Harder than diamond: Dreams and reality
Harder than diamond: Dreams and reality
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DOI：
10.1080/01418610208239596
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发表时间：
2002-01
期刊：
影响因子：
--
通讯作者：
V. Brazhkin;A. Lyapin;R. Hemley
中科院分区：
文献类型：
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作者：
V. Brazhkin;A. Lyapin;R. Hemley
分析固体各种物理性质之间的相互关系，提供了一种适用于寻找新的超硬材料的简单标准的公式。还讨论了具有关键弹性模量值的新物质的合成前景，其值接近甚至超过了金刚石。我们引入了理想硬度和理想强度的概念，它将材料的弹性特性与相应的机械特性联系起来，这些概念不那么明确地确定，并且取决于测量条件。材料纳米结构的控制使其接近理想的硬度成为可能。相互关联的物理性能趋势的制定有望为合成新类别的超硬材料提供必要的指导。
Abstract Analysis of correlations between various physical properties of solids provides a formulation of simple criteria applicable to the search for new superhard materials. The prospects for the synthesis of new substances with the key elastic moduli, whose values approach or even exceed those of diamond are also discussed. We introduce the concept of ideal hardness and strength, which relates the elastic properties of materials to the corresponding mechanical characteristics, the concepts that are less unambiguously determined and that depend on the conditions of measurements. The control of material nanostructure makes it possible to approach the ideal hardness. The formulation of trends interrelating physical properties is expected to allow an essential guidance in the synthesis of new classes of superhard materials.