当前位置: X-MOL 学术Surf. Coat. Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Ultra-low-power preparation of multilayer nanocrystalline NiCo binary alloy coating by electrochemical additive manufacturing
Surface & Coatings Technology ( IF 5.4 ) Pub Date : 2020-09-09 , DOI: 10.1016/j.surfcoat.2020.126404
Fan Zhang , Zhengjun Yao , Oleksandr Moliar , Zelei Zhang , Xuewei Tao

Using the principle of electrochemical additive manufacturing (ECAM), a nanocrystalline Nisingle bondCo binary alloy coating was prepared on the surface of the steel substrate. This study shows the pulse-shaped current-time curve of ECAM during the coating preparation process, and the nanocrystalline Nisingle bondCo coating has a regular multilayer structure. At the same time, the ECAM method can effectively limit the growth time of the crystal nucleus and prepare nanocrystalline Nisingle bondCo alloy coatings with ultra-low energy consumption (5.75 × 10−3 W). Besides, as the content of Co in the coating increases, the Nisingle bondCo alloy coating changes from an FCC single-phase structure to an FCC + HCP multi-phase structure. Finally, through the performance test of the nanocrystalline Nisingle bondCo coating, it is concluded that as the content of Co in the coating increases, the hardness of the coating increases, and the coating surface has a certain degree of hydrophobicity (100°–114°). The electrochemical corrosion test shows that the Nisingle bondCo coating has better corrosion resistance than the steel substrate. As the content of Co in the coating increases, the corrosion current density of the Nisingle bondCo coating increases from 9 μA/cm2 to 32 μA/cm2.



中文翻译:

单键电化学增材制造超低功率制备多层纳米晶Ni Co二元合金涂层

使用电化学增材制造(ECAM)原理单键,在钢基底表面上制备了纳米晶Ni Co二元合金涂层。这项研究显示了在涂层制备过程中ECAM的脉冲状电流-时间曲线,并且纳米晶Ni 单键Co涂层具有规则的多层结构。同时,ECAM方法可以有效地限制晶核的生长时间,并制备单键具有超低能耗(5.75×10 -3  W)的纳米晶Ni Co合金涂层。此外,随着涂层中Co含量的增加,Ni 单键Co合金涂层从FCC单相结构变为FCC + HCP多相结构。最后,通过纳米晶镍的性能测试单键得出结论,Co涂层随着涂层中Co含量的增加,涂层的硬度也增加,并且涂层表面具有一定程度的疏水性(100°–114°)。电化学腐蚀测试表明,Ni 单键Co涂层比钢基材具有更好的耐腐蚀性。随着涂层中Co含量的增加,Ni 单键Co涂层的腐蚀电流密度从9μA/ cm 2增加到32μA/ cm 2

更新日期:2020-09-12
down
wechat
bug