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Sigma-Aldrich

Silicon nitride

powder, ≥99.9% trace metals basis

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Synonym(s):
Trisilicon tetranitride
Linear Formula:
Si3N4
CAS Number:
Molecular Weight:
140.28
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.23

Quality Level

assay

≥99.9% trace metals basis

form

powder

particle size

<1 μm

density

3.44 g/mL at 25 °C (lit.)

SMILES string

N12[Si]34N5[Si]16N3[Si]25N46

InChI

1S/N4Si3/c1-5-2-6(1)3(5)7(1,2)4(5)6

InChI key

HQVNEWCFYHHQES-UHFFFAOYSA-N

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General description

Silicon nitride based ceramics possess high fracture toughness, hardness and wear resistance, resistance to corrosion, thermal stability. Two known polymorphs of silicon nitride exist, alpha and beta Si3N4, both have hexagonal structure. A study shows that a third state, cubic spinel structure, has also been synthesized.

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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Synthesis of cubic silicon nitride
Zerr A, et al
Nature, 400, 340-342 null
Silicon Nitride and Related Materials
Riley FR
Journal of the American Ceramic Society. American Ceramic Society, 83(2), 245-265 (2000)
Quanjun Liu et al.
PloS one, 7(9), e46014-e46014 (2012-10-03)
Nanopores have become an important tool for molecule detection at single molecular level. With the development of fabrication technology, synthesized solid-state membranes are promising candidate substrates in respect of their exceptional robustness and controllable size and shape. Here, a 30-60
Zhifeng Shi et al.
Journal of the mechanical behavior of biomedical materials, 16, 9-20 (2012-11-10)
Behaviors of silicon nitride films and their relation to blood compatibility and biomechanical have been interesting subjects to researchers. A systematic blood compatibility and biomechanical property investigation on the deposition of silicon-nitride films under varying N₂ and CF₄ flows was
Orsolya Tapasztó et al.
Journal of nanoscience and nanotechnology, 12(11), 8775-8778 (2013-02-21)
The dispersion properties of single- and multi-walled carbon nanotubes as well as mechanically exfoliated few layer graphene flakes within the silicon nitride ceramic matrix have been investigated. Small angle neutron scattering experiments have been employed to gain information on the

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