魏家庄遗址出土铁质文物的脱盐处理研究

山东济南魏家庄遗址出土铁质文物中含有大量有害氯离子,严重威胁着文物的安全。因此,脱盐就成为该批铁器保护的重点,是阻止铁器继续腐蚀的重要保证。在经一系列实验工作后,该批铁器的脱盐溶液采用0.005mol/L NaOH溶液,对于仅为铁质的容器类铁器采用直接浸泡法,同时结合冷热交替和超声波法;对于带有鞘的兵器类铁器采用2%Primal AC33加固后再进行脱盐;对于带有漆皮痕迹的铁器也试用了纸浆脱盐法。铁器经脱盐后氯离子含量大大降低,脱盐取得了很好的效果。

Study on the desalination of iron relics excavated from the Weijiazhuang site

Iron relics excavated from the Weijiazhuang site contained high content of harmful chlorine salts, which threatened the safety of these cultural relics. After a series of experiments, 0.005 mol/L NaOH solution was selected for desalination. Direct immersion combined with alternating cooling and heating and ultrasonic treatment were used for container shaped iron relics. A 2%Primal AC33 solution was used for reinforcing iron weapons with sheath before desalination, and wood pulp was also used to remove salt in iron relics having traces of paint. As a result, the chlorine content of the iron was greatly reduced after desalination. The results were very satisfactory.