Understanding the unique corrosion phenomenon of Sanxingdui embrittled gold masks using scanning electrochemical cell microscopy (SECCM): Intergranular corrosion of Au-Ag-Pb ternary alloy
Source abstract
Abstract
The study investigated the rare corrosion of embrittled gold masks excavated from the Sanxingdui archaeological site, attributing the embrittlement to preferential corrosion of intergranular Pb-containing phases through morphological studies using metallographic microscopy and SEM-EDS. Scanning electrochemical cell microscopy (SECCM) technology was used to quantitatively analyze simulated Au-Ag-Pb alloy samples to compare the electrochemical properties of different phases at the microscopic level. The results revealed an electrochemical activity order of Au-Ag < Au 2Pb < AuPb 2+Pb xO y, which explains the varying levels of retention for different components in gold masks and provides a reference for subsequent conservation strategy.
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Research context
OpenAlex topics: Conservation Techniques and Studies · Corrosion Behavior and Inhibition · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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