Which mechanism caused the 'tin pest' phenomenon that weakened some historical bronze artifacts?

💡 Explanation

When certain bronzes are exposed to very low temperatures, a phase transformation to a more brittle allotrope of tin occurs because tin exists in two forms (alpha and beta), leading to disintegration. Therefore, transformation to a brittle allotrope results, rather than corrosion, hardening, or dezincification which involve different degradation mechanisms.

• Which risk increased within the Aztec chinampas agricultural system due to intensive continuous maize cultivation?
• Which navigational error increases when an 18th-century mariner misaligns a sextant's mirrors before celestial observation?
• Which function did epicycles serve in Ptolemy's geocentric model of the cosmos?
• Which consequence results from long-term seasonal water table fluctuations around a ziggurat's mud-brick foundation?
• Which limitation increased as astrolabe miniaturization pushed craftsmanship to its physical constraints?
• Which outcome resulted from the controlled flooding of chinampas agricultural systems?