کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9809788 | 1517716 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical characterization of plasma sprayed WC-Co coatings by impedance techniques
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The porosity of plasma sprayed coatings (which were either conductive when Co was incorporated in a WC matrix or insulating with Al2O3) was tested by impedance techniques in a NaCl aqueous medium. Models of active pores (conductive coating) based on transmission lines or inactive pores (insulating coating) based on lumped parameter circuits were proposed. A good agreement was found between the impedance predicted by the models and the impedances measured in a wide frequency range on both conductive and insulating coatings. In particular, the coatings can be compared on the basis of their porosity. For WC-Co coatings, it was found that the porosity decreases when the Co content increases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 194, Issues 2â3, 1 May 2005, Pages 335-343
Journal: Surface and Coatings Technology - Volume 194, Issues 2â3, 1 May 2005, Pages 335-343
نویسندگان
R. Saenger, D. Martin, C. Gabrielli,