摘要
针对铝合金表面极易氧化生成结构疏松、耐腐蚀性差的氧化膜问题,利用阳极氧化法对2A96铝合金表面进行防腐蚀处理。通过改变阳极氧化实验中的氧化电压,在2A96铝合金表面制备不同的阳极氧化膜;利用金相显微镜观察各个阳极氧化膜的表面形貌、测厚仪测量其厚度、显微硬度计测定其硬度、点滴实验获取其点滴时间、电化学工作站获取其极化曲线和交流阻抗谱,进而对阳极氧化膜的耐腐蚀性进行研究。结果表明,在所测电压范围(8~16 V)内,随着电压的升高,阳极氧化膜的厚度、硬度、点滴时间也逐渐增加,耐腐蚀性能也随之增强。2A96铝合金经过表面阳极化处理后,其性能显著提高。
The surface of the aluminum alloy tends to get oxidized to form an oxide ?lm with porosity structure and poor corrosion resistance. The surface of the 2 A96 aluminum alloy was treated by anodizing. Different anodized films were prepared on the surface of 2 A96 aluminum alloy by changing the oxidation voltage in the anodizing experiment. The surface morphology of each anodized ?lm was observed by the metallographic microscope, while the thickness of the anodized ?lm was measured by a thickness gauge, and the microhardness tester was used for measuring the hardness, with spotting experiment for obtaining its drip time, and electrochemical workstation for obtaining its polarization curve and AC impedance spectrum, and then its corrosion resistance was studied. The results showed that the thickness, hardness and drip time of the anodized ?lm increased gradually with the increase of voltage within the measured voltage range(8~16 V), and the corrosion resistance was also enhanced. After the surface anodization of 2 A96 aluminum alloy, its performance was signi?cantly improved.
作者
阳建君
王博文
陈天鸥
范才河
刘丹
欧玲
旷焕
雷新蕾
YANG Jianjun;WANG Bowen;CHEN Tianou;FAN Caihe;LIU Dan;OU Ling;KUANG Huan;LEI Xinlei(College of Metallurgical and Material Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China;Zhuzhou Times New Material Technology Co.,Ltd,Zhuzhou Hunan 412007,China;The Technological Center of Xiangtan Iron Steel Co.,Ltd,Xiangtan Hunan 411101,China)
出处
《包装学报》
2019年第5期16-23,共8页
Packaging Journal
基金
湖南省自然科学基金资助项目（2019JJ60068）
株洲市科技计划基金资助项目（株科发〔2018〕62号5）
湖南工业大学大学生创新创业训练计划基金资助项目（湘教通〔2017〕205号469）
湖南株洲轨道交通及先进材料技术科普基地基金资助项目（湘科函[2018]48号29）
关键词
2A96铝合金
阳极氧化膜
氧化电压
交流阻抗谱
aluminum alloy 2A96
anodic oxide film
oxidation voltage
AC impedance spectrum
