کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
693687 889897 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improvement of the anticorrosion properties of polypyrrole by zinc phosphate pigment incorporation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Improvement of the anticorrosion properties of polypyrrole by zinc phosphate pigment incorporation
چکیده انگلیسی

A commercial zinc phosphate pigment was incorporated into polypyrrole (PPy) matrix during its electrochemical synthesis in order to improve the corrosion protection of polypyrrole on AISI 1010 steel. PPy/zinc phosphate composite films were synthesised in sodium salicylate medium with high current efficiency and containing 10% by weight of zinc and 4% by weight of phosphate. The influence of stirring and concentration of the electrolyte on the degree of pigment incorporation were investigated, as well as polymerisation time and applied current density. The morphology of the films was determined by scanning electron microscopy (SEM) and the distribution of pigment in the polymeric matrix was carried out by X-ray photoelectron spectroscopy (XPS). The PPy and PPy/zinc phosphate films were submitted to salt spray corrosion test, weight loss test and to electrochemical measurements like corrosion potential with time. In all tests, the composite films showed an enhancement in its protective action in comparison with PPy films.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Organic Coatings - Volume 58, Issue 1, 1 January 2007, Pages 64–69
نویسندگان
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