Abstract High-performance coatings with self-lubrication, superior wear, and corrosion resistance are sought after in modern industry. Here we reported a cobalt–nickel/tungsten disulfide (Co-Ni/WS2) composite coating fabricated by a pulse electrodeposition approach. The codeposition of WS2 significantly affects the microstructure, hardness, and tribological and electrochemical behaviors of the Co-Ni/WS2 composite coating. Scanning electron microscopy, X-ray diffraction, and energy dispersive X-ray spectroscopy analyses show that the Co-Ni/WS2 composite coating is characterized by a hierarchical “cactus-like” structure with WS2 embedded and distributed uniformly in the Co-Ni matrix. Tribological and electrochemical tests reveal that the Co-Ni/WS2 composite coating exhibits a low coefficient of friction (COF) and wear rate sliding against a GCr15 steel ball under dry sliding conditions and remarkable corrosion resistance in 5.0 wt% NaOH solution under room temperature and is thus a promising composite coating for practical applications. Graphical Abstract

中文翻译：

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具有优异摩擦和防腐性能的电镀Co-Ni/WS2复合涂层

摘要 具有自润滑性、耐磨性和耐腐蚀性的高性能涂层在现代工业中受到追捧。在这里，我们报道了一种通过脉冲电沉积方法制造的钴镍/二硫化钨（Co-Ni/WS2）复合涂层。WS2 的共沉积显着影响 Co-Ni/WS2 复合涂层的微观结构、硬度以及摩擦学和电化学行为。扫描电子显微镜、X 射线衍射和能量色散 X 射线光谱分析表明 Co-Ni/WS2 复合涂层的特征是分层的“仙人掌状”结构，WS2 嵌入并均匀分布在 Co-Ni 基体中. 摩擦学和电化学测试表明，Co-Ni/WS2 复合涂层在干滑动条件下与 GCr15 钢球滑动时具有低摩擦系数 (COF) 和磨损率，并且在室温和 5.0 wt% NaOH 溶液中具有显着的耐腐蚀性能。因此是一种有前途的实际应用复合涂层。图形概要