کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7898094 | 1510131 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Manufacturing of electrical discharge machinable ZTA-TiC - hot pressing vs. spark plasma sintering
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Hot pressing and spark plasma sintering were applied to manufacture electrical discharge machinable ZTA-TiC ceramics containing 17â¯vol.% zirconia (1.5Y) and 24â¯vol.% titanium carbide in an alumina matrix. Sintering was carried out at 1450-1600â¯Â°C and 40â¯MPa pressure with 2â¯h dwell for HP and 10â¯min for SPS. The influence of sintering conditions on mechanical properties, microstructure, phase composition and electrical conductivity was investigated. Both sintering technologies lead to fully densified samples with similar strength and toughness. Hardness was generally lower for SPS. SPS samples develop a finer microstructure. HP samples the TiC grains tend to merge at high sintering so that HP materials reach significantly higher conductivities. Productivity and energy consumption per piece can be significantly decreased by shifting to SPS. Both types of material were ED-machinable. Hot pressed ceramics showed better cutting performance and improved surface quality in trimming operations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 38, Issue 10, August 2018, Pages 3585-3594
Journal: Journal of the European Ceramic Society - Volume 38, Issue 10, August 2018, Pages 3585-3594
نویسندگان
Ulrich Schmitt-Radloff, Frank Kern, Rainer Gadow,