文物保护与考古科学2024，Vol.36Issue(6)：54-64,11.DOI:10.16334/j.cnki.cn31-1652/k.20231003032
玉泉铁塔表面腐蚀机制及腐蚀演变过程的初探
Preliminary study on the mechanism of surface corrosion and the evolution of corrosion of Yuquan Iron Pagoda
刘雪刚 1张杨 2陈华 1张琼 1丁山 1王明强3
作者信息
- 1. 荆州文物保护中心,湖北荆州 434020
- 2. 湖北大学,湖北武汉 430062
- 3. 当阳市博物馆,湖北宜昌 444100
- 折叠
摘要
Abstract
Yuquan Iron Pagoda,one of the Key National Cultural Relic Protection Units,is seriously corroded.Exploring the corrosion mechanism of its surface and the corrosion evolution process could provide technical support for subsequent conservation and restoration of the iron pagoda.By analyzing the surface atmospheric corrosion of modern cast iron within 1 300 days and that of the iron pagoda after 963 years,a structure of the corrosion layers of the cast iron within 1 300 days of atmospheric corrosion and that of the iron pagoda after 963 years were explored.Additionally,a corrosion model of Yuquan Iron Pagoda suitable for the cast iron with a long period(963 years)was deduced according to the abovementioned structures.The morphology,composition,corrosion layer structure of the surface corrosion products of the cast iron and iron pagoda samples were analyzed by means of the weight measurement and digital photography,SEM,XRD and laser Raman spectrometry.Moreover,the corrosion resistances of the samples were tested by electrochemical impedance spectrometry.The results show that the corrosion weight loss and corrosion time accorded with power exponential function.The corrosion products of cast iron and iron pagoda were composed of Fe3O4,γ-FeO(OH),α-FeO(OH),α-Fe2O3,and the early corrosion was mainly distributed in thin water film.Besides,the later corrosion product layers were distributed in several layers.The α/γ value of measurable rust layer protection and the corrosion resistance of the corrosion layers were gradually increased.The decreases of the contents of γ-FeO(OH)and Fe3O4 and the increase of the content ofα-FeO(OH)were the main reasons for the structural transformation of cast iron and iron pagoda corrosion layers.关键词
玉泉铁塔/分析/锈蚀机制/腐蚀演变过程/耐蚀性Key words
Yuquan Iron Pagoda/Analysis/Corrosion mechanism/Corrosion evolution process/Corrosion resistance分类
社会科学引用本文复制引用
刘雪刚,张杨,陈华,张琼,丁山,王明强..玉泉铁塔表面腐蚀机制及腐蚀演变过程的初探[J].文物保护与考古科学,2024,36(6):54-64,11.
