Short pulses from a Nd:YAG laser effectively enhanced the corrosion resistance of aluminum alloy. Laser heat treatment at energies of 450, 550, 650, and 750 mJ was applied prior to anodization of 1050 aluminum alloy at voltages of 5, 10, and 15 V. The pitting corrosion potential of the anodic oxide layer was investigated in a seawater environment by electrochemical tests, and the corrosion behavior of the aluminum alloy samples was analyzed by polarization and cyclic tests to provide vital information on their corrosion resistance. The corrosion current (I_corr) at 15 V was reduced from 175.47 µA/cm² to 22.97 µA/cm² and the potential corrosion (E_corr) was reduced from −573.4 mV to −334.8 mV by laser treatment. The current density in the cyclic test decreased from 203.58 µA/cm² to 21.29 µA/cm² with Laser; the potential corrosion (E_corr) at 15 V also reduced from −591.9 mV to −358.9 mv. The corrosion resistance for best laser energy was improved at 650 and 750 mJ. Results showed that the oxide layer is influenced by laser treatment. The surface morphology of samples treated before and after laser enhancement was studied, and absorption of laser energy could increase the corrosion resistance of the 1050 aluminum alloy surface. The process and conditions adopted in this paper could improve the pitting corrosion resistance of 1050 aluminum alloy.

Nd：YAG激光器发出的短脉冲有效地增强了铝合金的耐腐蚀性。在1050铝合金在5、10和15 V的电压下进行阳极氧化之前，先以450、550、650和750 mJ的能量进行激光热处理。在海水环境中研究了阳极氧化层的点蚀电位通过电化学测试，并通过极化和循环测试分析了铝合金样品的腐蚀行为，以提供有关其耐腐蚀性的重要信息。15 V时的腐蚀电流（I _corr）从175.47 µA / cm ²降低到22.97 µA / cm ²，而潜在的腐蚀（E _corr通过激光处理将）从-573.4mV降低到-334.8mV。循环测试中的电流密度在使用激光的情况下从203.58 µA / cm ²降低到21.29 µA / cm ²。15 V时的潜在腐蚀（E _corr）也从-591.9 mV降至-358.9 mv。最佳激光能量的耐腐蚀性在650和750 mJ时得到了改善。结果表明，氧化层受激光处理的影响。研究了激光增强前后样品的表面形态，吸收激光能量可以提高1050铝合金表面的耐蚀性。本文采用的工艺和条件可以提高1050铝合金的抗点蚀性能。