Influence of hydrogenated amorphous carbon coatings on the formation of paraffin deposits

被引：28

作者：

Dotto, M. E. R. ^{[1
]}

Martins, R. N. ^{[1
]}

Ferreira, M. ^{[1
]}

Camargo, S. S., Jr. ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, BR-21945970 Rio De Janeiro, Brazil

来源：

SURFACE & COATINGS TECHNOLOGY | 2006年 / 200卷 / 22-23期

关键词：

paraffin; amorphous carbon; surface energy; atomic force microscopy (AFM);

D O I：

10.1016/j.surfcoat.2005.11.061

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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. (c) 2005 Published by Elsevier B.V.

引用

页码：6479 / 6483

页数：5

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