کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1603876 1515992 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced corrosion resistance of WC-Co with an ion beam mixed silicon carbide coating
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Enhanced corrosion resistance of WC-Co with an ion beam mixed silicon carbide coating
چکیده انگلیسی

Strong adhesion of a silicon carbide (SiC) coating to a WC-Co substrate was achieved through an ion beam mixing technique and the corrosion resistance of the SiC coated WC-Co was investigated by means of a potentiodynamic electrochemical test. In a 1 M NaOH solution, the corrosion current density of SiC-coated WC-Co after heat treatment at 500 °C was about 50 times lower than that for the as-received WC-Co. In addition, the corrosion resistance systematically increases with increasing the SiC coating thickness. On the other hand, for a 0.5 M H2SO4 solution, the corrosion current density for SiC-coated WC-Co was about 3 times lower than that for the as-received WC-Co. We discuss the physical reasons for the changes in the corrosion current density with the different electrolytes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 29, Issue 5, September 2011, Pages 582–585
نویسندگان
, , ,