کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10626577 | 989690 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gas pressure sintering of SiC sintered with rare-earth-(III)-oxides and their mechanical properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Gas pressure sintering of SiC sintered with rare-earth-(III)-oxides and their mechanical properties Gas pressure sintering of SiC sintered with rare-earth-(III)-oxides and their mechanical properties](/preview/png/10626577.png)
چکیده انگلیسی
The sintering behaviour of LPS-SiC and the influence of the size of the rare-earth cations on the secondary phase characteristics were investigated with different rare-earth oxide additions. In all cases, the most important sintering mechanism was found to be the solution-reprecipitation process. This fact was corroborated by TEM and EDS analyses. Post-sintering annealing resulted in devitrification of the secondary phases coupled with anisotropic grain growth due to the phase transformation from β-SiC to α-SiC. Improved fracture toughness of the annealed materials was attributed to crack deflection by the elongated grains. SEM microstructural analyses were performed in order to elucidate structure-property relationships. A comparative study in reference to the additive system Y2O3-AlN demonstrates significantly improved high-temperature properties of the Lu2O3-containing SiC ceramics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 31, Issue 5, 2005, Pages 703-711
Journal: Ceramics International - Volume 31, Issue 5, 2005, Pages 703-711
نویسندگان
Koushik Biswas, Georg Rixecker, Fritz Aldinger,