|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:appearance
|
gray or off-white powder
|
|
gptkbp:bandGap
|
5.3 eV
|
|
gptkbp:CASNumber
|
gptkb:12033-89-5
|
|
gptkbp:chemicalFormula
|
gptkb:Si3N4
|
|
gptkbp:containsElement
|
nitrogen
silicon
|
|
gptkbp:corrosionResistance
|
true
|
|
gptkbp:crystalSystem
|
hexagonal
|
|
gptkbp:density
|
3.44 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:James_Edward_Reynolds
|
|
gptkbp:discoveredIn
|
1857
|
|
gptkbp:EC_number
|
234-796-8
|
|
gptkbp:electricalResistivity
|
>10^14 Ω·cm
|
|
gptkbp:hardness
|
Mohs 8.5
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
silicon nitride
|
|
gptkbp:isBrittle
|
true
|
|
gptkbp:isNonMetallic
|
true
|
|
gptkbp:isOxidationResistant
|
true
|
|
gptkbp:isStableAtHighTemperatures
|
true
|
|
gptkbp:isUsedInMedicalImplants
|
true
|
|
gptkbp:isUsedInSemiconductors
|
true
|
|
gptkbp:IUPACName
|
gptkb:silicon_nitride
|
|
gptkbp:meltingPoint
|
1900 °C
|
|
gptkbp:PubChem_CID
|
518735
|
|
gptkbp:solubility
|
insoluble
|
|
gptkbp:thermalConductivity
|
17–30 W/(m·K)
|
|
gptkbp:UNII
|
7E6E8V6T0G
|
|
gptkbp:uses
|
gptkb:ceramics
cutting tools
turbine blades
engine parts
ball bearings
|
|
gptkbp:bfsParent
|
gptkb:Chemical_Vapor_Deposition_(CVD)
|
|
gptkbp:bfsLayer
|
6
|