【摘要】：正一些墓葬或遺址出土的銀器具有暗沉的灰褐色表面,稱為角銀。在特殊埋藏環(huán)境下,銀質(zhì)文物主要的腐蝕產(chǎn)物可能為氯化銀(AgCl)。AgCl會(huì)形成脆而細(xì)小的顆粒層,使文物變脆。在一定條件下(潮濕、富氯),文物可能完全轉(zhuǎn)變?yōu)槁然y腐蝕產(chǎn)物。但是對(duì)角銀的腐蝕過(guò)程還少有研究。為了研究埋藏環(huán)境下角銀腐蝕產(chǎn)物和腐蝕機(jī)制,利用SEM、EDS等方法對(duì)8件角銀器金屬芯部及腐蝕層進(jìn)行了檢測(cè)分析。檢測(cè)分析表明,角銀腐蝕系統(tǒng)包含雙層:致密的內(nèi)層及多孔的外層。腐蝕產(chǎn)物主要為AgCl。一些器物在金屬芯部及腐蝕層內(nèi)層含有銅夾雜物。一些高礦化器物的腐蝕層內(nèi)層含有其他富氧相(含Si和Ca)。在
[Abstract]:Silver unearthed from some tombs or sites has a dark grayish-brown surface called silver horn. Under the special burial environment, the main corrosion product of silver cultural relics may be silver chloride (AgCl). AgCl, which may form brittle and fine granular layer, which makes the cultural relics brittle. Under certain conditions (wet, chlorine rich), cultural relics may be completely transformed into corrosion products of silver chloride. However, the corrosion process of diagonal silver is seldom studied. In order to study the corrosion products and corrosion mechanism of corner silver in buried environment, eight corner silver metal cores and corrosion layers were detected and analyzed by means of SEM,EDS and other methods. Detection and analysis show that the angle-silver corrosion system consists of a double layer: a dense inner layer and a porous outer layer. Corrosion products are mainly AgCl. Some objects contain copper inclusions in the metal core and the inner layer of the corrosion layer. The corrosion layer of some high mineralizers contains other oxygen-rich phases (including Si and Ca). In
【分類號(hào)】：TG146.32;K876.4

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