The offshore and coastal infrastructure needs additional protection from wear, corrosion, and tribocorrosion. Herein, electrospark deposition (ESD) was employed to deposit composite TaC-(Fe,Mo,Ni) and (Ta,Zr)C-(Fe,Mo,Ni) coatings with a metallic matrix (similar in elemental composition to that of stainless steel) reinforced with carbide nanoparticles. The coatings were produced using TaC–Mo–Ni and TaC–ZrC–Mo–Ni electrodes under different energy regimes by varying frequency, voltage, and pulse duration to obtain different carbide contents. The obtained coatings have a bilayer composite structure: core-shell TaC–ZrC crystallites embedded in an Fe-based metal matrix with a (Ta,Zr)C network (zone 1) and approximately 5 nm Fe-based nanocrystallites surrounded by amorphous interlayers (zone 2). The tribological properties of TaC-(Fe,Mo,Ni) and (Ta,Zr)C-(Fe,Mo,Ni) coatings were superior to those of uncoated AISI 304 stainless steel, both in the 3.5% NaCl solution and in 3.5% NaCl + SiC suspension. The electrochemical characteristics of the best coatings were comparable to those of the stainless steel. Tribocorrosion tests indicated that when load is applied, the open-circuit potential values of steel reduce more significantly than those of the coatings.

海上和沿海基础设施需要额外的磨损、腐蚀和摩擦腐蚀保护。在本文中，采用电火花沉积 (ESD) 沉积复合 TaC-(Fe,Mo,Ni) 和 (Ta,Zr)C-(Fe,Mo,Ni) 涂层与金属基体（元素组成与不锈钢相似）钢）用碳化物纳米颗粒增强。涂层是使用 TaC-Mo-Ni 和 TaC-ZrC-Mo-Ni 电极在不同能量状态下通过改变频率、电压和脉冲持续时间来制备的，以获得不同的碳化物含量。获得的涂层具有双层复合结构：核壳 TaC-ZrC 微晶嵌入 Fe 基金属基质中，具有 (Ta,Zr)C 网络（区域 1）和约 5 nm 的 Fe 基纳米微晶被非晶夹层包围（区域 2)。TaC-(Fe,Mo,Ni)和(Ta, Zr)C-(Fe,Mo,Ni) 涂层在 3.5% NaCl 溶液和 3.5% NaCl + SiC 悬浮液中均优于未涂层的 AISI 304 不锈钢。最佳涂层的电化学特性与不锈钢的相当。摩擦腐蚀试验表明，当施加载荷时，钢的开路电位值比涂层的开路电位值下降得更明显。