激光诱导船用铜合金超疏水表面的防腐抗污性能研究

Anti-Fouling and Corrosion Resistance of Laser-Induced Superhydrophobic Surface on Marine Copper Alloy

为改善船用9442铜合金在海洋环境中的防腐抗污性能,通过纳秒激光刻蚀的方法提升其表面的疏水性能。激光表面加工后,在材料表面形成了分层的微纳复合结构,从而获得了接触角大于150°的超疏水铜合金表面。考察采用各种激光功率处理后铜合金表面的电化学腐蚀性能,结果表明当激光功率达到100 W时,所制备的超疏水铜合金表面的腐蚀电流密度为7.323×10^(-7)A/cm^(2),相较于未处理的铜合金表面,缓蚀效率可达70.0%,表明所制得的超疏水铜合金表面具有良好的防腐蚀性能。根据船用9442铜合金的实际使用环境,进一步开展了近海抗污性能测试。结果表明,未处理的铜合金表面出现较为明显的脱成分腐蚀,而所制备的超疏水铜合金表面展现出良好的防污抗腐性能,具有良好的实际应用价值。

To enhance the anti-corrosion and antifouling capabilities of 9442 copper alloy in marine environment,a nanosecond laser surface treatment was employed to induce a hierarchical micro/nano composite structure,resulting in superhydrophobic surfaces with contact angles exceeding 150°.Electrochemical corrosion tests on these surfaces,treated with varying laser powers,revealed that at 100 W,the corrosion current density decreased to 7.323×10^(-7)A·cm^(-2),achieving a 70.0%corrosion inhibition efficiency compared to untreated copper alloy.Additionally,offshore antifouling performance tests demonstrated that the superhydrophobic surface exhibited superior antifouling and corrosion resistance,with minimal component corrosion,highlighting its practical application potential in marine environments.