Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering , Chinese Academy of Sciences , Ningbo 315201 , China.
University of Chinese Academy of Sciences , Beijing 100049 , China.
ACS Appl Mater Interfaces. 2018 Apr 18;10(15):13187-13198. doi: 10.1021/acsami.8b00628. Epub 2018 Apr 9.
The corrosion and tribology are all closely related to the interface/surface of materials, which are extremely important for the mechanical components used in harsh marine environments. In this work, we fabricated Cr/graphite-like carbon (GLC) multilayered films with different modulation periods on the 316L stainless steels by direct current magnetron sputtering. Tribocorrosion tests in artificial seawater show that the tribocorrosion resistance of the Cr/GLC films is improved as the modulation period decreases from 1000 to 333 nm and then drastically drops with further decreasing to 250 nm. By taking a top-layer thickening strategy for the Cr/GLC film with 250 nm modulation period, the tribocorrosion performance is significantly enhanced. The corresponded mechanisms are discussed in terms of the film structure and electrochemical corrosion behavior.
腐蚀和摩擦学都与材料的界面/表面密切相关，这对于在恶劣海洋环境中使用的机械部件极其重要。在这项工作中，我们通过直流磁控溅射在 316L 不锈钢上制备了具有不同调制周期的 Cr/类石墨碳（GLC）多层膜。在人造海水中的摩擦腐蚀试验表明，随着调制周期从 1000nm 降低到 333nm，Cr/GLC 膜的耐摩擦腐蚀性能得到提高，然后随着进一步降低到 250nm 而急剧下降。通过对调制周期为 250nm 的 Cr/GLC 膜采取顶层增厚策略，摩擦腐蚀性能得到显著提高。根据薄膜结构和电化学腐蚀行为讨论了相应的机理。
