SI2N2 — Properties & Data | MatWorld

SI2N2

ceramic

· JVASP-32959· SI2N2

Si₂N₂ is a silicon nitride ceramic compound belonging to the family of non-oxide ceramics known for high hardness and thermal stability. This material is investigated primarily in research and advanced materials development contexts for applications requiring exceptional mechanical strength at elevated temperatures, wear resistance, and chemical inertness. Silicon nitride ceramics are valued in demanding industrial environments where conventional materials would degrade, offering superior performance compared to alumina or traditional silicates in extreme-condition applications.

high-temperature structural componentswear-resistant cutting toolsturbine engines and bearingsadvanced ceramic researchabrasive and refractory applicationsmechanical seals

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1429	lb/in³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	1.226	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	6.534	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000816	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000731	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-316.8	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	268.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.6532	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	0.6435	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

SI2N2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental