کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1472287 990376 2006 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphological characterisation and spectroscopic studies of the corrosion behaviour of tungsten heavy alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Morphological characterisation and spectroscopic studies of the corrosion behaviour of tungsten heavy alloys
چکیده انگلیسی

Tungsten-based alloys have been used in a wide variety of industrial and military applications. These alloys are composed mainly of tungsten (88–95%) with various combinations of nickel, cobalt, iron and copper usually making up the remaining fraction.The corrosion behaviours of five munitions grade tungsten alloys of interest have been examined using immersion tests and wet-dry cycle tests to determine the mechanisms involved in the release of the metallic components. Analyses carried out using SEM, EDS and grazing incidence XRD techniques, show the release of tungsten as well as alloying elements due to galvanic corrosion resulting from the difference in electrode potential between the tungsten phase and the binder phase in all cases studied. The extent of corrosion was directly related with the dissolution of tungsten in the binder phase during the sintering stage of manufacture. In W–Ni–Co–Fe alloys binder phase corrosion was observed while the relatively noble tungsten phase was less affected. The reverse was observed for a W–Cu alloy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 48, Issue 10, October 2006, Pages 3281–3297
نویسندگان
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