کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5358218 1503617 2015 64 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
CoCrMo alloy for orthopedic implant application enhanced corrosion and tribocorrosion properties by nitrogen ion implantation
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
CoCrMo alloy for orthopedic implant application enhanced corrosion and tribocorrosion properties by nitrogen ion implantation
چکیده انگلیسی
CoCrMo alloy corrosion and tribocorrosion properties are crucial for orthopedic implant application. These properties have been enhanced by implanting nitrogen ions with 100 keV energy. The corrosion current density of the implanted alloy is reduced by an order of magnitude, compared with the original alloy without implantation. In the tribocorrosion tests, the potential of the implanted alloy remain almost unchanged at around 0.05 V versus Ag/AgCl, while the potential of the original alloy without implantation changes from −0.4 to −0.6 and then to about −0.5 V versus Ag/AgCl, showing typical tribocorrosion behavior. Tribocorrosion tests also show that the 4 × 1017 N+/cm2 implantation reduces the friction coefficient from 0.35 to 0.15. Various characterization results indicate that the implantation induces a novel composite microstructure of the nanocrystalline CrN embedded inside amorphous CoCrMo matrix in the implanted layer, which enhances hardness, corrosion and tribocorrosion properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 347, 30 August 2015, Pages 23-34
نویسندگان
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