کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1682010 1518710 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Near surface analysis of duplex PIII treated CoCr alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Near surface analysis of duplex PIII treated CoCr alloys
چکیده انگلیسی

The formation of expanded austenite in CoCr alloys is a well established process for forming hard and wear resistant surfaces for biomedical applications. However, even nitrogen implantation at reduced temperatures of 350 °C, where no CrN formation is observed, leads to a significant increase in the corrosion current, together with selective release of Co ions. By using a duplex nitrogen/oxygen process, a strong reduction of the corrosion rate is possible when the processing temperatures are limited to 300–350 °C. Detailed investigations into the chemical environment imply that a strong influence of grain boundaries or defects on the corrosion rate exists, which is not visible when measuring XPS spectra across a sufficiently large surface area.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 307, 15 July 2013, Pages 305–309
نویسندگان
, , , ,