Influence of hydrogenated amorphous carbon coatings on the formation of paraffin deposits
Influence of hydrogenated amorphous carbon coatings on the formation of paraffin deposits
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DOI：
10.1016/j.surfcoat.2005.11.061
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发表时间：
2006-06
影响因子：
5.4
通讯作者：
M. Dotto;R. Martins;M. Ferreira;S. S. Camargo-S.
中科院分区：
文献类型：
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作者：
M. Dotto;R. Martins;M. Ferreira;S. S. Camargo-S.
在这项工作中，研究了石蜡沉积物在未涂层和无定形碳涂层基材上的形成。使用射频等离子体增强化学气相沉积 (rf-PECVD) 将碳基薄膜从甲烷 (CH4) 气体中沉积到硅 (Si) 和不锈钢 (SS) 基材上。通过座滴技术测量接触角来评估基材的表面自由能。通过铸造和冷指方法将石蜡沉积到基底上，并通过光学和 AFM 显微镜进行表征。结果表明石蜡沉积物的形态与基底自由能之间存在相关性。此外，沉积在 DLC 涂层基材上的石蜡总质量远低于未涂层 SS 基材的情况。这表明碳基薄膜可以用作涂层，以防止或减少石油工业中石蜡沉积物的形成。
In this work, the formation of paraffin deposits onto uncoated and amorphous carbon-coated substrates was studied. Carbon-based films were deposited onto silicon (Si) and stainless steel (SS) substrates from methane (CH4) gas using radio-frequency plasma-enhanced chemical vapor deposition (rf-PECVD). The surface free energy of substrates was evaluated by contact angle measurements by the sessile-drop technique. Paraffin was deposited onto the substrates by both casting and cold-finger methods and characterized by optical and AFM microscopies. The results indicate a correlation between the morphology of paraffin deposits with the substrate free energy. Also, the total mass of paraffin deposited on DLC-coated substrates is much lower than in the case of uncoated SS substrates. This suggests that carbon-based films can be used as coatings to prevent or reduce the formation of paraffin deposits in the petroleum industry.