SU Ao,WANG Lei,CHEN Hui*.Study on Mixed Acid Anodic Oxidation and Chromium Free Sealing of Aluminium Lithium Alloy[J].Plating & Finishing,2022,(1):22-28.[doi:10.3969/j.issn.1001-3849.2022.01.004]
铝锂合金混合酸阳极氧化及无铬封闭研究
- Title:
- Study on Mixed Acid Anodic Oxidation and Chromium Free Sealing of Aluminium Lithium Alloy
- Keywords:
- aluminium lithium alloy; anodized with mixed acid electrolyte; corrosion resistance; chromium-free sealing
- 分类号:
- TQ153.6
- 文献标志码:
- A
- 摘要:
- 为有效提高铝锂合金的耐蚀性能,采用混合酸电解液(硫酸与柠檬酸的混合溶液)进行阳极氧化,然后对阳极氧化膜进行无铬封闭处理,并对阳极氧化膜的微观形貌、表面成分、厚度和耐蚀性能进行了分析表征。结果表明:混合酸阳极氧化后铝锂合金表面形成了均匀多孔的阳极氧化膜,主要含有Al、S和O元素,厚度为12.8 μm,其耐蚀性能好于铝锂合金。沸水封闭、锆盐封闭、镍盐封闭和铈盐封闭对阳极氧化膜的厚度几乎没有影响,但封闭后阳极氧化膜表面平整度和致密性改善,耐蚀性能明显提高。铈盐封闭过程中同时生成水合氧化铝、铈氢氧化物和铈氧化物,更好的填充覆盖了孔洞,封闭效果好于沸水封闭、锆盐封闭和镍盐封闭,因此铈盐封闭阳极氧化膜表面更平整致密,抵御腐蚀能力增强,电荷转移电阻较铝锂合金提高了超过一个数量级,腐蚀失重仅为铝锂合金的1/9,可以显著提高铝锂合金的耐蚀性能。
- Abstract:
- Aluminium lithium alloy was anodized in mixed acid electrolyte (sulfuric acid and citric acid mixed solution) and then treated with chromium-free sealing in order to effectively improve its corrosion resistance. The micromorphology and surface components of anodic oxide films were characterized and analyzed, and the thickness and corrosion resistance were also tested. The micromorphology, surface composition, thickness and corrosion resistance of anodic oxide film were analyzed and characterized. The results show that a uniform porous anodic oxide film is formed on the surface of aluminium lithium alloy after anodized in mixed acid electrolyte, which mainly contains Al, S and O elements, and the thickness is 12.8 μm. The corrosion resistance of anodic oxide film is better than that of aluminium lithium alloy. Boiling water sealing, zirconium salt sealing, nickel salt sealing and cerium salt sealing have little effect on the thickness of anodic oxide film, but the surface flatness and compactness of the anodic oxide film after sealing were improved, and the corrosion resistance was improved obviously. Hydrated alumina, cerium hydroxide and cerium oxide simultaneously generated during the process of cerium salt sealing, which could better fill and cover the holes, and the sealing effect was better than that of boiling water sealing, zirconium salt sealing and nickel salt sealing. Therefore, the surface of cerium salt sealed anodic oxide film is more smooth and compact and the corrosion resistance is enhanced. The charge transfer resistance is more than one order of magnitude higher than that of aluminium lithium alloy, and the corrosion weight loss is only 1/9 of that of aluminium lithium alloy, which can significantly improve the corrosion resistance of aluminium lithium alloy.
参考文献/References:
[1] 吴国华, 孙江伟, 张亮, 等. 铝锂合金材料研究应用现状与展望[J]. 有色金属科学与工程, 2019, 10(2): 31-46.
Wu G H, Sun J W, Zhang L, et al. Current status and prospects of research and application of aluminum-lithium alloy[J]. Nonferrous Metals Science and Engineering, 2019, 10(2): 31-46 (in Chinese).
[2] Paula L C D, Tokita S, Kadoi K, et al. Analysis of the 355 aluminium alloy microstructure for application in thixoforming[J]. Solid State Phenomena, 2019(285): 277-282.
[3] Luo C G, Zhang Y H, Li J G. Microstructure and mechanical properties of tungsten inert gas weld joints of sprayed and cast aluminium-lithium alloy[J]. Materials, 2020, 13(17): 3787.
[4] 刘湘伟, 李劲风, 张瑞丰, 等. 工艺参数对2195铝锂合金阳极氧化膜层腐蚀行为的影响[J]. 材料保护, 2020, 53(3): 107-111.
Liu X W, Li J F, Zhang R F, et al. Effect of process parameters on corrosion behavior of anodized film on 2195 Al-Li alloy[J]. Materials Protection, 2020, 53(3): 107-111 (in Chinese).
[5] 肖金涛, 陈妍, 邢明秀, 等. 工艺参数对2195铝锂合金阳极氧化膜的耐蚀性影响[J]. 中国腐蚀与防护学报, 2019, 39(5): 431-438.
Xiao J T, Chen Y, Xing M X, et al. Effect of process parameters on corrosion resistance of anodizing film on 2195 Al-Li alloy[J]. Journal of Chinese Society for Corrosion and Protection, 2019, 39(5): 431-438 (in Chinese).
[6] 颜鹏, 厉新明, 何林波, 等. 2198和5A90铝锂合金脉冲阳极氧化膜制备及耐蚀性[J]. 航空材料学报, 2017, 37(2): 13-20.
Yan P, Li X M, He L B, et al. Preparation and corrosion resistance of pulse-current anodic oxidation films of 2198 and 5A90 Al-Li alloys[J]. Journal of Aeronautical Materials, 2017, 37(2): 13-20 (in Chinese).
[7] 马宗耀, 谢发勤. 铝-锂合金阳极氧化及膜层性能的研究[J]. 电镀与环保, 2008, 28(6): 31-34.
Ma Z Y, Xie F Q. Study of anodizing Al-Li alloy and properties of the anodization film[J]. Electroplating & Pollution Control, 2008, 28(6): 31-34 (in Chinese).
[8] 韩保红, 张骐, 孙志华, 等. 前处理工艺对航空铝锂合金硫酸阳极氧化膜层性能影响[J]. 航空材料学报, 2017, 37(5): 48-54.
Han B H, Zhang Q, Sun Z H, et al. Effect of pretreatment process on properties of aerospace Al-Li alloy sulfuric acid anodic film[J]. Journal of Aeronautical Materials, 2017, 37(5): 48-54 (in Chinese).
[9] 王邈. 铝锂合金铬酸阳极化工艺适用性研究[J]. 上海涂料, 2011, 49(8): 16-18.
Wang M. Study on applicability of chromic acid anodizing process on aluminum lithium alloy[J]. Shanghai Coatings, 2011, 49(8): 16-18 (in Chinese).
[10] Fujita M, Tanaka H, Muramatsu H, et al. 采用氢氧化锂提高铝合金氧化膜的耐腐蚀性能[J]. 国外内燃机, 2015, 47(1): 58-62.
Fujita M, Tanaka H, Muramatsu H, et al. Improvement of corrosion resistance of aluminum alloy oxide film by using lithium hydroxide[J]. Foreign Internal Combustion Engine, 2015, 47(1): 58-62 (in Chinese).
[11] 朱鸿昌, 晏柳, 芦佳明, 等. 铝合金阳极氧化锆盐封闭研究[J]. 江西化工, 2020(3): 68-71.
Zhu H C, Yan L, Lu J M, et al. Sealing of aluminum alloy anodic using fluorozirconate[J]. Jiangxi Chemical Industry, 2020(3): 68-71 (in Chinese).
[12] Won J, Jeong H C, Lee J H, et al. Physicochemical modification effect on homogeneously aligned liquid crystals based on the nickel oxide thin film[J]. Journal of Nanoscience and Nanotechnology, 2019, 19(10): 6139-6143.
[13] 王英君, 刘洪雷, 王国军, 等. 新型高强稀土Al-Zn-Mg-Cu-Sc铝合金的阳极氧化及其抗腐蚀性能研究[J]. 中国腐蚀与防护学报, 2020, 40(2): 131-138.
Wang Y J, Liu H L, Wang G J, et al. Investigation of anodic film on a novel RE-containing Al-Alloy Al-Zn-Mg-Cu-Sc[J]. Journal of Chinese Society for Corrosion and Protection, 2020, 40(2): 131-138 (in Chinese).
[14] 于美, 马荣豹, 刘建华, 等. 硝酸铈封闭对2A12铝合金己二酸-硫酸阳极氧化膜耐蚀性的影响[J]. 材料工程, 2015, 43(1): 24-29.
Yu M, Ma R B, Liu J H, et al. Effects of cerous nitrate sealing on corrosion resistance of adipic-sulfuric acid anodic oxide films on 2A12 aluminum alloy[J]. Journal of Materials Engineering, 2015, 43(1): 24-29 (in Chinese).
[15] Peng S, Xu J, Li Z Y, et al. Electrochemical noise analysis of cavitation erosion corrosion resistance of NbC nanocrystalline coating in a 3.5 wt.% NaC1 solution[J]. Surface and Coatings Technology, 2021(415): 127133.
[16] Shetty A R, Hegde A C. Magnetoelectrodeposition of Ni-Mo-Cd alloy coating for improved corrosion resistance[J]. Chemical Data Collections, 2021(32): 100639.
[17] 娄燕敏, 孙健, 夏法锋. 射流电沉积Ni-SiC纳米镀层的腐蚀行为研究[J]. 兵器材料科学与工程, 2020, 43(3): 38-42.
Lou Y M, Sun J, Xia F F. Corrosion behavior of Ni-SiC nanocoating deposited by jet electrodeposition[J]. Ordnance Material Science and Engineering, 2020, 43(3): 38-42 (in Chinese).
[18] Kamalankirubaharan A M, Anderson A, Sarabanan K G, et al. Evaluation of corrosion resistance of Gd2O3/YSZ thermal barrier coating using electrochemical impedance spectroscopy[J]. Materials Today: Proceedings, 2020(33): 902-905.
[19] 李金宝, 周古昕, 杨润田, 等. 轧态Mg-Gd-Y-Zr合金显微组织及耐腐蚀性能研究[J]. 兵器材料科学与工程, 2020, 43(2): 42-47.
Li J B, Zhou G X, Yang R T, et al. Microstructure and corrosion resistance of as-rolled Mg-Gd-Y-Zr alloy[J]. Ordnance Material Science and Engineering, 2020, 43(2): 42-47 (in Chinese).
[20] Wang P, Cai D Y. Preparation of graphene-modified anticorrosion coating and study on its corrosion resistance mechanism[J]. International Journal of Photoenergy, 2020(3): 1-9.
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备注/Memo
收稿日期: 2021-08-28 修回日期: 2021-11-03 作者简介: 苏奥(1988-),硕士,讲师,主要研究方向:金属材料及制备工艺、分析检测技术等,email:suao0926@163.com。