کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10155441 | 1666349 | 2018 | 39 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparative evaluation of two different methods for thermal shock resistance of laminated ZrB2-SiCw/BN ceramics
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The thermal shock resistance (TSR) of laminated ZrB2-SiCw/BN ceramic was evaluated through indentation-quench and quenching-strengthening methods. It was correspondingly compared to monolithic ZrB2-SiCw ceramic. In the indentation-quench method with consideration to crack propagation on the surface layer, the critical thermal shock temperature of laminated ZrB2-SiCw/BN ceramic with surface residual tensile stress was 550â¯Â°C, which was lower than monolithic ZrB2-SiCw ceramic (600â¯Â°C). Unlike the microscopic method of crack growth measurement through indentation-quench testing, the quenching-strengthening method, which was based on the macroscopic properties of the material, mainly characterizing the residual strength subsequently to thermal shock, the critical thermal shock temperatures of the laminates and monolithic were 609â¯Â°C and 452â¯Â°C, respectively. Compared to the brittle fracture of ZrB2-SiCw ceramics, the deflection, bifurcation and delamination of the cracks as the main TSR mechanisms of the laminated ceramics, were revealed through quenching-strengthening method, which was more suitable for the TSR characterization of laminated ceramics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 16, November 2018, Pages 19686-19694
Journal: Ceramics International - Volume 44, Issue 16, November 2018, Pages 19686-19694
نویسندگان
Yuhang Bai, Mengyong Sun, Mingxing Li, Shangwu Fan, Laifei Cheng,