Corrosion resistance and antifouling activities of silver-doped CrN coatings deposited by magnetron sputtering
Corrosion resistance and antifouling activities of silver-doped CrN coatings deposited by magnetron sputtering
复制标题
磁控溅射镀银CrN涂层的耐蚀性和防污性能
DOI：
10.1016/j.surfcoat.2018.09.006
复制
发表时间：
2018-11-25
影响因子：
5.4
通讯作者：
Wang, Xuezhen
中科院分区：
文献类型：
--
作者：
Cai, Qun;Li, Shuxin;Wang, Xuezhen
采用磁控溅射技术在316L不锈钢表面制备了不同银含量的CrN-Ag复合涂层。对涂层在人工海水中的腐蚀性能和防污性能(包括抗藻类和抗菌性能)进行了评价，为其在海洋中的潜在应用提供了依据。结果表明，随着银含量的增加，银掺杂涂层的耐蚀性变差，说明银加速了原电池的反应，促进了腐蚀的发生。然而，在抗藻类行为上却呈现出相反的趋势。含银量为13.18at.%的涂料具有良好的抗藻性，对枯草芽孢杆菌的抗菌性能好于大肠杆菌。小球藻、新月浑藻和微囊藻在涂层表面的附着分别减少约45%、72%和%。当涂层中银含量为18.37at.%时，银的团聚抑制了银的释放和扩散，减缓了腐蚀反应，体现了对耐蚀性的积极影响和对抗藻性的负面影响。
The CrN-Ag composite coatings with various silver contents were prepared on 316L stainless steel by magnetron sputtering. The corrosion performance and antifouling properties (including anti-algae and antibacterial behaviors) of coatings in the artificial seawater were evaluated to give insight to potential marine applications. Results revealed that Ag-doped coatings exhibited worse corrosion resistance with increased silver, which indicated silver accelerated the reaction of the primary battery and promoted the occurrence of corrosion. However, opposite tendency was presented on anti-algae behavior. The coatings containing silver content of 13.18 at.% showed excellent anti-algae properties, and better antibacterial properties against Bacillus subtilis than Escherichia colt. The attachment of Chlorella, N. closterium and P. micontuturn on the surface of coating reduces by about 45%, 72% and 64%, respectively. The agglomerate of silver in the coatings with 18.37 at.% constrains its release and diffuse, which slowed down the corrosion reaction, embodying positive influence on corrosion resistance and negative effect on anti-algae behavior.