Carbon films with an sp2 network structure
Carbon films with an sp2 network structure
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DOI：
10.1103/physrevb.60.10903
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发表时间：
1999-10-15
影响因子：
3.7
通讯作者：
Schultrich, B
中科院分区：
文献类型：
--
作者：
Alexandrou, I;Scheibe, HJ;Schultrich, B
石墨靶的激光电弧蒸发已用于沉积具有高硬度（45 Cpa）和弹性恢复（85%）的碳膜的存款。高分辨电子显微镜（HREM）和电子能量损失谱（EELS）随后被用来研究所得层的微观结构和结合。来自HREM的膜的结构被认为是由以各种取向堆积的平行弯曲的石墨烯片段的密集阵列组成。EELS表明薄膜主要由sp（2）键合的碳组成。结果表明，可以实现具有类富勒烯结构的碳薄膜。为了解释一种主要以sp（2）键合的材料如何能表现出如此高的硬度，提出了一个简单的模型，将优异的机械性能与观察到的结构相关联。[S0163-1829（99）00439-7]。
Laser-arc evaporation of a graphite target has been used to deposit carbon films that exhibit high hardness (45 Cpa) and elastic recovery (85%). High-resolution electron microscopy (HREM) and electron energy loss spectroscopy (EELS) were subsequently used to study the microstructure and bonding of the resultant layers. The structure of the films from HREM is seen to consist of a dense array of parallel curved graphene sheet segments packed in various orientations. EELS reveals that the films are comprised of mainly sp(2)-bonded carbon. The results suggest that a form of carbon thin film with fullerenelike structure can be realized. In order to explain how a predominantly sp(2)-bonded material can exhibit such a high hardness, a simple model is proposed to correlate the excellent mechanical properties with the observed structure. [S0163-1829(99)00439-7].