purple plague

noun

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).

Similar
amethyst goldpurple goldviolet gold
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Meanings

nounpurple plague (uncountable)
  1. uncountablebusinessThe 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).
  2. uncountablebusinessThe 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 & antonyms

Similar
amethyst goldpurple goldviolet gold
Also see
amethyst gold
Cite this entry
APA

purple plague. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/purple%20plague

MLA

“purple plague.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/purple%20plague. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “purple plague,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/purple%20plague.

Source: purple plague on Wiktionary, CC BY-SA 4.0.