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首页> 外文会议>Protection of materials and structures from the space environment >Survivability of Silicon-Doped Diamond-Like Carbon Films in Energetic Atomic/Molecular Oxygen Beam Environments
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Survivability of Silicon-Doped Diamond-Like Carbon Films in Energetic Atomic/Molecular Oxygen Beam Environments

机译：硅掺杂类金刚石碳膜在高能原子/分子氧束环境中的生存能力

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Volatile products were measured from two types of diamond-like carbon films under the hyperthermal atomic oxygen (AO) beam bombardment. It was clearly observed that CO and CO_2 were formed at the conventional hydrogenated DLC surface when exposed to hyperthermal AO beam. Desorption rates of CO and CO_2 are constant with AO fluence which reflects the constant erosion rate of the hydrogenated DLC. In contrast, Si-doped DLC shows decrease in amount of CO and CO_2 with increasing AO fluence. Oxidation of Si atoms at the DLC surface was detected by X-ray photoelectron spectroscopy, confirming the formation of SiO_2 film formed at the DLC surface that could prevent AO reaction with C atoms in DLC which leads to loss of DLC. Since a self-healing capability can be expected on Si-doped DLC, metal doping is a promising technology for space application of DLC.
机译：在高温原子氧（AO）束轰击下，从两种类型的类金刚石碳膜中测量挥发性产物。清楚地观察到，当暴露于高温AO光束时，常规氢化DLC表面会形成CO和CO_2。 CO和CO_2的解吸速率与AO通量一致，这反映了氢化DLC的恒定侵蚀速率。相反，掺硅的DLC随AO通量的增加显示出CO和CO_2量的减少。用X射线光电子能谱仪检测了DLC表面Si原子的氧化，证实了在DLC表面形成的SiO_2薄膜的形成可以防止AO与DLC中的C原子发生反应，从而导致DLC的损失。由于可以在掺Si的DLC上实现自我修复功能，因此金属掺杂对于DLC的空间应用是一种很有前途的技术。

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