Statements (32)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:chemical_compound
|
| gptkbp:appearance |
gray or white powder
|
| gptkbp:CASNumber |
gptkb:12033-89-5
|
| gptkbp:chemicalFormula |
gptkb:Si3N4
|
| gptkbp:commonName |
gptkb:silicon_nitride
|
| gptkbp:containsElement |
nitrogen
silicon |
| gptkbp:cookingMethod |
direct reaction of silicon and nitrogen at high temperature
|
| gptkbp:crystalSystem |
hexagonal
|
| gptkbp:density |
3.44 g/cm³
|
| gptkbp:electricalConductivity |
low
|
| gptkbp:firstSynthesized |
1857
|
| gptkbp:hardness |
high
|
| https://www.w3.org/2000/01/rdf-schema#label |
Si3N4
|
| gptkbp:isSolubleIn |
gptkb:water
gptkb:hydrofluoric_acid most acids |
| gptkbp:IUPACName |
trisilicon tetranitride
|
| gptkbp:meltingPoint |
>1900 °C (decomposes)
|
| gptkbp:molecularWeight |
140.28 g/mol
|
| gptkbp:oxidationResistance |
high
|
| gptkbp:refractoryMaterial |
true
|
| gptkbp:thermalConductivity |
high
|
| gptkbp:toxicity |
low
|
| gptkbp:uses |
gptkb:ceramics
cutting tools turbine blades engine parts ball bearings electronic substrates |
| gptkbp:bfsParent |
gptkb:silicon_nitride
|
| gptkbp:bfsLayer |
7
|