Study on Corrosion of Bronze Relics——An Example for Anthropogenic Analogue Study on Disposal System of High-level Radioactive Waste

The paper presents composition analyses and structure observation of bronze relic samples which were collected from Hubei, Jiangxi, Guangxi, Shaanxi, Beijing, environmental conditions of the sites where the samples were taken. Research results indicate that the bronze relics can be continuously corroded with time, the corrosion layer of bronze relics consists of at least two sub-layers, such as oxide and carbonate sub-(layers.) Sometimes, there is corrosion sub-layer mechanically such as loose sub-layer on a (specific) sample. And SnO_(2) oxide sub-layer also occurs in a few samples. The thickness of bronze corrosion layers is varied with the different climate environments in which the samples studied were taken, and their thickness are 50～260 μm and 300～800 μm in the dried and humid climate region, respec\|tively. As far as the natural corrosion-(resistant) is concerned, the bronze is available for material of canister of high-level waste (HLW) repository system.