氯离子对陶质样品腐蚀机理初步研究  

A preliminary study of the corrosion mechanism of chloridion on ceramic samples

作　　者：张悦 金普军[3] Zhang Yue;Jin Pujun

机构地区：[1]陕西历史博物馆,陕西西安710061 [2]馆藏壁画保护修复与材料科学研究国家文物局重点科研基地,陕西西安710061 [3]陕西师范大学材料科学与工程学院,陕西西安710069

出　　处：《文博》2022年第6期96-100,共5页

摘　　要：陶质文物因其疏松多孔的结构因素,易于受周围环境影响。本研究利用X射线衍射仪(XRD)、红外光谱仪(IR)、X射线荧光光谱仪(XRF)及多功能成像光电子能谱仪(XPS),对模拟陶块腐蚀前后的成分、物相结构、官能团等进行检测分析,结果表明:腐蚀性氯离子对陶质样品中钠长石结构具有破坏性,可以与陶块硅酸盐骨架中阳离子发生静电吸附,引起Ca^(2+)、Na^(+)和Mg^(2+)等金属阳离子的溶解迁移,且浓度越高腐蚀性越强。氯离子对陶质样块腐蚀机理研究不仅有助于推动酥粉陶器的可溶盐腐蚀机理研究,也能够为酥粉陶质文物保护提供科学依据和理论指导。Due to their loose and porous structure, ceramic cultural relics are prone to environmental degradation. This research applies X-ray diffractometer(XRD), infrared spectrometer(IR), X-ray fluorescence spectrometer(XRF) and X-ray photoelectron spectrometer(XPS) to examine the chemical composition, phase structure, and functional group of ceramic samples after a corrosion simulation. The results demonstrate that corrosive chloridion has a destructive effect on the structure of the plagioclase feldspar of the ceramic samples. It creates electrostatic adhesion with the cation in the carbonate skeleton of the ceramic samples, whilst also causes the leaching and dissolution of metal cations such as Ca^(2+), Na^(+)and Mg^(2+). The higher concentration of the chloridion, the more corrosive it becomes. The study of the corrosion mechanism of chloridion on ceramic samples can not only promote studies of the corrosion mechanisms of dissolvable salts that damage ceramic objects but might also provide scientific evidence and theoretic instruction on the conservation of ceramic cultural relics with porous structure.

关 键 词：陶质样品 氯离子 腐蚀机理 

分 类 号：O652[理学—分析化学] K876.3[理学—化学]