Abstract: Four kinds of Cu-Cu₂O coatings were prepared by cold spray technology.The coating component characterization experiment and antifouling experiment showed that Cu powder and Cu₂O powder did not show a large number of oxidation during the spraying process and the major antifouling component of Cu₂O could be mixed into the coating system easily.The Cu₂O powder could not reached 100% utilization during spraying. The actual mass ratios of Cu₂O were 8.35%, 15.72%, 22.57% respectively in the coatings that were prepared by90%Cu₂O-10% Cu, 80% Cu₂O- Cu and 70% Cu₂O-30% Cu powder. Due to facilitating role of Cu₂O on the corrosion of Cu and the reaction of Cu₂O and Cl^- , the more Cu₂O in the coating, the greater leaching rate of copper ions. The copper ions leaching rates of 20% Cu₂O-80% Cu and 30% Cu₂O-70% Cu coatings were maintained at more than 50 ug/(cm².d), which could prevent majority of marine foulings from adhesion. The 30% Cu₂O-70% Cu coating shown the best antifouling effect after immersion in Xiamen sea area for 1 month, 3 months and 13 months.

Key words: Cu-Cu₂O coating, cold spray, ieaching rate of copper ions, antifouling

摘要： 通过冷喷涂技术制备了4种不同Cu、Cu₂O配比的Cu-Cu₂O涂层,涂层组分表征实验及实海防污挂片实验结果表明:在喷涂过程中,Cu粉和Cu₂O粉均没有出现大量氧化现象,涂层的主要防污组分Cu₂O能够顺利制备到涂层中;在喷涂过程中Cu₂O粉不能100%利用,10%Cu₂O-90%Cu、20%Cu₂O-80%Cu和30%Cu₂O-70%Cu粉末制备的涂层中Cu₂O实际的质量分数分别为8.35%、15.72%、22.57%;Cu₂O对Cu涂层溶解的促进作用和Cu₂O自身与Cl^-的反应,使涂层中Cu₂O含量越高,铜离子渗出率越大。20%Cu₂O-80%Cu涂层和30%Cu2O-70%Cu涂层的铜离子渗出率始终保持在50μg/(cm²·d)以上,可以抑制绝大部分海生物的附着;实际涂层样板在厦门海域分别浸泡1个月、3个月、13个月,各时段防污效果最好的始终是30%Cu₂O-70%Cu涂层。

关键词: Cu-Cu₂O涂层, 冷喷涂, 铜离子渗出率, 防污