使用紫外光辅助溶胶 -凝胶的光化学工艺，在微弧氧化的铝合金纤维表面涂敷一层封孔层，封孔层能够有效地将多孔的微弧氧化膜封闭，显著提高铝合金纤维的耐腐蚀性能。对微弧氧化后和封孔后的铝合金纤维进行电化学分析，结果显示，封孔后铝合金纤维的腐蚀电位从 -0.651 V正移至 -0.368V。腐蚀电流密度 Icorr从 6.02×10-6 A/cm2降低到 9.58×10-10 A/cm2，极化电阻 Rp从 5.4×103 Ω·cm2增加到 4.5× 104Ω·cm2，紫外光处理过的封孔膜层的腐蚀速率显著降低，铝合金纤维的耐腐蚀性能显著提高。
A thin sealing layer was coated on the micro-arc oxidation film of aluminiumalloy fiber by photo-chemical sol-gel method assisted underultraviolet light. The sealing layercould seal the porous micro-arc oxidation film completely，with a significant increase of thecorrosion resistance of aluminium fiber. The corrosion resistance of the micro-arc oxidation film and sealed layer were analysed by electrochemical workstation，the result showed that the corrosion potential of aluminum alloy fiber was positively shifted form -0. 651 V to -0. 368 V. The corrosion current Icorr was decreased form 6.02×10-6 A/cm2 to 9.58×10-10 A/cm2. The polarization impedance Rp was increased from 5.4×103 Ω·cm2 to 4.5×104 Ω·cm2，and the ultraviolet light treated micro-arc oxidation sealing layer provided low corrosion rate，which ensured the beter corrosion resistance property of aluminum fiber.
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