Hf5Si3N

ceramic

· JVASP-122446· Hf5Si3N

Hf5Si3N is a hafnium silicide nitride ceramic compound belonging to the refractory ceramic family, combining the high-temperature strength of hafnium silicides with the hardness and wear resistance imparted by the nitride phase. This material is primarily investigated in research contexts for ultra-high-temperature structural applications where conventional superalloys reach their limits, with potential use in aerospace propulsion systems, thermal protection systems, and cutting tool applications where sustained performance above 1500°C is required. Its notable advantage over monolithic silicides or nitrides lies in the combined thermal stability and mechanical property balance, though industrial adoption remains limited pending further development of manufacturing and cost optimization.

high-temperature aerospace componentsthermal protection systemsrefractory coatingscutting tools and wear surfaceshypersonic vehicle structuresresearch-stage advanced ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	11.19	kg/m³	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	eV	—
Magnetic Moment(μB)	0.000	µB	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	—
Formation Energy(ΔHf)	-1.032	eV/atom	—

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

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.

Hf5Si3N

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental