稀土Y改性6063铝合金阳极氧化及耐蚀性研究  

Study on Anodizing and Corrosion Resistance of 6063 Aluminum Alloy Modified by Rare Earth Y

作　　者：贾庆贤 刘晓雄 余海存 安家志 丁万武[3] JIA Qingxian;LIU Xiaoxiong;YU Haicun;AN Jiazhi;DING Wanwu(Jiuquan Iron and Steel(Group)Co.,Ltd.,Jiayuguan 735100,China;Er Zhong(Deyang)Heavy Equipment Company Limited,Deyang 618000,China;School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]酒泉钢铁(集团)有限责任公司,甘肃嘉峪关735100 [2]二重(德阳)重型装备有限公司,四川德阳618000 [3]兰州理工大学材料科学与工程学院,兰州730050

出　　处：《有色金属工程》2024年第2期32-40,共9页Nonferrous Metals Engineering

基　　金：中央引导地方科技发展资金项目(23ZYQB309);嘉峪关科技计划项目(21-10)。

摘　　要：通过对含稀土Y的铸态及挤压态6063铝合金进行阳极氧化,研究了阳极氧化膜在6063铝合金上的形貌,并分析了其对合金硬度和耐腐蚀性能的影响。结果表明:与普通的6063铝合金相比,稀土Y改性6063铝合金氧化膜与基体结合紧密且表面致密无缺陷,其挤压态表面粗糙度Sa值最小,为1.36。阳极氧化膜化学成分主要为氧化铝,作为覆膜的氧化铝能显著提升合金表面硬度。通过对覆膜后挤压态稀土Y改性6063铝合金的自腐蚀电位研究,发现自腐蚀电流密度较小,总阻抗值较高,且在高频区表现为容抗弧的特性,耐蚀性更好。As cast and extruded 6063 aluminum alloy containing rare earth Y was prepared and anodized.The morphology of the anodic oxide film of the alloy was studied,and its effect on the hardness and corrosion resistance of the alloy was analyzed.The results showed that compared with ordinary 6063 aluminum alloy,the oxide film of 6063 aluminum alloy modified by rare earth Y has dense surface,no defects and is closely combined with the matrix,and the corresponding surface roughness S a value is the smallest.The chemical composition of anodic oxide film is mainly alumina,which can significantly improve the surface microhardness of the alloy.After coating,the self-corrosion potential of extruded rare earth Y modified 6063 aluminum alloy is corrected,the self-corrosion current density is small,the total impedance value is high,and it shows the characteristics of capacitive arc resistance in high frequency region,and the corrosion resistance is better.

关 键 词：6063铝合金 稀土Y 阳极氧化膜 极化曲线 耐蚀性 

分 类 号：TG146.2[一般工业技术—材料科学与工程]