Nb5Si3N

metal

· JVASP-116604· Nb5Si3N

Nb5Si3N is a niobium silicide nitride compound belonging to the refractory transition-metal ceramics family, designed for ultra-high-temperature structural applications. This material is primarily investigated in aerospace and energy sectors as a candidate for next-generation turbine components, thermal barriers, and oxidation-resistant coatings where conventional superalloys approach their performance limits. Niobium silicides offer superior thermal stability and oxidation resistance compared to traditional nickel-based systems, making them attractive for hypersonic vehicles and advanced power generation, though development remains largely in research and prototype stages.

turbine blades and vaneshypersonic vehicle structureshigh-temperature coatingsthermal barrier materialsaerospace propulsion systemsadvanced power generation

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	29,470.2	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)	16,405.2	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2520	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Property	Unit	Conditions
Band Gap(Eg)2 entries	eV	DFT · OptB88vdW
↳	eV	DFT · TBmBJ
Magnetic Moment(μB)	µB	DFT · OptB88vdW

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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.7295	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

Export Control

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.

Nb5Si3N — Properties & Data | MatWorld

Nb5Si3N

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control