کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7004870 1454999 2013 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The reciprocating wear behaviour of TiC-304L stainless steel composites prepared by melt infiltration
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
The reciprocating wear behaviour of TiC-304L stainless steel composites prepared by melt infiltration
چکیده انگلیسی
TiC-based ceramic-metal composites, or cermets, are widely used in applications requiring wear and corrosion resistance. In the present work, a family of novel TiC-stainless steel (grade 304L) cermets has been developed using vacuum melt infiltration (1500 °C/1 h), with steel binder contents varied from 5 to 30 vol%. Microstructural analysis showed a homogenous distribution of TiC within the steel binder, with mean TiC grain sizes of ∼6 μm. Increasing the steel content resulted in an increase in the indentation fracture resistance and a decrease in the hardness. The reciprocating wear resistance of the cermets was assessed using a ball-on-flat geometry, using a WC-Co sphere dry sliding on the polished cermet surface. It was shown that there is an increase in the specific wear rate with both increasing load and binder content. Similarly, a higher coefficient of friction was observed with higher steel binder contents. The morphology of the worn surface was investigated using scanning electron microscopy, and associated energy dispersive X-ray spectroscopy, to more fully understand the operative wear mechanisms. Evidence of a transition from two- to three-body abrasive wear was observed, together with the formation of a tribolayer, indicating that adhesive wear was also occurring.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 303, Issues 1–2, 15 June 2013, Pages 321-333
نویسندگان
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