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在LF6铝合金表面制备得到了微弧氧化膜层,通过扫描电镜、X射线衍射仪对膜层的微观结构、相结构进行了表征,通过盐雾腐蚀试验和湿热腐蚀试验对防锈铝基体及微弧氧化膜层进行了加速腐蚀试验。结果表明,LF6铝合金表面制备的微弧氧化膜层主要由α-Al_2O_3、γ-Al_2O_3组成,膜层表面呈多孔结构,内部致密。LF6铝合金在盐雾腐蚀条件下表面出现絮状腐蚀产物,产生腐蚀现象,对环境条件的适应能力不能满足要求;微弧氧化样品在加速腐蚀后表面没有发现裂纹,也没有发生明显的腐蚀现象,对环境条件的适应能力较好。
The micro-arc oxidation coating was prepared on the surface of LF6 aluminum alloy. The microstructure and phase structure of the coating were characterized by scanning electron microscopy and X-ray diffractometer. The corrosion resistance of the anti-rust aluminum matrix and Micro-arc oxidation film accelerated corrosion test. The results show that the MAO coatings prepared on the surface of LF6 aluminum alloy consist mainly of α-Al_2O_3 and γ-Al_2O_3. The surface of the coating is porous and its interior is dense. The LF6 aluminum alloy appeared the flocculent corrosion product on the surface under the salt spray corrosion condition, which produced the corrosion phenomenon and could not meet the requirements for the adaptability to the environmental conditions. There was no crack on the surface of the microarc oxidation sample after the accelerated corrosion and no obvious corrosion phenomenon occurred , Adaptability to environmental conditions is better.