Silicon nitride

Silicon nitride

Sintered silicon nitride ceramic
Names
Preferred IUPAC name
Silicon nitride
Other names
Trisilicon tetranitride,[1]
Nierite
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.620 Edit this at Wikidata
EC Number
  • 234-796-8
MeSH Silicon+nitride
UNII
  • InChI=1S/N4Si3/c1-5-2-6(1)3(5)7(1,2)4(5)6 checkY
    Key: HQVNEWCFYHHQES-UHFFFAOYSA-N checkY
  • InChI=1S/N4Si3/c1-5-2-6(1)3(5)7(1,2)4(5)6
    Key: HQVNEWCFYHHQES-UHFFFAOYSA-N
  • InChI=1/N4Si3/c1-5-2-6(1)3(5)7(1,2)4(5)6
    Key: HQVNEWCFYHHQES-UHFFFAOYAJ
  • N13[Si]25N4[Si]16N2[Si]34N56
Properties
Si3N4
Molar mass 140.283 g·mol−1
Appearance grey, odorless powder[2]
Density 3.17 g/cm3[2]
Melting point 1,900 °C (3,450 °F; 2,170 K)[2] (decomposes)
Insoluble[2]
2.016[3]
Thermochemistry[4]
101.3 J·mol−1·K−1
−743.5 kJ·mol−1
−642.6 kJ·mol−1
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 [5]
Related compounds
Other anions
 silicon carbide, silicon dioxide
Other cations
 boron nitride, carbon nitride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Silicon nitride is a chemical compound of the elements silicon and nitrogen. Si
3N
4 (Trisilicon tetranitride) is the most thermodynamically stable and commercially important of the silicon nitrides,[6] and the term ″Silicon nitride″ commonly refers to this specific composition. It is a white, high-melting-point solid that is relatively chemically inert, being attacked by dilute HF and hot H
3PO
4. It is very hard (8.5 on the mohs scale). It has a high thermal stability with strong optical nonlinearities for all-optical applications.[7]

  1. ^ "Silicon nitride (compound)". PubChem. Retrieved 2023-06-04.
  2. ^ a b c d Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.88. ISBN 1-4398-5511-0.
  3. ^ Refractive index database. refractiveindex.info
  4. ^ CRC handbook of chemistry and physics : a ready-reference book of chemical and physical data. William M. Haynes, David R. Lide, Thomas J. Bruno (2016-2017, 97th ed.). Boca Raton, Florida. 2016. ISBN 978-1-4987-5428-6. OCLC 930681942.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)
  5. ^ ITEM # SI-501, SILICON NITRIDE POWDER MSDS Archived 2014-06-06 at the Wayback Machine. metal-powders-compounds.micronmetals.com
  6. ^ Mellor, Joseph William (1947). A Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 8. Longmans, Green and Co. pp. 115–7. OCLC 493750289.
  7. ^ López-Suárez, A.; Torres-Torres, C.; Rangel-Rojo, R.; Reyes-Esqueda, J. A.; Santana, G.; Alonso, J. C.; Ortiz, A.; Oliver, A. (2009-06-08). "Modification of the nonlinear optical absorption and optical Kerr response exhibited by nc-Si embedded in a silicon-nitride film". Optics Express. 17 (12): 10056–10068. Bibcode:2009OExpr..1710056L. doi:10.1364/OE.17.010056. ISSN 1094-4087. PMID 19506657.