) is a highly covalent refractory ceramic material with a hexagonal crystal structure. ZrB2 is an ultra high temperature ceramic (UHTC) with a melting point of 3246 °C. This along with its relatively low density of ~6.09 g/cm3 (measured density may be higher due to hafnium impurities) and good high temperature strength makes it a candidate for high temperature aerospace applications such as hypersonic flight or rocket propulsion systems. It is an unusual ceramic, having relatively high thermal and electrical conductivities, properties it shares with isostructural titanium diboride and hafnium diboride.