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为探求符合文物保护要求的青铜器保护处理方法,对青铜病形成的过程和原因进行了模拟小孔腐蚀实验研究。对青铜模拟闭塞电池内的化学和电化学状态的变化,进行了不同Cl~-浓度和不同的pH值溶液条件下的电化学测试。实验结果证明,青铜闭塞孔穴腐蚀能导致蚀孔内Cl~-浓缩,pH值降低,腐蚀电流增大,局部腐蚀的加速,导致青铜病的形成。青铜病的闭塞孔穴腐蚀特征的研究,对进一步探求符合文物保护要求的青铜器保护处理方法具有较好的理论指导意义。
In order to explore the bronze protection and treatment methods which meet the requirements of cultural relics protection, the experiment and research on the formation and the causes of bronze disease were simulated. Electrochemical tests were performed under different Cl ~ - concentrations and different pH conditions on the changes of chemical and electrochemical states in the simulated and closed cell bronze. Experimental results show that the corrosion of bronze occluded cavities can lead to the Cl ~ - concentration in the pores, the decrease of pH, the increase of corrosion current and the acceleration of local corrosion, resulting in the formation of bronze disease. Bronze disease occlusion hole corrosion characteristics of the study to further explore the protection of cultural relics protection requirements of bronze protection and treatment methods have a good theoretical guidance.