Corrosion evolution of UNS C90300 bronze in simulated acid rain of Hong Kong. (18th March 2022)

• Record Type: Journal Article
• Authors: Zhou, Zhenju; Zhou, Yu; Huang, Yingjian; Zhu, Qiuqing; Tang, Yongming
• Is Part Of: Surface and interface analysis. Volume 54:Number 7(2022)
• Page Start: 734
• Page End: 746
• Publication Date: 2022-03-18
• Subjects: acid rain -- bronze -- corrosion evolutions -- corrosion products -- EIS -- surface analysis; Surfaces (Physics) -- Periodicals; Surface chemistry -- Periodicals; Thin films -- Periodicals; 541.33
• DOI: 10.1002/sia.7086
• Languages: English
• ISSNs: 0142-2421

Abstract

Abstract : Corrosion evolutions of UNS C90300 bronzes with and without artificial patina were investigated in the simulated acid rain of Hong Kong. The corrosion products mainly composed of cuprite were formed on the surface exhibiting slight protection for the bronze substrate. The ratios of Sn and Zn in the corrosion products are lower than in the alloy. The artificial patina effectively enhances the corrosion resistance of bronze substrate, even after 30 days of immersion. For both bare and patinated bronzes the Sn‐ and Zn‐based species are absent in the outer layers of corrosion products, and Cu2 O species in the outer layer can partially transform into Cu (II) ionic state due to the abundant supply of dissolved oxygen.