کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5437724 1398177 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Oxidation behaviors of ZrB2-SiC binary composites above 2000 °C
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Oxidation behaviors of ZrB2-SiC binary composites above 2000 °C
چکیده انگلیسی
Rapid oxidation testing for monolithic ZrB2 and ZrB2-SiC binary composites with different SiC contents (0-30 vol%) was performed using an electric heating system above 2000 °C. The system used in this study achieved the high heating rate of 250 °C/s. The experimental results showed that the morphologies of the oxidized specimens depended strongly on the SiC content. The formation mechanism of SiC-depleted layers beneath the surface scale above 2000 °C differed completely from that below 2000 °C. Although the holding time was below 10 s, SiC-depleted layers were formed because the oxygen partial pressure of the air atmosphere was not enough to form SiO2 by the oxidation of SiC. It was determined that ZrB2-20 vol% SiC showed the best oxidation resistance above 2000 °C at high heating rates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 11, 1 August 2017, Pages 8081-8088
نویسندگان
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