کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
693916 889909 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chromate leaching from inhibited primers: Part I. Characterisation of leaching
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Chromate leaching from inhibited primers: Part I. Characterisation of leaching
چکیده انگلیسی

Leaching and characterisation studies have been undertaken on two chromate-inhibited epoxy polyamide primers. Leaching was carried out in 5% (w/v) NaCl solutions at different pH values (1, 3, 5 and 7) and the amount of Cr released into solution was monitored over time. Cr release was initially high, but as the immersion time increased the leaching from the primers slowed. Prior to and after immersion, the primers were characterised by a number of techniques including electron microprobe analysis, X-ray microdiffraction, Raman spectroscopy, and positron annihilation lifetime spectroscopy. The unexposed primers were found to contain the inorganic phases SrCrO4, BaSO4 and TiO2 (anatase or rutile). Upon immersion, water uptake by the primers was observed, together with a decrease in the amount of SrCrO4 in the primers. These studies provide insights into the mechanism of chromate leaching from inhibited primers.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Organic Coatings - Volume 56, Issue 1, 1 May 2006, Pages 23–32
نویسندگان
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