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[1]李 博*.2A12铝合金硫酸阳极化膜黑斑原因分析及改进方法[J].电镀与精饰,2020,(2):44-46.[doi:10.3969/j.issn.1001-3849.2020.02.009]
　LI Bo*.Cause Analysis and Quality Improvement of Black Patches of Sulfuric Acid Anodic Coating on 2A12 Aluminum Alloy[J].Plating & Finishing,2020,(2):44-46.[doi:10.3969/j.issn.1001-3849.2020.02.009]
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2A12铝合金硫酸阳极化膜黑斑原因分析及改进方法

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG] 卷: 期数: 2020年2 页码: 44-46 栏目: 出版日期: 2020-02-15
Title:
Cause Analysis and Quality Improvement of Black Patches of Sulfuric Acid Anodic Coating on 2A12 Aluminum Alloy
作者:
李 博*
中航飞机起落架有限责任公司，陕西 汉中 723200
Author(s):
LI Bo*
AVIC Landing Gear Manufacturing Corporation, Hanzhong 723200, China
关键词:
2A12铝合金; 硫酸阳极氧化; 黑色斑点; Cu2+杂质; 方法
Keywords:
2A12 aluminum alloy;  sulfuric acid anodic oxidation;  black patches;  Cu2+ impurities;  method
DOI:
10.3969/j.issn.1001-3849.2020.02.009
文献标志码:
A
摘要:
针对2A12铝合金零件经硫酸阳极化后膜层存在黑斑或黑点现象，介绍了硫酸阳极氧化工艺流程、槽液成分、氧化参数及操作要点。通过分析影响2A12铝合金硫酸阳极氧化的主要因素，从零件预处理质量、工艺参数的选择、槽液日常维护和Cu2+、Al3+和Cl-等杂质的处理及加工过程中零件的装挂等多方面提出改进、优化，使硫酸阳极化膜层出现黑点或黑斑的现象得以彻底消除。
Abstract:
Aiming at the phenomenon of black patches or spots existing in the coatings after anodizing with sulfuric acid of 2A12 aluminum alloy parts, process flow, composition of bath, oxidation parameters and keys points of operation for sulfuric acid anodic oxidation were introduced. By analyzing the main factors affecting sulfuric acid anodic oxidation of 2A12 aluminum alloy, the improvement and optimization were put forward from the aspects of pretreatment quality of parts, selection of process parameters, daily maintenance of baths, treatment of impurities, such as Cu2+、Al3+ and Cl-, and racking of parts during processing so that the phenomenon of black patches or spots occurring in sulfuric acid anodizing coatings can be eliminated completely.

参考文献/References:

[1] 赵洪凯.铝及铝合金硫酸阳极氧化常见故障的原因及排除措施〔J〕.材料保护, 2012, 45(12):63.
[2] 胡小华, 马林, 张斌, 等. LY12CZ基材表面阳极氧化膜局部发黑成因〔J〕.材料保护, 2010, 43(2):61-63.
[3] 王宝棣, 黄纪蓉. LY12铝合金阳极氧化层产生黑点原因分析〔J〕.电子显微学报, 2000, 19(4):559-560.
[4] 袁祖保, 黄红武, 毛喆. 铝合金硫酸阳极氧化生成黑色斑点、条纹的原因及预防措施〔J〕.应用技术, 2017, 279(4):114-115.

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备注/Memo

收稿日期： 2019-07-30；修回日期： 2019-10-20
通信作者： 李博（1969－）， 男， 高级工程师， 主要从事表面处理工艺的应用和研究。email: libo1969@163.com

更新日期/Last Update: 2020-02-10