کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7833098 | 1503517 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thin films of AlCrFeCoNiCu high-entropy alloy by pulsed laser deposition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Pulsed laser deposition has been used to prepare thin films of the high entropy alloy AlCrFeCoNiCu. The 35â¯nm films were deposited in ultra-high vacuum onto glass at room temperature and above and analysed using X-ray diffraction and X-ray photoelectron spectroscopy. Films deposited at room temperature exhibit a mix of FCC and BCC reflections, the FCC crystallites having size similar to the film thickness, but the BCC crystallites are larger. The intensity of the reflections from both crystal structures reduce with increasing deposition temperature, the fall in BCC commencing at lower temperature than the FCC associated with a reduction of the content of Al and Cu. X-ray photoelectron spectroscopy shows that the films deposited at room temperature are closer to stoichiometry than those at higher temperatures. An important feature of the X-ray photoelectron spectroscopy depth profiles is surface segregation, the outer 3â¯nm of the high entropy alloy films has higher concentration of Al and, to a lesser extent, Cr.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 455, 15 October 2018, Pages 153-159
Journal: Applied Surface Science - Volume 455, 15 October 2018, Pages 153-159
نویسندگان
M.D. Cropper,