کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7833276 1503517 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Formation of black patina on an ancient Chinese bronze sword of the Warring States Period
ترجمه فارسی عنوان
شکل گیری پاتینا سیاه بر روی شمشیر برنز چینی باستان دوره ای جنگجویان
کلمات کلیدی
پاتین سیاه، شمش برنز، خوردگی، ریز ساختار، میکروسکوپ الکترونی، رامان،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
In general, black patina is formed upon the surface of the ancient bronze mirrors. Recently, a kind of black patina is found on an ancient bronze sword, which was made 2500 years ago during the Warring States Period of China. In this paper, chemical compositions and microstructures of the black patina were characterized by using instruments including optical microscope (OM), scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD) and Raman spectrometer (Raman). The results revealed that the formation of the black patina on the bronze sword is due to two reasons: (1) high tin (Sn) content reaches to 22.92 wt%; (2) damp, wet and acid burial environment. Therefore, it conforms to the natural corrosion formation mechanism, i.e., after selective dissolution of elements Cu and Pb from the matrix, element Sn was oxidized and then, the gel-like SnO2·xH2O filled the vacancies left by the selective corrosion of Cu and Pb. This work will be helpful for better restoration and preservation of the bronze cultural relics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 455, 15 October 2018, Pages 724-728
نویسندگان
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