کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7981955 | 1514753 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of SiC content on mechanical properties and thermal shock resistance of BN-ZrO2-SiC composites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
BN-ZrO2-SiC composites with different SiC contents have been fabricated by hot pressing to evaluate their mechanical properties and thermal shock resistance. The flexural strength increases first and then decreases with increasing SiC content. Composite incorporated with 15 vol% SiC exhibits the highest flexural strength of 306 MPa. The optimal thermal shock resistance is achieved with 20 vol% SiC and the critical temperature difference is about 700 °C. The residual flexural strength of composites heated in air decrease gradually when temperature difference is below 800 °C, and increase slightly with temperature difference ranging from 1000 °C up to 1200 °C. The increment in the thermal shock resistance is attributed to surface oxide layer at high temperature, compared with that heated in nitrogen atmosphere. The addition of SiC is favorable for forming the continuous and dense glass layer on the surface of composite, which is a benefit to improve the thermal shock resistance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 590, 10 January 2014, Pages 346-351
Journal: Materials Science and Engineering: A - Volume 590, 10 January 2014, Pages 346-351
نویسندگان
Lei Chen, Yujin Wang, Haifeng Shen, Jiancun Rao, Yu Zhou,