کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1476097 991141 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A route for the pressureless liquid-phase sintering of SiC with low additive content for improved sliding-wear resistance
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
A route for the pressureless liquid-phase sintering of SiC with low additive content for improved sliding-wear resistance
چکیده انگلیسی

A colloidal processing route has been developed for the pressureless sintering of dense SiC with a low content of sintering additives. In this route, a sol–gel solution precursor of the sintering additives is deposited onto the surface of the SiC particles, achieving a uniform distribution of the sintering additives in the green compact. This in turn promotes complete densification at short sintering times, which is not otherwise achievable when the batch is prepared by the standard method of mechanically mixing powders. It is also shown that the resulting ceramic has improved sliding-wear resistance compared to its counterpart prepared by the classical method, with essentially the same rate of mild and severe wear but a notably delayed transition from the mild to the severe wear regimes. This improvement is attributed to the reduction in the microstructural defect size achieved by the colloidal processing. Implications for the fabrication of low-cost SiC ceramics for wear-resistance applications are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 32, Issue 4, April 2012, Pages 965–973
نویسندگان
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