Co4 Re4 B4

semiconductor

· Co4 Re4 B4

Co₄Re₄B₄ is an experimental intermetallic boride compound combining cobalt, rhenium, and boron in a complex crystal structure. This material belongs to the family of high-entropy and multi-element borides under active research for high-temperature applications. While not yet commercialized at scale, such cobalt-rhenium borides are investigated for extreme-environment engineering where traditional superalloys reach their thermal limits, particularly in aerospace and energy sectors where superior high-temperature strength and oxidation resistance are critical.

High-temperature structural materialsAerospace engine componentsResearch/experimental applicationsRefractory coatingsUltra-high temperature alloysAdvanced ceramics research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00380	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.2370	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.

Co4 Re4 B4

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control