کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5468204 | 1518925 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Decomposition of solid alumina in the presence of carbon in vacuum
ترجمه فارسی عنوان
تجزیه آلومینای جامد در حضور کربن در خلاء
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
چکیده انگلیسی
The decomposition of solid Al2O3 in the presence of C was researched at 1873 K-2073 K in vacuum, using α-Al2O3 powders as the raw materials and the graphite crucible as C source. There was no direct contact between the Al2O3 and the C. The results showed that the Al2O3 decomposed into gaseous species, and the C making up the graphite crucible was reacted to form CO. The coupled reaction was proposed: Al2O3 decomposed into gaseous Al-containing species (mainly Al and Al2O) and O2, and then C reacted with O2 to form CO to maintain low O2 partial pressure, making the decomposition of solid Al2O3 in vacuum possible. With a decrease in temperature, the gaseous products Al, Al2O and CO formed the condensates containing a lot of fibrous materials. The condensates mainly consisted of Al4O4C, Al4C3, Al2O3 and Al, and the content of Al4O4C was the highest.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 145, November 2017, Pages 169-173
Journal: Vacuum - Volume 145, November 2017, Pages 169-173
نویسندگان
Yuebin Feng, Hailan Hou, Baomin Yang, Bin Yang, Futing Zi,