کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1483828 1510548 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Interaction of silica glass with molten mixtures of lead and potassium nitrates
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Interaction of silica glass with molten mixtures of lead and potassium nitrates
چکیده انگلیسی

The formation of lead–silicate coatings onto the surface of silica glass after its treatment in molten mixtures of Pb(NO3)2–KNO3 and Pb(NO3)2–Cu(NO3)2–KNO3 at 420–520 °C was investigated. The coating formation was supported by the appearance and adsorption/sedimentation of lead–oxide cations and nano-particles, from the salt melt, onto the treated glass surface. These particles, deposited onto the substrate, interacted with the structure of silica glass and formed an amorphous lead–silicate coating exhibiting a chemical composition gradient from PbO to SiO2. The admixture of Cu(NO3)2 in the abovementioned salt mixture favored higher rates of lead oxide sedimentation (co-sedimentation with copper oxide). The external potion of this coating was progressively crystallized during treatment in the molten mixture of Pb(NO3)2–Cu(NO3)2–KNO3 due to the nucleation of Cu2O crystals supporting the formation of Pb8Cu(Si2O7)3, Pb3O4 and 2PbO · SiO2.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 352, Issues 38–39, 15 October 2006, Pages 4122–4127
نویسندگان
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