کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7887390 1509790 2018 36 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved fracture toughness of laminated ZrB2-SiC-MoSi2 ceramics using SiC whisker
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Improved fracture toughness of laminated ZrB2-SiC-MoSi2 ceramics using SiC whisker
چکیده انگلیسی
In this study, SiC whisker (SiCw) was introduced to ZrB2 matrix layer of laminated ZrB2/BN ceramics to improve fracture toughness. Laminated ZrB2-SiCw/BN ceramics were prepared by tape casting and spark plasma sintering. For comparison, monolithic ZrB2-SiCw and laminated ZrB2-SiCp/BN ceramics were also prepared using the same method. The introduction of SiC whiskers increased fracture toughness of laminated ZrB2-SiCw/BN ceramics to 13.31 ± 0.33 MPa m1/2 for all samples. This was related to the multi-scale toughening mechanism, including delamination and crack deflection issued from the laminate structure at the macroscopic level, as well as whiskers bridging and pullout at the microscopic view. The R-curve behaviors of all samples revealed improved resistance to crack propagation of laminated ZrB2-SiCw/BN when compared to ZrB2-SiCp/BN and ZrB2-SiCw issued from multi-scale toughening design.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 8, 1 June 2018, Pages 8890-8897
نویسندگان
, , , , ,