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Table 2 XRD results of the corrosion products that formed on the ironwork units

From: Fortification performance of polyurethane coating in outdoor historical ironworks

Card number Compound Chemical composition Percentage
34-1266 Akaganeite Fe+3O(OH) 23.1 Major
08-0097 Goethite Fe2O3·H2O 23.1
04-0755 Maghemite Fe2O3 23.1
18-0701 Lead oxide hydrate PbO·4H2O 15.4 Minor
05-0490 Quartz SiO2 9.4 Traces
88-1808 Calcite CaCO3 5.9