Copper and its alloys, with their unique characteristics including a low coefficient of thermal expansion, a high melting point, superior thermal and electrical conductivities, outstanding ductility, and commendable resistance to corrosion, are considered highly suitable for applications in power generation, electrical sectors, military operations, and heat exchange pipelines in submarines. Despite its many advantages, the application of copper is somewhat restricted due to its low strength, hardness, and limited resistance to corrosion and wear. However, the plasma electrolytic oxidation (PEO) process, which can generate multifunctional oxides such as CuO, CuO, and ZnO, offers a promising method for improving the wear and corrosion characteristics of copper-based materials. This paper presents an overview of the latest advancements in the PEO treatment applied to copper and brass. This review offers a comprehensive understanding of the formation of PEO coatings on copper and brass substrates. It explores how the PEO process, its parameters like electrolyte composition, nanoparticle addition, and various post-PEO treatment methods can influence the coatings’ morphology, composition, and resistance to corrosion and wear. This review serves as a valuable guide for future research in the field of PEO treatment for copper and its alloys.

中文翻译：

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等离子电解氧化（PEO）工艺应用于铜和黄铜的研究进展

铜及其合金具有低热膨胀系数、高熔点、优异的导热性和导电性、出色的延展性和值得称赞的耐腐蚀性等独特特性，被认为非常适合发电、电力行业、军事行动和潜艇中的热交换管道。尽管铜具有许多优点，但由于其强度、硬度低、耐腐蚀和耐磨性有限，其应用受到一定限制。然而，等离子体电解氧化（PEO）工艺可以生成CuO、CuO和ZnO等多功能氧化物，为改善铜基材料的磨损和腐蚀特性提供了一种有前途的方法。本文概述了应用于铜和黄铜的 PEO 处理的最新进展。本综述提供了对铜和黄铜基材上 PEO 涂层形成的全面了解。它探讨了 PEO 工艺、电解质成分、纳米粒子添加等参数以及各种 PEO 后处理方法如何影响涂层的形态、成分以及耐腐蚀性和耐磨性。该综述对铜及其合金 PEO 处理领域的未来研究具有重要的指导意义。