摘要：【中文】本发明提供一种铜合金表面长效防腐涂层及其制备方法，该长效防腐涂层包括基体及基体表面的防腐涂层，所述防腐涂层由沉积在基体表面的Cu预氧化涂层，及填充于Cu预氧化涂层内部及表面的油酸层，所述防腐涂层的制备方法包括：1）铜电极试样的制备；2）铜电极试样的表面预处理；3）在铜电极试样表面预氧化沉积油酸制备铜合金防腐涂层，其中步骤3）是指：以铜电极试样为基体，首先在裸铜基体上电沉积纳米Cu结构，其次将纳米结构Cu氧化，最后在氧化后的基体表面注入油酸至于烘箱恒温8‑12 h形成铜合金防腐涂层。该防腐涂层的表面接触角为100.2°，表现出超疏水性，同时改涂层具有良好的力学性能，即使出现一定程度的损伤，仍能保持良好的耐腐蚀性能。 【EN】The invention provides a long-acting anticorrosive coating on the surface of a copper alloy and a preparation method thereof, wherein the long-acting anticorrosive coating comprises a substrate and an anticorrosive coating on the surface of the substrate, the anticorrosive coating comprises a Cu pre-oxidation coating deposited on the surface of the substrate and an oleic acid layer filled in the Cu pre-oxidation coating and on the surface of the Cu pre-oxidation coating, and the preparation method of the anticorrosive coating comprises the following steps: 1) preparing a copper electrode sample; 2) surface pretreatment of a copper electrode sample; 3) pre-oxidizing and depositing oleic acid on the surface of a copper electrode sample to prepare a copper alloy anticorrosive coating, wherein the step 3) is as follows: a copper electrode sample is taken as a substrate, firstly, a nano Cu structure is electrodeposited on a bare copper substrate, secondly, the nano Cu structure is oxidized, and finally, oleic acid is injected into the surface of the oxidized substrate, and the surface is placed in an oven to be kept at a constant temperature for 8-12 h to form a copper alloy anticorrosive coating. The surface contact angle of the anticorrosive coating is 100.2 degrees, the coating shows super-hydrophobicity, and meanwhile, the coating has good mechanical property, and even if the coating is damaged to a certain degree, the coating still can keep good corrosion resistance.