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A new superhard material: Osmium diboride OsB2

机译:一种新的超硬材料:二硼化O OsB2

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Superhard materials have many industrial applications, wherever resistance to abrasion and wear are important. The synthesis of new superhard materials is one of the great challenges to scientists. We re-examined the phase diagram of the binary osmium-boron system and confirmed the existence of two hexagonal phases, OsB1.1, Os2B3, and an orthorhombic phase, OsB2. Almost nothing is known about the physical properties of osmium borides. Microhardness measurements show that OsB2 is extremely hard. Ab initio calculations show that this is due to formation of covalent bonds between boron atoms. OsB2 is also a low compressibility material. It can be used as hard coating. (c) 2006 Elsevier Ltd. All rights reserved.
机译:在耐磨性很重要的地方,超硬材料都有许多工业应用。新的超硬材料的合成是科学家的巨大挑战之一。我们重新检查了二元硼系统的相图,并确认了存在两个六方相OsB1.1,Os2B3和正交相OsB2。关于硼化the的物理性质几乎一无所知。显微硬度测量表明,OsB2非常坚硬。从头算计算表明,这是由于硼原子之间形成了共价键。 OsB2也是一种低压缩性材料。可用作硬涂层。 (c)2006 Elsevier Ltd.保留所有权利。

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