کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1604531 | 1516013 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ab initio investigation of osmium carbide
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Osmium carbide has been synthesized by Kempter and Nadler 46 years ago. According to the authors, OsC crystallizes in WC-type structure and has a hardness equal to 2000 kg mm−2. Up to date, almost nothing is known about the physical properties of this carbide. We studied electronic, elastic, plastic and mechanical properties of this carbide using an approach based on the density-functional theory. We found that the work of the above mentioned authors is sound. The calculated lattice parameters are in good agreement with that given by Kempter and Nadler and a rough estimate also showed that the measured hardness is reasonable. However, we found that the hexagonal structure of osmium carbide is unstable.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 26, Issue 2, March 2008, Pages 61–67
Journal: International Journal of Refractory Metals and Hard Materials - Volume 26, Issue 2, March 2008, Pages 61–67
نویسندگان
M. Zemzemi, M. Hebbache,