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- Zirconium_diboride abstract "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.ZrB2 parts are usually hot pressed (pressure applied to the heated powder) and then machined to shape. Sintering of ZrB2 is hindered by the material's covalent nature and presence of surface oxides which increase grain coarsening before densification during sintering. Pressureless sintering of ZrB2 is possible with sintering additives such as boron carbide and carbon which react with the surface oxides to increase the driving force for sintering but mechanical properties are degraded compared to hot pressed ZrB2.Additions of ~30 vol% SiC to ZrB2 is often added to ZrB2 to improve oxidation resistance through SiC creating a protective oxide layer - similar to aluminum's protective alumina layer.".
- Zirconium_diboride iupacName "Zirconium diboride".
- Zirconium_diboride thumbnail Magnesium-diboride-3D-balls.png?width=300.
- Zirconium_diboride wikiPageID "17690698".
- Zirconium_diboride wikiPageLength "6306".
- Zirconium_diboride wikiPageOutDegree "35".
- Zirconium_diboride wikiPageRevisionID "688697915".
- Zirconium_diboride wikiPageWikiLink Alpha_particle.
- Zirconium_diboride wikiPageWikiLink Atomic_diffusion.
- Zirconium_diboride wikiPageWikiLink Boron.
- Zirconium_diboride wikiPageWikiLink Boron_carbide.
- Zirconium_diboride wikiPageWikiLink Boron_trichloride.
- Zirconium_diboride wikiPageWikiLink Carbon.
- Zirconium_diboride wikiPageWikiLink Category:Borides.
- Zirconium_diboride wikiPageWikiLink Category:Zirconium_compounds.
- Zirconium_diboride wikiPageWikiLink Chemical_vapor_deposition.
- Zirconium_diboride wikiPageWikiLink Control_rod.
- Zirconium_diboride wikiPageWikiLink Covalent_bond.
- Zirconium_diboride wikiPageWikiLink Crystal_structure.
- Zirconium_diboride wikiPageWikiLink Crystallographic_defect.
- Zirconium_diboride wikiPageWikiLink Eutectic_system.
- Zirconium_diboride wikiPageWikiLink Grain_growth.
- Zirconium_diboride wikiPageWikiLink Hafnium.
- Zirconium_diboride wikiPageWikiLink Hafnium_diboride.
- Zirconium_diboride wikiPageWikiLink Hot_pressing.
- Zirconium_diboride wikiPageWikiLink Hydrogen.
- Zirconium_diboride wikiPageWikiLink Isostructural.
- Zirconium_diboride wikiPageWikiLink Lithium.
- Zirconium_diboride wikiPageWikiLink Material_failure_theory.
- Zirconium_diboride wikiPageWikiLink Nuclear_reactor.
- Zirconium_diboride wikiPageWikiLink Nuclear_transmutation.
- Zirconium_diboride wikiPageWikiLink Pearson_symbol.
- Zirconium_diboride wikiPageWikiLink Redox.
- Zirconium_diboride wikiPageWikiLink Scanning_tunneling_microscope.
- Zirconium_diboride wikiPageWikiLink Sintering.
- Zirconium_diboride wikiPageWikiLink Stoichiometry.
- Zirconium_diboride wikiPageWikiLink Surface_reconstruction.
- Zirconium_diboride wikiPageWikiLink Titanium_diboride.
- Zirconium_diboride wikiPageWikiLink Ultra-high-temperature_ceramics.
- Zirconium_diboride wikiPageWikiLink Zirconium(IV)_chloride.
- Zirconium_diboride wikiPageWikiLinkText "".
- Zirconium_diboride wikiPageWikiLinkText "Zirconium diboride".
- Zirconium_diboride wikiPageWikiLinkText "zirconium diboride".
- Zirconium_diboride imagecaption "STM image of the (2×2)-reconstructed ZrB2 surface".
- Zirconium_diboride imagefile "Magnesium-diboride-3D-balls.png".
- Zirconium_diboride imagefile "ZrB2 STM crop.png".
- Zirconium_diboride imagesize "220".
- Zirconium_diboride iupacname "Zirconium diboride".
- Zirconium_diboride othernames "ZrB2".
- Zirconium_diboride verifiedrevid "377887222".
- Zirconium_diboride wikiPageUsesTemplate Template:Cascite.
- Zirconium_diboride wikiPageUsesTemplate Template:Chembox.
- Zirconium_diboride wikiPageUsesTemplate Template:Chembox_Hazards.
- Zirconium_diboride wikiPageUsesTemplate Template:Chembox_Identifiers.
- Zirconium_diboride wikiPageUsesTemplate Template:Chembox_Properties.
- Zirconium_diboride wikiPageUsesTemplate Template:Chembox_Structure.
- Zirconium_diboride wikiPageUsesTemplate Template:Reflist.
- Zirconium_diboride wikiPageUsesTemplate Template:Zirconium_compounds.
- Zirconium_diboride subject Category:Borides.
- Zirconium_diboride subject Category:Zirconium_compounds.
- Zirconium_diboride type ChemicalCompound.
- Zirconium_diboride type ChemicalSubstance.
- Zirconium_diboride type Chemical.
- Zirconium_diboride type Redirect.
- Zirconium_diboride type ChemicalObject.
- Zirconium_diboride type Thing.
- Zirconium_diboride type Q11173.
- Zirconium_diboride comment "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.".
- Zirconium_diboride label "Zirconium diboride".
- Zirconium_diboride sameAs Q4161107.
- Zirconium_diboride sameAs دیبرید_زیرکونیم.
- Zirconium_diboride sameAs Diborure_de_zirconium.
- Zirconium_diboride sameAs m.047f_gx.
- Zirconium_diboride sameAs Диборид_циркония.
- Zirconium_diboride sameAs Q4161107.
- Zirconium_diboride wasDerivedFrom Zirconium_diboride?oldid=688697915.
- Zirconium_diboride depiction Magnesium-diboride-3D-balls.png.
- Zirconium_diboride isPrimaryTopicOf Zirconium_diboride.