Au4Zr5

metal
· Au4Zr5

Au4Zr5 is an intermetallic compound combining gold and zirconium in a 4:5 stoichiometric ratio, representing a hard, brittle phase typically found in the Au-Zr binary phase diagram. This material is primarily of research interest for specialized high-temperature and corrosion-resistant applications, as intermetallics in the Au-Zr system offer potential for extreme environment use where gold's corrosion resistance and zirconium's refractory characteristics are both advantageous. Unlike conventional gold alloys used in jewelry or bonding wire, Au4Zr5 and related Au-Zr phases are candidates for aerospace thermal barriers, nuclear or chemical processing environments, and electronic device interconnects where both thermal stability and resistance to aggressive media are critical.

Nuclear reactor componentsHigh-temperature corrosion barriersAerospace thermal managementElectronic interconnectsChemical processing equipmentResearch/developmental phase materials

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Formation Energy(ΔHf)
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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.