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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Erosion of a-C:H films deposited on W, Mo, and stainless steel under interaction with air glow discharge
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Erosion of a-C:H films deposited on W, Mo, and stainless steel under interaction with air glow discharge

机译:在与空气辉光放电相互作用下沉积在W,Mo和不锈钢上的a-C:H膜的腐蚀

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摘要

An air direct current glow discharge with a hollow cathode was used as source of chemically active oxygen for selective removal of amorphous hydrogenated (a-C:H) films deposited on W, Mo, and stainless steel. The films were removed both directly in the discharge and afterglow region. The film erosion rates depend on the sample position relatively to plasma and decrease in the order: hollow cathode, positive column, afterglow region. It was shown that primary (1-3 nm) continuous amorphous and secondary (1-30 nm) island-like oxide films were formed on the metal surfaces after removal of the a-C:H films. Polycrystalline island-like oxide films were generated due to recrystallization of the primary films. Material oxidation suppression was caused by reactions of oxygen ion neutralization and atomic oxygen recombination on metals.
机译:具有空心阴极的空气直流辉光放电用作化学活性氧的来源,用于选择性去除沉积在W,Mo和不锈钢上的非晶态氢化(a-C:H)膜。在放电区和余辉区都直接去除了薄膜。薄膜腐蚀速率取决于样品相对于等离子体的位置,并依次降低:空心阴极,正极柱,余辉区。结果表明,在去除a-C:H膜后,在金属表面形成了一层(1-3 nm)连续的非晶态和一层(1-30 nm)岛状的氧化膜。由于初级膜的再结晶,产生了多晶岛状氧化物膜。物质的氧化抑制是由金属上的氧离子中和和原子氧重组反应引起的。

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