Si2 Hf4

semiconductor

· Si2 Hf4

Si₂Hf₄ is a hafnium silicide ceramic compound that belongs to the family of refractory silicides—advanced materials designed for extreme-temperature applications where conventional metals and oxides fail. This material is primarily explored in research and aerospace contexts for high-temperature structural components, leveraging hafnium's exceptional thermal stability and silicon's lightweight properties to create ceramics resistant to oxidation and thermal shock at temperatures exceeding 1000°C.

aerospace engine componentsrefractory coatingshigh-temperature structural ceramicsthermal protection systemsresearch/development applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	142.5	GPa	—
Shear Modulus(G)	95.85	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00110	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.6810	eV/atom	—

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

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.

Si2 Hf4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control