Trisiliciumtetranitrid

Bezeichnung:Trisiliciumtetranitrid

CAS-Nr12033-89-5

Englisch Name:Silicon nitride

CBNumberCB8744847

SummenformelN4Si3

Molgewicht140.2833

MOL-Datei12033-89-5.mol

Synonyma

Trisiliciumtetranitrid

Trisiliciumtetranitrid physikalisch-chemischer Eigenschaften

Schmelzpunkt	1900 °C
Dichte	3.44 g/mL at 25 °C (lit.)
Brechungsindex	2.8
RTECS-Nr.	VW0650000
Aggregatzustand	powder
Farbe	Pale gray
Wichte	3.44
Widerstand (resistivity)	10*6 (ρ/μΩ.cm)
Wasserlöslichkeit	Insoluble water.
Crystal Structure	Hexagonal
Hydrolytic Sensitivity	1: no significant reaction with aqueous systems
Merck	14,8497
Stabilität	Stable.
CAS Datenbank	12033-89-5(CAS DataBase Reference)
EPA chemische Informationen	Silicon nitride (Si3N4) (12033-89-5)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	37
S-Sätze:	22-24/25
WGK Germany	3
F	10
TSCA	Yes

Gefahreninformationscode (GHS)

Silicon nitride Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R37:Reizt die Atmungsorgane.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
slightly beige powder
Physikalische Eigenschaften
Gray amorphous powder or crystals. Resistant to thermal shock. Good oxidation resistance up to 1500°C but decomposes into nitrogen and silicon above 1850°C. Excellent corrosion resistance to molten nonferrous metals such as Al, Pb, Zn, Cd, Bi, Rb, and Sn, and molten salts like NaCl-KCl, NaF, and silicate glasses. However, corroded by molten Mg, Ti, V, Cr, Fe, and Co, cryolite, KOH, and Na₂O.
Verwenden
As high tempereture engineering material for use in gas turbines, diesel engines.
Verwenden
Silicon Nitride is used in preparation of thermal conductive Poly(Me Methacrylate)/Silicon Nitride nanocomposites via click chemistry.
Verwenden
Silicon nitride (Si3N4), resistant to oxidation, is an excellent coating for metals, as well as an adhesive and abrasive, and it is used in high-temperature crucibles. It has proven useful as heat-resistant substance for the nozzles on rocket engines.
Allgemeine Beschreibung
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.
Flammability and Explosibility
Non flammable

Silicon nitride Upstream-Materialien And Downstream Produkte

Trisiliciumtetranitrid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

12033-89-5, Silicon nitride Verwandte Suche:

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