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通过向硫酸阳极氧化槽液中添加己二酸,研究了LY12CZ铝合金的己二酸硫酸阳极氧化,并与传统硫酸阳极氧化进行了对比.采用场发射扫描电子显微镜(FE-SEM)对两种阳极氧化膜的微观形貌进行了观察,用电化学阻抗谱(EIS)对比研究了两种氧化膜的电化学特性参数及耐腐蚀性能,采用万能力学实验机对阳极氧化后LY12CZ板材试样进行疲劳寿命测试比较.结果表明,与传统硫酸阳极氧化膜相比,己二酸硫酸阳极氧化膜具有更小的孔洞结构和更少的缺陷,在腐蚀环境中有更好的稳定性和耐腐蚀性能,对铝合金试样的疲劳损伤也大大减弱,并对机理进行了初步探讨.
By adding adipic acid to sulfuric acid anodizing bath, the anodic oxidation of adipic acid in LY12CZ aluminum alloy was studied and compared with the conventional anodic oxidation of sulfuric acid.Using field emission scanning electron microscope (FE-SEM) The morphology of the anodic oxide film was observed. Electrochemical impedance spectroscopy (EIS) was used to compare the electrochemical characteristics and corrosion resistance of the two oxide films. The LY12CZ sheet samples after anodization were tested by universal mechanical testing machine Fatigue life test results show that, compared with the conventional sulfuric acid anodized film, adipic acid sulfuric acid anodic oxide film has a smaller hole structure and fewer defects in the corrosive environment has better stability and corrosion resistance , The fatigue damage to the aluminum alloy sample is greatly weakened, and the mechanism is discussed preliminarily.