Structural, mechanical and tribocorrosion behaviour in artificial seawater of CrN/AlN nano-multilayer coatings on F690 steel substrates
Structural, mechanical and tribocorrosion behaviour in artificial seawater of CrN/AlN nano-multilayer coatings on F690 steel substrates
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DOI：
10.1016/j.apsusc.2017.09.166
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发表时间：
2018-01
影响因子：
6.7
通讯作者：
Fuliang Ma;Jinlong Li;Z. Zeng;Yimin Gao
中科院分区：
文献类型：
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作者：
Fuliang Ma;Jinlong Li;Z. Zeng;Yimin Gao
利用反应磁控溅射技术在F690钢表面成功制备了CrN单层和CrN/AlN纳米多层膜。结果表明，CrN单层为(111)择优取向的面心立方结构，CrN/AlN纳米多层膜具有(200)择优取向。这种纳米多层膜的设计可以中断柱状晶的连续生长，使涂层更加致密。与CrN单层涂层相比，CrN/AlN纳米多层涂层具有更好的耐磨性和耐腐蚀性。摩擦腐蚀试验表明，F690钢与CrN单层或CrN/AlN纳米多层膜在磨损和腐蚀共同作用下的电位和电流密度的变化趋势相反，这是由于F690钢是非钝化材料，而PVD涂层是钝化材料。纳米多层结构具有良好的“封孔效果”，腐蚀性溶液很难通过涂层腐蚀衬底。
The CrN monolayer and CrN/AlN nano-multilayer coating were successfully fabricated by reactive magnetron sputtering on F690 steel. The results show that CrN monolayer exhibits a face centered cubic crystalline structure with (111) preferred orientation and CrN/AlN nano-multilayer coating has a (200) preferred orientation. This design of the nano-multilayer can interrupt the continuous growth of columnar crystals making the coating denser. The CrN/AlN nano-multilayer coating has a better wear resistance and corrosion resistance compared with the CrN monolayer coating. The tribocorrosion tests reveal that the evolution of potential and current density of F690 steel and CrN monolayer or CrN/AlN nano-multilayer coating see an opposite trend under the simultaneous action of wear and corrosion, which is attributed to that F690 steel is a non-passive material and PVD coatings is a passive material. The nano-multilayer structure has a good “Pore Sealing Effect”, and the corrosive solution is difficult to pass through the coating to corrode the substrate.