کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10638185 | 995407 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemical degradation of glasses under simulated marine medium
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
With the aim to study the chemical response of selected glass samples to an underwater medium, accelerated ageing tests were undertaken in the laboratory by immersing the samples into a solution, which simulates the average composition of sea water. Tests were conducted both at low (â15 °C) and high (40 °C) temperature for several time cycles. The main goal of the research was to study, through different observation and analytical techniques, chemical alteration mechanisms as a function of the glass compositions and experimental conditions (e.g., temperature, time). Results showed that glasses experience a recurrent decay process, which starts at a neutral pH medium with leaching of alkaline ions and concludes at a basic medium, as a consequence of hydrolytic attack, with destruction of glass network and loss of main forming oxides. The research has thus provided outstanding data that will be useful for future conservation and restoration of historical glasses preserved in an underwater medium.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 94, Issue 1, 15 November 2005, Pages 92-102
Journal: Materials Chemistry and Physics - Volume 94, Issue 1, 15 November 2005, Pages 92-102
نویسندگان
N. Carmona, M. GarcÃa-Heras, C. Gil, M.A. Villegas,