脫氯處理對(duì)出土鐵器腐蝕速率的影響
發(fā)布時(shí)間:2018-07-02 20:00
本文選題:脫氯 + 腐蝕速率。 參考:《文物保護(hù)與考古科學(xué)》2014年03期
【摘要】:正脫鹽處理可以降低考古出土鐵器的氯離子濃度,提高文物的穩(wěn)定性。然而,對(duì)脫氯處理和鐵器腐蝕速率之間的關(guān)系,從未進(jìn)行過定量的研究分析。英國(guó)卡迪夫大學(xué)考古與文物保護(hù)學(xué)院和大英博物館文物保護(hù)與科學(xué)研究部的研究人員選用英國(guó)3個(gè)不同考古遺址發(fā)掘出土的35根鐵釘,制作了66個(gè)樣品進(jìn)行了實(shí)驗(yàn)。在室溫條件(20±3)℃下,用0.1mol/L的氮?dú)饷撗鮊aOH溶液(dNaOH)或0.1mol/L NaOH/0.05mol/L Na2SO3溶液(AS20)對(duì)其中的35個(gè)樣品進(jìn)行了脫氯處理,另外31個(gè)樣品未作處理。在75℃、75%RH的環(huán)
[Abstract]:The positive desalination treatment can reduce the chloride ion concentration of the excavated iron and improve the stability of the archaeological relics. However, the relationship between dechlorination and iron corrosion rate has never been quantitatively studied. Researchers from the College of Archaeology and Heritage Conservation of Cardiff University and the Department of Heritage Conservation and Scientific Research of the British Museum made 66 samples from 35 iron nails excavated from three different archaeological sites in Britain. At room temperature (20 鹵3) 鈩,
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