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采用感应耦合等离子体源 (ICPS)成功地实现了化学气相沉积硬质类金刚石 (DLC)膜 ,并考察了基片负偏压对类金刚石膜沉积过程和薄膜性质的影响。薄膜的微观形貌、显微硬度、沉积速率以及结构成分分析表明感应耦合等离子体源适于制备硬质类金刚石膜 ,并且在相对较低的基片负偏压条件下就可以获得高硬度的类金刚石膜。基片负偏压对类金刚石膜化学气相沉积过程和薄膜性质都有显著影响。 相似文献
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At the ambient temperature and pressure a glow discharge plasma was used as a new approach for the coupling of methane with the newly-developed rotary multidentate helix electrode. In the presence of hydrogen, the effects of the input peak voltages and gas flow rates on methane conversion, C2 single pass yield and selectivity were investigated, and then the results were compared with those from the three-disc multidentate electrode. This demonstrated, on an experimental scale, that the rotary multidentate helix electrode was better than the multidentate three-disc electrode as there was little accumulation of coke, and the C2 yield per pass was 69.85% and C2 selectivity over 99.14% with 70.46% methane conversion at an input peak voltage of 2300 V and 60 ml/min gas flow rate. 相似文献
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离子注入Cr、Mo、Al对碳钢缝隙腐蚀行为的影响 总被引:2,自引:0,他引:2
采用电化学测试技术研究了离子注入Cr、Mo、Al对碳钢在海水中缝隙腐蚀行为的影响。结果表明,Cr、Mo复合离子注入表面降低缝隙腐蚀率,提高ER,显著改善了耐缝隙腐蚀性能,该效果优于Cr离子单独注入表面。Al离子注入表面使ER变负,耐缝隙腐蚀性能变劣。 相似文献
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在石英钟罩式微波等离子体化学气相沉积实验装置中研究了基片位置对金刚石薄膜沉积质量的影响。扫描电子显微镜显微形貌观察和激光喇曼谱分析表明 ,对微波等离子体化学气相沉积制备金刚石薄膜而言 ,基片位置处于近等离子体球下游区域将有利于改善金刚石薄膜沉积质量。 相似文献