کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1691216 1011300 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructures and corrosion behaviors of Zr modified CrN coatings deposited by DC magnetron sputtering
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Microstructures and corrosion behaviors of Zr modified CrN coatings deposited by DC magnetron sputtering
چکیده انگلیسی

Zirconium modified chromium nitride coatings with various Zr contents have been prepared by a DC reactive magnetron sputtering technique. The detailed investigations in terms of composition, phase structure, morphology and corrosion properties have been performed by GDOES, XRD, SEM and electrochemical measurements, respectively. The as-deposited coatings with Zr contents ranging from 0 to 3.2 at. % form nanocrystalline solid solutions, where Zr substitute Cr in the CrN lattice. With increasing Zr contents, the lattice parameters increase but the grain sizes show little effects. All the coatings exhibit dense compact columnar structures in SEM cross-sectional observations. Electrochemical measurements in 3.5% NaCl solutions revealed that the additions of Zr into CrN coatings improved their chemical inertness. The coated samples with much low corrosion current densities in nA/cm2 range show their excellent protective characteristics to the stainless steel substrates. The corrosion mechanism, however, was due to the slight pitting corrosions, which were mainly localized in the growth defects.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 82, Issue 11, 19 June 2008, Pages 1332–1336
نویسندگان
, , , , , ,