引用本文:孙美慧,李江文,刘文月,郭呈宇,李天怡,徐学旭.Cu、Ni元素对耐蚀高锰阻尼钢在大气环境中腐蚀行为的影响[J].中国表面工程,2024,37(2):27~40
SUN Meihui,LI Jiangwen,LIU Wenyue,GUO Chengyu,LI Tianyi,XU Xuexu.Effects of Cu and Ni on Corrosion Behavior of Corrosion-resistant High-manganese Damping Steel in Atmospheric Environment[J].China Surface Engineering,2024,37(2):27~40
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Cu、Ni元素对耐蚀高锰阻尼钢在大气环境中腐蚀行为的影响
孙美慧1, 李江文1,2, 刘文月1, 郭呈宇1, 李天怡1, 徐学旭3
1.鞍钢集团北京研究院有限公司 北京 102200;2.北京科技大学钢铁共性技术协同创新中心 北京 100038;3.中国石油大学(华东)材料科学与工程学院 青岛 266580
摘要:
高锰阻尼钢因其高强度、超低屈强比、阻尼性能良好和经济性能优异等特性,在承受较大振动和冲击的桥梁、轨道交通和军工等领域展现出广阔的应用前景。而高锰钢耐蚀性能欠佳一直是限制其快速发展的关键性因素,高锰钢耐蚀性设计及其大气腐蚀行为研究均鲜有报道。为解决高锰钢耐蚀性能欠佳问题,采用真空感应熔炼和两阶段轧制工艺制备 3 种添加不同 Cu、Ni 元素含量的耐蚀高锰阻尼钢,通过大气曝晒试验、电化学测试、SEM、XRD 和 XPS 等方法对试验材料的电化学性能、 腐蚀速率、腐蚀形貌、腐蚀产物物相及结构进行表征及分析。结果表明:相较于单独添加 Cu 元素的高锰阻尼钢,钢中添加 1.2 wt.% Cu 和 1.0 wt.% Ni 元素腐蚀电位正移近 200 mV,腐蚀电流密度降低近 50%;曝晒试验后,较高含量的 Cu 和 Ni 元素协同添加使腐蚀产物中 α-FeOOH 含量明显提高,活性较高的 MnFe2O4和 Mn2O3含量降低,耐蚀产物 NiOOH 及 CuO 含量增加。腐蚀产物颗粒均匀细小,产物层整体致密光滑,保护性能提高,其腐蚀速率相较于单独添加 Cu 元素的高锰阻尼钢降低 70%,表现出优异的耐蚀性能。所提出的高锰阻尼钢耐蚀性的成分设计方案及耐蚀机理可为未来高锰阻尼钢在桥梁中的应用提供数据支持。
关键词:  高锰阻尼钢  腐蚀行为  大气环境  X 射线光电子能谱仪(XPS)
DOI:10.11933/j.issn.1007-9289.20230531002
分类号:TG174
基金项目:国家重点研发计划(2021YFB3701701);中国博士后科学基金(2023M733875);山东博士后科学基金(SDBX2023016)
Effects of Cu and Ni on Corrosion Behavior of Corrosion-resistant High-manganese Damping Steel in Atmospheric Environment
SUN Meihui1, LI Jiangwen1,2, LIU Wenyue1, GUO Chengyu1, LI Tianyi1, XU Xuexu3
1.Ansteel Beijing Research Institute Co., Ltd., Beijing 102200 , China;2.Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100038 , China;3.School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580 , China
Abstract:
High-manganese damping steel has shown broad application prospects in fields such as bridges, rail transit, and military industry that withstand large vibrations and impacts owing to its high strength, ultralow yield ratio, good damping performance, and excellent economic performance. However, the poor corrosion resistance of high-manganese steel has always been a key factor limiting its rapid development. To address this problem, three corrosion-resistant high-manganese damping steels with different Cu and Ni contents were prepared using vacuum induction melting and two-stage rolling processes. The electrochemical properties, corrosion rate, corrosion morphology, corrosion product phase, and structure of the test materials were characterized and analyzed through atmospheric exposure tests and electrochemical testing and by using scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) methods. The research results show that compared to the high-manganese damping steel added with Cu only, the one added with Cu and Ni exhibited better electrochemical stability. The addition of 1.2 wt.% Cu and 1.0 wt.% Ni to steel resulted in a positive shift in the corrosion potential of approximately 200 mV and a decrease in the corrosion current density by approximately 50%. After the exposure experiment, the high-manganese damping steel added with Cu and Ni also exhibited better corrosion resistance. Compared to the 8Cu and 8Cu5Ni steels, the corrosion rate of 12Cu10Ni decreased by approximately 70%. Based on the distribution of elements in the three types of steel, Fe, O, Mn, Cu, and Ni were uniformly distributed in the corrosion product layer without noticeable enrichment. The main corrosion products of the three types of steel were composed of γ-FeOOH, α-FeOOH, Fe3O4, Mn3O4, and manganese iron oxide (MnFe2O4). In the corrosion product layer, Cu and Ni affected the generation of the main corrosion products, on the one hand, and existed in the form of corrosion-resistant products, such as CuO, NiOOH, and NiO, on the other hand. When Cu was added separately to the steel, the ions had sufficient diffusion channels owing to the rapid corrosion of high-manganese steel and the porous corrosion product layer. Therefore, there were fewer Cu products in the corrosion-product layer, and the steel matrix exhibited apparent local corrosion characteristics. The addition of Ni enhanced the formation of corrosion product α-FeOOH, thereby improving the stability and density of the corrosion product layer. The addition of Ni also inhibited the doping of Mn into Fe3O4, resulting in the disappearance of iron-manganese oxides and an overall improvement in the electrochemical stability of the corrosion product layer. As the density of the corrosion-product layer increased, the diffusion of various ions in the steel became difficult, and the Cu oxide content in the corrosion-product layer increased, resulting in uniform corrosion characteristics on the overall surface of the steel. The synergistic addition of higher amounts of Cu and Ni further increased the α-FeOOH content. Notably, corrosion resistant products such as NiOOH and CuO within the corrosion products showed a significant enhancement, whereas the contents of MnFe2O4 and Mn2O3, known for their higher activity, experienced a decrease. The particles of the corrosion product were uniform and small. The overall product layer was dense and smooth, which effectively isolated the erosion of corrosive media and demonstrated excellent protection. The optimization of the synergistic addition of Cu and Ni effectively suppresses the insufficient corrosion resistance of high-manganese steel, providing support data for the design and in-depth research on more corrosion-resistant high-manganese damping steel in the future and a design basis for achieving safe service of high-manganese steel in the atmospheric environment.
Key words:  high manganese damping steel  corrosion behavior  atmospheric environment  X-ray photoelectron spectroscopy (XPS)
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