| 镍铝青铜9442#合金及其冷喷涂涂层磨蚀行为 |
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| 引用本文： | 孙晓峰,陈正涵,李占明,黄元林,史玉鹏. 镍铝青铜9442#合金及其冷喷涂涂层磨蚀行为[J]. 稀有金属材料与工程, 2018, 47(11): 3493-3498 |
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| 作者姓名： | 孙晓峰 陈正涵 李占明 黄元林 史玉鹏 |
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| 作者单位： | 装甲兵工程学院 装备维修与再制造工程系,装甲兵工程学院 装备维修与再制造工程系,装甲兵工程学院 装备维修与再制造工程系,装甲兵工程学院 装备维修与再制造工程系,装甲兵工程学院 装备维修与再制造工程系 |
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| 摘 要： | 采用冷喷涂技术在镍铝青铜9442合金上制备了较为致密，厚度约300μm的镍铝青铜涂层，使用SEM、XRD、XPS、电化学工作站、磨蚀试验机观察并测试了镍铝青铜合金与涂层的组织形貌、电化学行为与磨蚀性能。结果表明：电化学腐蚀后基体发生了晶间腐蚀和选相腐蚀，涂层被腐蚀后颗粒上出现微孔和裂纹；磨蚀过程中存在着摩擦与钝化的协同作用以及摩擦促进阳极溶解的过程；相比于静态条件下，涂层与基体在磨蚀条件下测得的自腐蚀电位有大幅度下降，自腐蚀电流均提高了一个数量级，涂层与基体耐腐蚀性能变差；相比于干摩擦过程，磨蚀过程中涂层与基体的摩擦系数均有较大提高，减磨性能变差。
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| 关 键 词： | 镍铝青铜 冷喷涂 电化学 磨蚀 |
| 收稿时间： | 2017-01-19 |
| 修稿时间： | 2017-05-30 |
Tribocorrosion behavior of nickel aluminum bronze(NAB) 9442# alloy and its cold spray coating |
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| SUN Xiaofeng,CHEN Zhenghan,LI Zhanming,HUANG Yuanlin and SHI Yupeng. Tribocorrosion behavior of nickel aluminum bronze(NAB) 9442# alloy and its cold spray coating[J]. Rare Metal Materials and Engineering, 2018, 47(11): 3493-3498 |
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| Authors: | SUN Xiaofeng CHEN Zhenghan LI Zhanming HUANG Yuanlin SHI Yupeng |
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| Affiliation: | Department of Equipment Maintenance and Remanufacturing,Academy of Armored Forces Engineering,Department of Equipment Maintenance and Remanufacturing,Academy of Armored Forces Engineering,Department of Equipment Maintenance and Remanufacturing,Academy of Armored Forces Engineering,Department of Equipment Maintenance and Remanufacturing,Academy of Armored Forces Engineering,Department of Equipment Maintenance and Remanufacturing,Academy of Armored Forces Engineering |
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| Abstract: | Nickel aluminum bronze coating was deposited by cold spray technology on the nickel aluminum bronze 9442# substrate. Microstructure, electrochemical behavior and tribocorrosion behavior were observed and tested by SEM, OM, XRD, XPS, electrochemical working station and abrasion machine. The results showed that intergranular corrosion and optional corrosion took place in electrochemical corrosion process, microspore and cracks appeared on coating after electrochemical corrosion; tribocorrosion process consisted of competition between friction and passivation and promotion of anodic dissolution by friction; compared with static state, Ecorrof coating and substrate under tribocorrosion condition drastically decreased, Icorrof coating and substrate increased an order of magnitude, corrosion resistance of coating and substrate became worse; compared with dry friction, friction coefficient of coating and substrate increased drastically, wear resistance of coating and substrate became worse. |
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| Keywords: | nickel aluminum bronze cold spray electrochemical tribocorrosion |
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