Effects of silicon on microstructure and corrosion resistance of diamond-like-carbon film prepared on 2024 aluminum alloy by plasma-enhanced chemical vapor deposition

被引：45

作者：

Deng, Hongyun ^{[1
]}

Chen, Dongxu ^{[1
]}

Wang, Yanan ^{[1
]}

Zhou, Yanwen ^{[1
]}

Gao, Peng ^{[2
]}

机构：

[1] Univ Sci & Technol Liaoning, Sch Met & Mat, Anshan 114051, Peoples R China

[2] Anshan Iron & Steel Res Inst, State Key Lab Marine Equipment Steel & Its Applic, AnGang Grp, Anshan, Peoples R China

来源：

关键词：

2024 aluminum alloy; Silicon doped diamond-like-carbon; Nanopores; Electrochemical impedance spectroscopy; Plasma-enhanced chemical vapor deposition; SI-INCORPORATION; DLC FILMS; NANOMECHANICAL PROPERTIES; PITTING CORROSION; STRESS; PROTECTION; COATINGS;

D O I：

10.1016/j.diamond.2020.108144

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of silicon on microstructure and corrosion resistance of diamond-like-carbon (DLC) film prepared on 2024 aluminum alloy by plasma-enhanced chemical vapor deposition were investigated. It was found that the content of silicon has significant influence on the microstructure and corrosion resistance of Si-DLC film. When the content of silicon is 0%, the exchange of charges on the surface of the film was facilitated because of more sp(2) bonds were formed within the film. The corrosion resistance of the Si-DLC film with the addition of 2% silicon was improved because of the changes in the content of sp(3) and sp(2) bonds within the film. However, with the content of silicon was increased to 10%, massive nanopores were formed within the film. The corrosion resistance of Si-DLC film with the addition of 10% silicon is decreased. The optimal addition of silicon into the DLC film in order to improve the corrosion resistance in the present work is 2%. The influence mechanism of the content of silicon on corrosion resistance of Si-DLC film and the formation mechanism of nanopores within SiDLC film are also discussed.

引用

页数：7

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