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利用阳极氧化法在YL113铝合金表面制备了一层氧化膜,通过SEM、XRD、EDS、XPS等手段对其表面-界面形貌、物相、化学元素组成和原子结合能谱进行了分析,对其表面和结合界面化学元素进行了面扫描和线扫描分析,并对氧化膜界面结合形式进行了表征。结果表明,阳极氧化后Al原子和O原子在氧化膜表面产生分层富集现象,其原子分数之比接近2∶3,所生成的氧化膜组成物为α-Al2O3+γ-Al2O3;Al2p峰结合能为74.37 eV,以Al3+形态存在,O1s峰结合能为531.82 eV,以O2-形态存在,氧化膜是以Al2O3形式存在;Al和O原子在氧化膜结合界面形成富集层,氧化膜与基体形成化合物型界面+扩散型界面组合形式;在结合界面处出现大量的小岛及锚点,氧化膜表现为较强的界面结合力。
Anodic oxidation was used to prepare an oxide film on the surface of YL113 aluminum alloy. The surface-interface morphology, phase, chemical composition and atomic energy spectra were analyzed by SEM, XRD, EDS and XPS. The surface and interface chemical elements were analyzed by surface scan and line scan, and the interface of the oxide film was characterized. The results show that Al atoms and O atoms on the surface of the oxide film after the anodization produce stratified enrichment phenomenon, the atomic fraction ratio is close to 2: 3, and the oxide film composition is α-Al2O3 + γ-Al2O3; Al2p peak The binding energies are 74.37 eV and exist as Al3 +. The O1s peak binding energies are 531.82 eV and exist as O2-. The oxide film is in the form of Al2O3. The Al and O atoms form an enrichment layer at the oxide film interface, The matrix forms a combination of compound-type interface and diffusion-type interface. A large number of islands and anchors appear at the bonding interface, and the oxide film shows strong interfacial bonding force.