کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10626596 989694 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication and oxidation behavior of LaB6-ZrB2 composites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Fabrication and oxidation behavior of LaB6-ZrB2 composites
چکیده انگلیسی
LaB6-ZrB2 eutectic composites were sintered by hot pressing. The oxidation behavior of LaB6-ZrB2 eutectic composites was studied in the temperature range of 600-1300 °C. It was shown that the sample weight increased with increasing oxidation temperature and prolonging holding time. The rate of weight change was described by kp=6.24×10−4exp(−38,940/RT) g2/m2 s, but it changed according to the change of oxidation time at 1200 °C. Weight gain was evident in less than 1 h, but it slowed down subsequently due to the evaporation of B2O3. The rate of weight change increased abruptly at 1300 °C. The oxidation resistance of LaB6-ZrB2 composites was higher than that of monolithic LaB6.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 31, Issue 1, 2005, Pages 15-19
نویسندگان
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