期刊
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
卷 26, 期 2, 页码 61-67出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrmhm.2007.04.003
关键词
ab initio calculation; hard materials; osmium carbide
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. (C) 2007 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据