کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
615949 1454860 2010 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surface finishing: Impact on tribological characteristics of WC–Co hardmetals
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Surface finishing: Impact on tribological characteristics of WC–Co hardmetals
چکیده انگلیسی

Flat samples of WC–Co hardmetals with 6–12 wt%Co were surface finished by grinding, polishing and wire-electro-discharge machining (EDM). Comparative dry reciprocating sliding experiments against WC–6 wt%Co pins were performed using a Plint TE77 tribometer. Tribological characteristics were recorded online. Wear surfaces were characterized by surface scanning topography and scanning electron microscopy. Wire-EDM’ed samples exhibited higher friction and wear compared to ground and polished equivalents. This trend was correlated to X-ray diffraction measurements revealing tensile residual surface stresses in WC after wire-EDM contrary to compressive surface stresses after grinding and polishing. However, finer executed EDM reduces friction and wear significantly.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 43, Issues 1–2, January–February 2010, Pages 40–54
نویسندگان
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