کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1470295 | 990322 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Corrosion, passivation and breakdown of passivity of neodymium
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The anodic polarisation behaviour of neodymium was investigated in various solutions (pH 1–12). While in sulphuric acid solution high dissolution rates were observed, spontaneous passivity occurred in phosphoric acid solutions, oxalic acid solutions and sodium hydroxide solutions. However, the stability of these protecting layers strongly depends on the kind and concentration of anions present, especially in acidic environments. A mechanism of the passive layer breakdown is proposed. During pitting corrosion erosive degradation of the electrode was observed. In all solutions, abnormal hydrogen evolution was observed when neodymium was in the active state during anodic polarisation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 52, Issue 3, March 2010, Pages 886–891
Journal: Corrosion Science - Volume 52, Issue 3, March 2010, Pages 886–891
نویسندگان
R. Sueptitz, M. Uhlemann, A. Gebert, L. Schultz,