کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7887026 | 1509787 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of chromium additive on sintering and oxidation behavior of HfB2-SiC ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of chromium additive on sintering and oxidation behavior of HfB2-SiC ceramics Effect of chromium additive on sintering and oxidation behavior of HfB2-SiC ceramics](/preview/png/7887026.png)
چکیده انگلیسی
The effect of chromium admixture on the processes in the HfB2-SiC ceramic powder system during its pressureless sintering at 1600â¯Â°C was studied. It was shown that an increase in chromium content from 0% to 15.5% in the HfB2-SiC ceramic powder mixture leads to a continuous increase in its relative density up to 90%. A transient liquid phase Cr-Si-C-B is formed at 1600â¯Â°C, and it promotes intense sintering of HfB2 and SiC powders. The oxidation resistance of HfB2-SiC-Cr ceramics was studied in static air at 1000-1500â¯Â°C. It was shown that the oxidation resistance is greatly improved due to a decrease in the porosity of the sintered ceramic system because of chromium additive. The presence of chromium oxide in the formed surface glassy layer can also lead to the increase in the oxidation resistance. These results suggest that chromium can be considered as a promising sintering additive for HfB2-SiC and similar systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 11, 1 August 2018, Pages 12451-12457
Journal: Ceramics International - Volume 44, Issue 11, 1 August 2018, Pages 12451-12457
نویسندگان
D. Bannykh, A. Utkin, N. Baklanova,