کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
620246 | 1455077 | 2006 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Friction and dry sliding wear behaviour of cermets
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
It is shown that wear resistance and coefficient of friction depend on the type and chemical composition of the cermets. The WC-Co cermets have the highest wear resistance. The wear rate of WC-Co and TiC-NiMo cermets increased with increasing binder content in the cermets. The wear of Cr3C2-Ni cermets is more complicated and depends on the composition of cermets. The wear of WC-Co cermets is caused mainly by preferential removal of the cobalt binder, followed by fracture of the intergranular boundaries and fragmentation of the carbide grains. The main wear mechanism in the TiC-NiMo cermets is polishing (micro-abrasion) and adhesion, resulting in a low wear rate. The main wear mechanism of Cr3C2-Ni cermets involves thermal cracking and fatigue-related crushing of large carbide grains and carbide framework and also adhesion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 260, Issues 7â8, 7 April 2006, Pages 815-824
Journal: Wear - Volume 260, Issues 7â8, 7 April 2006, Pages 815-824
نویسندگان
Jüri Pirso, Mart Viljus, Sergei LetunovitÅ¡,