LING Fuping,Preparation of Oxalic Acid Anodic Oxidation Film on 2099 Aluminum-Lithium Alloy and Chrome-Free Sealing Treatment[J].Plating & Finishing,2021,(9):45-50.[doi:10.3969/j.issn.1001-3849.2021.09.008]
铝锂合金表面制备草酸阳极氧化膜及无铬封孔处理
- Title:
- Preparation of Oxalic Acid Anodic Oxidation Film on 2099 Aluminum-Lithium Alloy and Chrome-Free Sealing Treatment
- 文献标志码:
- A
- 摘要:
- 为有效提高2099铝锂合金的耐腐蚀性能,在其表面制备草酸阳极氧化膜,并对氧化膜进行沸水封孔和镍盐封孔处理。表征与测试结果表明:草酸氧化膜完整覆盖了铝锂合金表面,且经过沸水封孔和镍盐封孔后氧化膜的微观形貌发生显著变化,镍盐封孔氧化膜较平整致密,孔隙率更低。沸水封孔和镍盐封孔对氧化膜的厚度基本没有影响,但是封孔后氧化膜的耐腐蚀性能显著提高。相比于沸水封孔,镍盐封孔起到双重封孔效果,能更好的填充封孔氧化膜的孔洞,所以镍盐封孔氧化膜的耐腐蚀性能更好,其电荷转移电阻和低频区间的阻抗模值(|Z|0.01 Hz)分别达到7.28×103 Ω·cm2、1.01×104 Ω·cm2,单位面积的腐蚀失重仅为0.49 g/m2。草酸阳极氧化后进行镍盐封孔,能更有效提高铝锂合金的耐腐蚀性能。
- Abstract:
- Oxalic acid anodic oxidation film was prepared the surface of 2099 aluminum-lithium alloy in order to improve its corrosion resistance, and then the oxidation film was sealed with boiling water and nickel salt respectively. The characterization and test results showed that the oxalic acid oxidation film completely covered the surface of aluminum-lithium alloy, and the microstructure of the oxidation film changed significantly after sealing with boiling water and nickel salt. The nickel salt sealed oxidation film was smooth and compact, and the porosity was lower. Boiling water sealing and nickel salt sealing have little effect on the thickness of oxidation film, but the corrosion resistance of oxidation film was significantly improved after sealing. Compared with boiling water sealing, nickel salt sealing play a double-sealing effect and it can better fill the holes of oxidation film, so the corrosion resistance of nickel salt sealed oxidation film was better, the charge transfer resistance and impedance modulus at low frequency range (|Z|0.01 Hz) reached 7.28×103 Ω·cm2 and 1.01×104 Ω·cm2 respectively, and the corrosion weight loss per unit area was 0.49 g/m2. Oxalic acid anodic oxidation and then sealed with nickel salt can effectively improve the corrosion resistance of aluminum-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] Chen G Q, Yin Q X, Zhang G, et al. Underlying causes of poor mechanical properties of aluminum-lithium alloy electron beam welded joints[J]. Journal of Manufacturing Processes, 2020(50): 216-223.
[3] 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).
[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] 李文, 朱彦海, 白雪飘, 等. 2060铝锂合金在3种溶液体系中所得阳极氧化膜层的性能[J]. 电镀与涂饰, 2018, 37(11): 492-496.
Li W, Zhu Y H, Bai X P, et al. Properties of anodic oxidation coatings prepared on 2060 aluminum-lithium alloys in three electrolytes[J]. Electroplating & Finishing, 2018, 37(11): 492-496 (in Chinese).
[6] 巩校良, 金玉楠, 李昊, 等. 氧化参数对2196铝锂合金阳极氧化膜厚度和耐蚀性的影响[J]. 沈阳航空航天大学学报, 2018, 35(4):67-76.
Gong X L, Jin Y N, Li H, et al. Effects of oxidation parameters on the thickness and corrosion resistance of anodizing film on 2196 aluminum lithium alloy[J]. Journal of Shenyang Aerospace ace University, 2018, 35(4): 67-76 (in Chinese).
[7] Gadhari P, Sahoo P. Effect of process parameters on corrosion resistance of Ni-P-Al2O3 composite coatings using electrochemical impedance spectroscopy[J]. Portugaliae Electrochimica Acta, 2015, 33(1): 49-68.
[8] Chaabani A, Aouadi S, Souissi N, et al. Electro-chemical impedance spectral (EIS) study of patinated bronze corrosion in sulfate media: experimental design approach[J]. Journal of Materials Science and Chemical Engineering, 2017, 5(10): 44-54.
[9] Yu P, Lian Z X, Xu J K, et al. Slippery liquid infused porous surfaces with corrosion resistance potential on aluminum alloy[J]. RSC Advances, 2021, 11(2): 847-855.
[10] 刘志远, 王吉平. 纳米Al2O3颗粒掺杂的锡基复合镀层的制备及耐蚀性研究[J]. 电镀与精饰, 2020, 42(11): 1-4.
Liu Z Y, Wang J P. Preparation and corrosion resistance of tin-based composite coating doped with nano-Al2O3 particles[J]. Plating and Finishing, 2020, 42(11): 1-4 (in Chinese).
[11] 王玲玲, 张元华, 赵江招, 等. 复合封孔处理对汽车用5052铝合金草酸氧化膜性能的影响[J]. 电镀与精饰, 2020, 42(6): 8-12.
Wang L L, Zhang Y H, Zhao J Z, et al. Effect of compound sealing treatment on performances of oxalic acid oxide film on 5052 aluminum alloy for automobile[J]. Plating & Finishing, 2020, 42(6): 8-12 (in Chinese).
[12] 张晓东, 丰少伟, 陈宇, 等. 电化学法制备铜基超疏水结构及其耐蚀性能研究[J]. 表面技术, 2019, 48(11): 327-332.
Zhang X D, Feng S W, Chen Y, et al. Fabrication of copper-based superhydrophobic structure by electrochemical method and its corrosion resistance[J]. Surface Technology, 2019, 48(11): 327-332 (in Chinese).
[13] Marzo F F, Alberro M, Manso A P, et al. Evaluation of the corrosion resistance of Ni(P)Cr coatings for bipolar plates by electrochemical impedance spectroscopy[J]. International Journal of Hydrogen Energy, 2020, 45(40): 20632-20646.
[14] Zhang B B, Wang J, Zhang J. One-pot fluorine-free superhydrophobic surface towards corrosion resistance and water droplet bouncing[J]. Materials and Corrosion, 2020, 71(12): 2011-2020.
备注/Memo
收稿日期: 2021-02-27;修回日期: 2021-04-11
作者简介: 凌付平(1983-),男,硕士,实验师,高级工程师,email:teacher_ling88@126.com。
基金项目: 江苏省高职院校青年教师企业实践培训资助项目(2020QYSJPX191),2019年度江苏航运职业技术学院科技类立项重点项目(HYKY/2019A1)