کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9809743 | 1517715 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of molybdenum borides and molybdenum silicides in molten salts and their oxidation behavior in an air-water mixture
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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 formation of various coatings in molybdenum-boron and molybdenum-silicon systems was investigated. Boronizing and siliciding treatments were conducted in molten salts under inert gas atmosphere in the 850-1050 °C temperature range for 7 h. The presence of boride (e.g. Mo2B, MoB, Mo2B5) and silicide (MoSi2, Mo5Si3) phases, formed on the surface of Mo plates, was confirmed by X-ray diffraction analysis. The distribution of elements was determined by means of wavelength dispersive spectroscopy (WDS) spectra of the surface and line-scan analyses from surface to interior. Depending on the process type (diffusional or electrochemical) and temperature, the thickness of the protective layers formed on the substrate ranged from 6 to 40 μm. The oxidation resistance of obtained phases was investigated in an air-water mixture in the temperature range of 500-700 °C for a period up to 400 h. An improved oxidation behavior of coated plates in comparison with that of pure molybdenum was observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 195, Issues 2â3, 31 May 2005, Pages 182-188
Journal: Surface and Coatings Technology - Volume 195, Issues 2â3, 31 May 2005, Pages 182-188
نویسندگان
S.A. Kuznetsov, S.V. Kuznetsova, E.V. Rebrov, M.J.M. Mies, M.H.J.M. de Croon, J.C. Schouten,