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[目的]研究碳化硅(SiC)颗粒预处理对其在钴基复合镀层中强化行为的影响，旨在通过调控颗粒表面性质来提升复合镀层的硬度与耐磨性。[方法]采用NaOH溶液对Si C颗粒进行去氧化层和粗化两种预处理，分析了处理后颗粒的亲水性、分散性及Zeta电位；以镀层的显微硬度和耐磨性为指标，通过正交试验优化了Co–SiC复合电镀工艺。[结果]采用60 g/L粗化的SiC颗粒作为第二相，在镀液pH为5.0、电流密度4 A/dm2的条件下电镀1 h时，所得Co–SiC复合镀层的显微硬度较高(405.3 HV)，耐磨性最优。[结论]本研究为开发高性能环保型耐磨镀层提供了有效的策略。
Abstract：[Objective] The effect of silicon carbide(SiC) particle pretreatment on the strengthening behavior of cobalt-based composite coatings was studied, aiming to improve the hardness and wear resistance of the coatings by modifying the particle surface properties. [Method] Si C particles were pretreated by oxide film removal and roughening using a NaOH solution. The hydrophilicity, dispersibility, and Zeta potential of the treated particles were analyzed. The Co–SiC composite electroplating process was optimized through orthogonal experiment using the microhardness and wear resistance of the coatings as indicators. [Result] The Co–Si C composite coating electroplated with 60 g/L of roughened SiC particles as reinforcement phase at pH 5.0 and current density 4 A/dm2 for 1 hour demonstrated a high microhardness(405.3 HV) and optimal wear resistance. [Conclusion] This study provides an effective strategy for developing high-performance, environmentally friendly, and wear-resistant coatings.
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基本信息:
DOI：10.19289/j.1004-227x.2026.01.010
中图分类号:TQ153
引用信息:
[1]吴梦楠,唐俊榕,鲍其鹏,等.SiC颗粒预处理对Co–SiC复合电镀层硬度和耐磨性的影响[J].电镀与涂饰,2026,45(01):79-85.DOI:10.19289/j.1004-227x.2026.01.010.
基金信息:
国家商用飞机制造工程技术研究中心创新基金(COMAC-SFGS-2023-2597)