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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials >Raman study of carbon clusters in W-C thin films
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Raman study of carbon clusters in W-C thin films

机译：W-C薄膜中碳簇的拉曼研究

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A dispersion of nanocrystalline tungsten carbides in an amorphous carbon (a-C) matrix blends the hardness and thermal stability of carbides with the low-friction coefficient of a-C to form a superior coating. A dc-reactive (Ar + C_6H_6) magnetron sputtering of tungsten was used to produce tungsten-carbon films with variable fraction of incorporated unreacted carbon. Raman spectroscopy was used to study the carbon phase in these films, and the nanoindentation measurements were employed for their mechanical characterization. All Raman spectra indicate occurrence of the graphitic carbon, characterized by two peaks, one related to graphite mode (G-line), and another which is due to disorder (D-line). It is concluded that the enhancement of graphitic carbon fraction phase in the films is effected through the increase in concentration of the presumably uniformly distributed carbon clusters less than 1 run in size.
机译：纳米晶碳化钨在无定形碳（a-C）基质中的分散体将碳化物的硬度和热稳定性与a-C的低摩擦系数混合在一起，形成了优异的涂层。钨的直流反应（Ar + C_6H_6）磁控溅射用于生产钨碳膜，其中掺入的未反应碳的含量可变。拉曼光谱法用于研究这些薄膜中的碳相，并采用纳米压痕法对其力学性能进行表征。所有拉曼光谱都表明存在石墨碳，其特征在于两个峰，一个峰与石墨模式有关（G线），另一个峰是由无序引起的（D线）。可以得出结论，薄膜中石墨碳分数相的增强是通过增加大小均匀分布的碳簇的浓度来实现的，碳簇的大小小于1nm。

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