目的：在 LC4铝合金表面制备硬质阳极氧化膜,讨论工艺参数对膜层厚度和硬度的影响。方法对阳极氧化的时间、温度、电流密度及正负脉冲电流时间比等参数进行优化实验,通过 OM,SEM,XRD 及显微硬度计等对制备的氧化膜层的厚度、硬度、形貌等进行研究。结果工艺优化后的参数为：温度-2~0℃,正脉冲电流密度4 A/ dm2,负脉冲电流密度1 A/ dm2,正负脉冲电流时间比6：1,氧化时间50 min。得到由一系列直径约为50 nm 的管状单元结构组成的氧化膜,其厚度为36μm,硬度为420HV。结论制备的阳极氧化膜具有致密的组织结构和高的硬度值。
Objective The hard anodic oxidation films were prepared on the surface of the LC4 aluminum alloy and the effects of different parameters on the thickness and hardness of the films were discussed. Methods By optimizing parameters of the anodic ox-idation time, temperature, current density and the positive and negative pulse time ratio, the thickness, hardness and microstruc-ture of the films were studied by means of OM, SEM, XRD, and hardness tester. Results The optimized parameters were: a tem-perature of -2 ~ 0 ℃ , a positive pulse current density of 4 A/ dm2 , a negative pulse current density of 1 A/ dm2 , a positive and negative pulse current time ratio of 6 : 1, and an oxidation time of 50 min. The structure of the oxide film on LC4 aluminum alloy was composed of a series of tubular cells with a diameter of 50 nm, the thickness of anodic oxidation film was 36 μm, and the hard-ness was 420HV. Conclusion The anodic oxidation film had fine structure and high hardness.
参考文献
| [1] | 陈岁元,王静,梁京,刘常升.LC4表面纳米SiC和PTFE双颗粒复合阳极氧化膜的制备[J].东北大学学报（自然科学版）,2013(03):352-355. |
| [2] | 王彬,苏艳.铝合金大气腐蚀行为及其防腐措施研究进展[J].装备环境工程,2012(02):64-68. |
| [3] | 纪红,李永丰.铝合金阳极氧化膜耐磨性测试的研究[J].电镀与精饰,2013(01):38-40. |
| [4] | AERTS T,DIMOGERONTAKIS T,DE G I,et al . Influence of the Anodizing Temperature on the Porosity and the Me-chanical Properties of the Porous Anodic Oxide Film[J].Surface and Coatings Technology,2007,201 |
| [5] | 郑丽,魏晓伟,罗松.铝基体对阳极氧化膜的影响[J].表面技术,2013(01):39-41. |
| [6] | CHEN S Y,KANG C,WANG J,et al. Synthesis of Anodi-zing Composite Films Containing Superfine Al2 O3 and PTFE Particles on Al Alloys[J]. Applied Surface Science,2010, 256(22):6518-6525.,2010. |
| [7] | 张栋,张文静,乐永康,李炼.铝合金表面阳极氧化膜的制备及其摩擦性能[J].材料保护,2009(03):9-11,14. |
| [8] | 陈岁元,杨永泽,梁京,刘常升.铝合金表面高耐磨自润滑硬质阳极氧化膜的制备[J].东北大学学报（自然科学版）,2010(12):1721-1724. |
| [9] | MA Song-jiang,LUO Peng,ZHOU Hai-hui,FU Chao-peng,KUANG Ya-fei.Preparation of anodic films on 2024 aluminum alloy in boric acid-containing mixed electrolyte[J].中国有色金属学会会刊（英文版）,2008(04):825-830. |
| [10] | SANTOS A,FORMENTIN P,FERRE-BORRULL J,et al .Nanoporous Anodic Alumina Obtained without Protective Oxide Layer by Hard Anodization[J].Materials Letters,2012,67(1):296-299.,2012. |
| [11] | WEI Xiao-wei,CHEN Chao-yin . Influence of Oxidation Heat on Hard Anodic Film of Aluminum Alloy[J].Transaction of Nonferrous Metals Society of China(English Edition),2012,22(11):2707-2712.,2012. |
| [12] | ZHANG W J,ZHANG D,LE Y K,et al . Fabrication of Sur-face Self-lubricating Composites of Aluminum Alloy[J].Applied Surface Science,2008,255(2):2671-2674.,2008. |
| [13] | 刘莉,周英杰,赵冬梅. 双脉冲电源在铝合金硬质阳极氧化中的应用研究[J]. 涂装与电镀,2011(6):28-30. LIU Li, ZHOU Ying-jie, ZHAO Dong-mei. Application of Double Pulse Power Supply in the Hard Anodic Oxidation of Aluminum Alloy[J]. Coating and Electroplating,2011(6):28-30.,2011. |
| [14] | 钱建才,李兵,敖辽辉,邹洪庆.2A12铝合金表面聚苯胺/阳极氧化膜复合层电化学性能研究[J].表面技术,2009(05):20-22,89. |
| [15] | 黄燕滨,仲流石,宋高伟,李晓明.阳极氧化在铝合金表面粘接技术中的应用综述[J].装备环境工程,2012(03):71-74. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%