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Process for repatination of old restored bronze and brass articles

机译:修复旧的青铜器和铜器的过程

摘要

The invention relates to the conservation of the cultural patrimony, namely to a process for repatination of restored zones by superficial passivation of old bronze and brass articles, discovered during the archaeological excavations or those from museum collections that have undergone interventions with the view of stopping the destruction by corrosion.Summary of the invention consists in that the process includes application of an alcoholic dispersion, containing stibium pentasulphide, as passivating agent, and two additives, consisting of phosphor pentoxide or orthophosphoric acid(40%) and thiourea, in the mass ratio, alcohol:Sb2S5:P4O10:SC(NH2)2=40:8:1:1 or alcohol:Sb2S5:H3PO4:SC(NH2)2=39:8:2:1, correspondingly. The alcoholic dispersion is obtained by fine grinding of the solid components, first separately, then all together, at the gradual addition of the metered quantity of alcohol and is applied onto the clean surface at the room temperature during 5…10 minutes, then the surface is repeatedly treated in 2…3 hours, with subsequent washing with alcohol and drying at the maximum temperature of 35°C and relative humidity of at least 30%. Afterwards, it is additionally applied a protective film, containing alcoholic solution of propolis, melt of wax and paraffin or silicone resin.The result consists in obtaining a protective patina, uniform in thickness and colour, climatically resistant, with good adhesive properties.
机译:本发明涉及文化遗产的保护,即通过对考古发掘过程中发现的旧青铜器或黄铜制品或经过博物馆干预而采取干预措施的博物馆收藏中的旧青铜器和黄铜制品进行表面钝化来对修复区进行修复的方法。发明概述本发明的概述在于,该方法包括以质量比使用包含五硫化二锑作为钝化剂的醇分散体和由五氧化二磷或正磷酸(40%)和硫脲组成的两种添加剂。 ,相应地,酒精:Sb2S5:P4O10:SC(NH2)2 = 40:8:1:1或酒精:Sb2S5:H3PO4:SC(NH2)2 = 39:8:2:1。通过逐步研磨固体成分,首先分别研磨,然后一起研磨,再逐渐加入定量的酒精,然后在室温下5至10分钟内将其涂在清洁的表面上,然后再将表面在2到3个小时内反复进行处理,随后用酒精洗涤,并在35°C的最高温度和至少30%的相对湿度下干燥。然后再涂一层保护膜,该保护膜包含蜂胶的酒精溶液,蜡和石蜡或硅树脂的熔体,其结果是获得一种保护性古铜色,厚度和颜色均一,耐气候性,具有良好的粘合性能。

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