LI Xiaokun*,LIU Shuying,LIU Xin.Protection of NdFeB by Electroless Plating and Its Corrosion Behavior in Simulated Marine Atmosphere[J].Plating & Finishing,2022,(1):29-34.[doi:10.3969/j.issn.1001-3849.2022.01.005]
钕铁硼化学镀防护及在模拟海洋大气环境中的腐蚀行为
- Title:
- Protection of NdFeB by Electroless Plating and Its Corrosion Behavior in Simulated Marine Atmosphere
- 分类号:
- TQ153
- 文献标志码:
- A
- 摘要:
- 采用化学镀方法在钕铁硼表面分别制备Ni-P合金镀层、Ni-Mo-P合金镀层、Ni-P/PTFE复合镀层和Ni-Mo-P/PTFE复合镀层，并研究了不同化学镀层在模拟海洋大气环境中的腐蚀行为。结果表明：Ni-P合金镀层、Ni-Mo-P合金镀层、Ni-P/PTFE复合镀层和Ni-Mo-P/PTFE复合镀层都完整覆盖钕铁硼表面，它们的粗糙度差别不大，在模拟海洋大气环境中的腐蚀失重都低于钕铁硼的腐蚀失重，容抗弧半径增大且电荷转移电阻有不同程度的提高。与Ni-P合金镀层和Ni-Mo-P合金镀层相比，Ni-P/PTFE复合镀层和Ni-Mo-P/PTFE复合镀层具有优良的耐腐蚀性能，原因在于PTFE颗粒较均匀的沉积在镀层表面增加一道屏蔽层，也起到阻碍腐蚀介质渗透腐蚀的作用。尤其是Ni-Mo-P/PTFE复合镀层，其表面更致密，PTFE颗粒沉积更均匀，能更有效延缓腐蚀介质与钕铁硼接触，显著提高钕铁硼在模拟海洋大气环境中的耐腐蚀性能。
- Abstract:
- Ni-P alloy coating， Ni-Mo-P alloy coating， Ni-P/PTFE composite coating and Ni-Mo-P/PTFE composite coating were prepared on the surface of NdFeB by electroless plating respectively， and the corrosion behavior of different electroless coatings in simulated marine atmosphere was studied. The results showed that Ni-P alloy coating， Ni-Mo-P alloy coating， Ni-P/PTFE composite coating and Ni-Mo-P/PTFE composite coating were completely covered the surface of NdFeB， and there was little difference in their roughness. The corrosion weight loss of different electroless coatings in simulated marine atmosphere was lower than that of NdFeB， the radius of capacitive reactance arc was increased and the charge transfer resistance was increased in different degrees. Compared with Ni-P alloy coating and Ni-Mo-P alloy coating， Ni-P/PTFE composite coating and Ni-Mo-P/PTFE composite coating showed excellent corrosion resistance， the reason was that PTFE particles were evenly deposited on surface of the coating to form an additional shielding layer， which could also plays a role in preventing the erosion of corrosive media. Especially for Ni-Mo-P/PTFE composite coating， its surface was denser and PTFE particle deposited more uniform， which could more effectively delay the contact between corrosive medium and NdFeB， and then significantly improved the corrosion resistance of NdFeB in the simulated marine atmosphere
参考文献/References:
[1] 庄晨. 钕铁硼永磁材料在CuCl-EMIC离子液体中电沉积铜层的研究[D]. 杭州: 浙江大学, 2019.
[2] 邓文宇, 王朋阳, 齐丽君, 等. 钕铁硼永磁材料腐蚀机理及防护研究进展[J]. 真空, 2020, 57(5): 45-51.
Deng W Y, Wang P Y, Qi L J, et al. Research progress on corrosion mechanism and protection of NdFeB permanent magnet materials[J]. Vacuum, 2020, 57(5): 45-51 (in Chinese).
[3] Tan C, Li Q, She Z, et al. Preparation of Ni-Co alloy coating on sintered NdFeB magnet by potentiodynamic electrodeposition[J]. Materials Science and Technology, 2016, 32(5): 446-453.
[4] 宋玉, 黄涛, 陈小平, 等. 水合肼体系化学镀镍时间对钕铁硼电镀/化学镀镍层耐蚀性的影响[J]. 电镀与涂饰, 2020, 39(13): 817-822.
Song Y, Huang T, Chen X P, et al. Effect of electroless plating time in a bath with hydrazine hydrate as reductant on corrosion resistance of electroplated/electroless plated bilayered nickel coating on neodymium-iron-boron permanent magnet[J]. Electroplating & Finishing, 2020, 39(13): 817-822 (in Chinese).
[5] Chen J, Yang H Y, Xu G Q, et al. Phosphating passivation of vacuum evaporated Al/NdFeB magnets boosting high anti-corrosion performances[J]. Surface and Coatings Technology, 2020(399): 126115.
[6] 段永利, 邓文宇, 齐丽君, 等. 金属Tb晶界扩散对烧结钕铁硼磁性和耐温性的影响[J]. 真空, 2018, 55(6): 76-79.
Duan Y L, Deng W Y, Qi L J, et al. Influence of Tb grain boundary diffusion on the magnetic performance and heat resistance of sintered NdFeB magnet[J]. Vacuum, 2018, 55(6): 76-79 (in Chinese).
[7] Iacovacci V, Naselli I, Salgarella A R, et al. Stability and in vivo safety of gold, titanium nitride and parylene C coatings on NdFeB magnets implanted in muscles towards a new generation of myokinetic prosthetic limbs[J]. RSC Advances, 2021, 11(12): 6766-6775.
[8] 孙臣, 张伟, 严川伟. 前处理对烧结钕铁硼化学镀镍结合力的影响[J]. 腐蚀科学与防护技术, 2009, 21(2): 212-215.
Sun C, Zhang W, Yan C W. Effect of pretreatment on adhesion of electroless plated Ni-P coatings on sintered NdFeB permanent magnet[J]. Corrosion Science and Protection Technology, 2009, 21(2): 212-215 (in Chinese).
[9] Ma T Ym Ying H G, Yan M. Electroless Ni-Co-P coatings on sintered Nd-Fe-B magnets with improved corrosion resistance[J]. Advanced Materials Research, 2009(75): 53-56.
[10] 王勇, 张祖军. 钕铁硼磁体表面化学镀 Ni-Cu-P合金工艺及性能研究[J]. 机械工程与自动化, 2013(3): 88-91.
Wang Y, Zhang Z J. Process and performance study on electroless plating Ni-Cu-P alloy on Nd-Fe-B magnet[J]. Mechanical Engineering & Automation, 2013(3): 88-91 (in Chinese).
[11] Song L Z, Yang Z Y. Corrosion resistance of sintered NdFeB permanent magnet with Ni-P/TiO2 composite film[J]. Journal of Iron and Steel Research International, 2009, 16(3): 89-94.
[12] Chen H M, Yang D, Lin X X, et al. Investigation on the interfacial bonding strength between Ni-P-W/Al2O3 composite coatings and NdFeB matrix[J]. Applied Mechanics and Materials, 2012(217-219): 1359-1362.
[13] 林炜盛. PTFE/金属用含氟胶黏剂的制备和应用[D]. 合肥: 合肥工业大学, 2014.
[14] 付景国, 徐长旗, 朱新河, 等. 硅烷偶联剂对表面微坑复合PTFE的减摩及缓释性能影响研究[J]. 表面技术, 2020, 49(2): 178-184.
Fu J G, Xu C Q, Zhu X H, et al. Effect of the silane coupling agent on the anti-friction and sustained release properties of surface with the micro dimple filled with PTFE[J]. Surface Technology, 2020, 49(2): 178-184 (in Chinese).
[15] Wei T G, Zhang R Q, Yang H Y, et al. Microstructure, corrosion resistance and oxidation behavior of Cr-coatings on Zircaloy-4 prepared by vacuum arc plasma deposition[J]. Corrosion Science, 2019(158): 108077.
[16] Li C Y, Feng X L, Fan X L, et al. Corrosion and wear resistance of micro-arc oxidation composite coatings on magnesium alloy AZ31-the influence of inclusions of carbon spheres[J]. Advanced Engineering Materials, 2019, 21(9): 1900446.
相似文献/References:
[1]高 平.钕铁硼化学镀Ni-Mo-P镀层的形貌和耐腐蚀性能[J].电镀与精饰,2021,(4):30.[doi:10.3969/j.issn.1001-3849.2021.04.007]
GAO Ping.Morphology and Corrosion Resistance of Ni-Mo-P Coatings on NdFeB Prepared by Electroless Plating[J].Plating & Finishing,2021,(1):30.[doi:10.3969/j.issn.1001-3849.2021.04.007]
[2]杜涌涛*,王杰杰,杨 苗,等.ZrO2颗粒浓度对钕铁硼Ni-P/ZrO2复合镀层耐蚀性的影响[J].电镀与精饰,2021,(5):30.[doi:10.3969/j.issn.1001-3849.2021.05.005]
DU Yongtao*,WANG Jiejie,YANG Miao,et al.Effect of ZrO2 Particles Concentration on Corrosion Resistance of Ni-P/ZrO2 Composite Coatings on NdFeB[J].Plating & Finishing,2021,(1):30.[doi:10.3969/j.issn.1001-3849.2021.05.005]
[3]李孝坤 *,闫 凯,刘 忻.工艺参数对钕铁硼化学镀Ni-Mo-P/PTFE复合镀层耐蚀性的影响[J].电镀与精饰,2022,(3):35.[doi:10.3969/j.issn.1001-3849.2022.03.007]
LI Xiaokun *,YAN Kai,LIU Xin.Influence of Process Parameters on Corrosion Resistance of Ni-Mo-P/PTFE Composite Coatings Electroless Plated on NdFeB[J].Plating & Finishing,2022,(1):35.[doi:10.3969/j.issn.1001-3849.2022.03.007]
[4]孔丹*,罗志强,金胜然. 铜合金的表面化学镀层制备与摩擦学性能研究 [J].电镀与精饰,2022,(8):23.[doi:doi ： 10.3969/j.issn.1001-3849.2022.08.005]
KONG Dan*,LUO Zhiqiang,JIN Shengran.Preparation and Tribological Properties of Electroless Plating on Copper Alloy[J].Plating & Finishing,2022,(1):23.[doi:doi ： 10.3969/j.issn.1001-3849.2022.08.005]
备注/Memo
收稿日期： 2021-05-18 修回日期： 2021-06-10 通信作者： 李孝坤（1982－），男，硕士，讲师，主要研究方向：腐蚀与防护、化学分析检测等，email：li_kaifeng004@163.com。