采用电化学极化法在铸铁表面制备出锈层以模拟带锈的铁质文物,对试样用恒电流极化法进行脱氯处理,在脱氯过程中采用不同材质、不同形状、不同分布方式的辅助电极,比较脱氯效果表明, 用笼状低碳钢网做辅助阳极, 经过48 h的恒电流脱氯,试样中氯离子迁出率可达70.10%, 氯的含量由5.26mass%下降到0.32 mass%.综合考虑脱氯辅助阳极材料成本、可操作性以及脱氯效果,低碳钢网作为辅助阳极综合性能较高.
Samples of rust cast iron were prepared by the electrochemical polarization to simulate anciet relics of iron. Then the samples were dechlorinated by constant current polarization method. The dechlorination treatment was carried out with auxiliary electrodes made of different materials with various shapes and arrangements. The results showed that a cage-like auxiliary anode of low carbon steel net showed effective with a chloride removal rate up to 70.10% and thereby the chlorine content was decreased from 5.26 mass% to 0.32 mass% after 48 h dechlorination. Considering the cost of auxiliary anode material, maneuverability and dechlorination performance, low-carbon steel net is most suitable to be taken as auxiliary anode in electrochemical dechlorination.
参考文献
| [1] | 祝鸿范, 周浩. 出土铁器文物的脱盐清洗研究[J].文物保护与考古科学, 1995, 7(1): 1.[2] Reguer S, Dillmann P, Mirambet F. Buried iron archaeological artefacts: Corrosion mechanisms related to the presence of Cl-containing phases[J]. Corros. Sci., 2007, 49 (6):2726.[3] Stephen T. Structure, composition and deterioration of unearthed iron objects[A]. Current problems in the conservation of metal antiquities: thirteenth international symposium on the conservation and restoration of cultural property[C]. Tokyo, 1993:35.[4] Veppek S. A new method for the restoration of archeological metallic artifacts by means of low pressure plasma treatment:the development and the present status[A]. Current problems in the conservation of metal antiquities: thirteenth international symposium on the conservation and restoration of cultural property[C]. Tokyo, 1993: 71.[5] Selwyn L. Overview of archaeological iron: the corrosion problem, key factors affecting treatment, and gaps in current knowledge[A]. Proceedings of metal 2004[C]. National Museum of Australia Canberra ACT, 2004: 294.[6] Shigeo A, Yoshimitsu H, Shoji H, et al. Stabilization of archaeological iron[A]. Current problems in the conservation of metal antiquities: thirteenth international symposium on the conservation and restoration of cultural property[C]. Tokyo, 1993:91.[7] 王蕙贞, 宋迪生, 李涛等.唐九成宫出土铁器的抢救性保护研究[J]. 文物保护与考古科学, 2008,20(4): 41.[8] 吴天才. 出土铁器文物的脱盐[J]. 考古与文物, 2003, 4(1):94.[9] Higuchi S. Changes in the Conservation treatment of excavated iron Objects in Japan[A]. Current problems in the conservation of metal antiquities: thirteenth international symposium on the conservation and restoration of cultural property[C]. Tokyo, 1993: 29.[10] Takayasu K. Desalting of iron objects found in inland area by LiOH method[A]. Current problems in the conservation of metal antiquities: thirteenth international symposium on the conservation and restoration of cultural property[C]. Tokyo, 1993: 101.[11] 胡钢, 吕国诚, 许淳淳等.铁质文物脱盐过程中的钼酸盐缓蚀作用[J]. 腐蚀与防护, 2007, 28(4):191.[12] 田正昭, 秋山隆保, 江本义理. 水中遗物保护研究II---论碱性溶液对铁器进行脱盐处理的方法[J].文物保护与考古科学, 1990, 2(2): 53.[13] Pearson C. The preserbation of iron cannon after 200 years under the sea[J]. Stud. Conser., 1972, 17: 91.[14] Liu J G, Li Y T, Wu M T. Electrochemical Methods for Chloride Removal from Simulated Cast Iron Artefacts[J]. Stud.Conser., 2008, 53: 41.[15] North N A, Pearson C. Washing methods for chloride removal from marine iron artifacts[J]. Stud. Conser., 1978, 23: 174.[16] Sharma V C, 潘路译. 金属铁器的保护处理方法[J]. 文博, 1991:84.[17] 吴荫顺, 曹备. 阴极保护和阳极保护: 原理、技术及工程应用[M].北京: 中国石化出版社, 2007: 143.[18] Dalard F, Gourbeyre Y, Desgrigy C. Chloride removal from archaeological cast iron by pulsating current[J]. Stud. Conser.,2002, 2(47): 117.[19] David A S. Gerhard Eggert. Iron and Steel in Art[M].London: Archetype Publications, 2009: 136.[20] 欧阳维真, 王蕾, 许淳淳. 模拟铁器文物恒电流碱液脱氯技术[J].桂林工学院学报, 2007, 27(4): 572.[21] Ouyang W Z, Cao X, Wang N. A mathematical model for electrochemical chloride removal from marine cast iron artifacts[J].Acta Metall. Sin. (Eng. Lett.), 2009, 22(2): 91.[22] Worth C, Donld K, Juan R. Less is more:measure of chloride removal rate from wrought iron artifacts during electrolysis[J].Stud. Conser., 2001, 46: 68.[23] Reguer S, Dillmann P, Mirambet F. Buried iron archaeological artefacts: Corrosion mechanisms related to the presence of Cl-containing phases[J]. Corros. Sci., 2007, 49(6):2726. |
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