کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5440775 1398238 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of processing temperature on microstructures and mechanical behaviours of reactive hot-pressed SiC(SCS-6)/Ti/ZrB2-ZrC hybrid composites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Effects of processing temperature on microstructures and mechanical behaviours of reactive hot-pressed SiC(SCS-6)/Ti/ZrB2-ZrC hybrid composites
چکیده انگلیسی
In this study, hybrid composites comprising SiC(SCS-6)/Ti composite and ZrB2-ZrC ceramics were prepared by sandwiching Ti/SiC(SCS-6)/Ti sheets and Zr + B4C powder layers, followed by reactive hot pressing (RHPing) between 1250 °C and 1400 °C. The effects of RHPing temperature on the microstructures and the mechanical behaviours of the composites were examined. For the samples prepared at 1250 °C and 1300 °C, a Ti-rich zone was observed in the matrix and around the fibres. However, for the sample prepared at 1400 °C, no Ti-rich zone was observed. In addition, the hybrid composites show noncatastrophic fracture behaviour, irrespective of RHPing temperature. Compared to the sample processed at 1400 °C, the samples processed at 1250 °C and 1300 °C exhibited higher flexural strength and greater damage tolerance. The lower strength and damage tolerance for the composite processed at 1400 °C are attributed to stronger interface bonding via significant degradation of the C-rich coating and to strength degradation of the fibres.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 36, Issue 16, December 2016, Pages 3851-3861
نویسندگان
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