کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7887493 1509791 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on mechanical properties of hot pressing sintered mullite-ZrO2 composites with finite element method
ترجمه فارسی عنوان
مطالعه خواص مکانیکی کامپوزیت های مولتی اکسیدکربن داغ با روش های عنصر محدود
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
In this study, mullite-zirconia (ZrO2) composites were fabricated by hot pressing sintering method. The effects of sintering temperature and holding time on the microstructures, phase compositions and mechanical properties of the composites were investigated. The results indicated that the size of t-ZrO2 grain varies with sintering temperature and holding time, and the maximum flexural strength of 674.05 MPa and fracture toughness of 12.08 MPam1/2 are obtained when the sintering temperature is 1500 °C with holding times of 20 and 60 min, respectively. Finite element method was employed to analyze the relationship between grain size and mechanical properties of mullite-ZrO2 composites for the first time. The results showed that the maximum stress on mullite-ZrO2 interface increases with the growth of t-ZrO2 grain size, which enhances the generation and propagation of cracks on grain boundaries significantly and degrades the flexural strength and fracture toughness of the mullite-ZrO2 composite ceramics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 7, May 2018, Pages 7509-7514
نویسندگان
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