purple plague
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English[edit]
Noun[edit]
- (chemistry, electronics) The brittle, bright-purple intermetallic compound AuAl2, formed when gold and aluminium are heated while in direct contact (for instance, if a gold wire is bonded to an aluminium contact pad and experiences heating due to electrical resistance).
- (electronics) The problems caused by the formation of this compound, including the formation of voids in the contact area and the potential for fracture of the gold-aluminium junction.
Synonyms[edit]
(intermetallic compound):