CAJ | 학술논문

采用高频脉冲电沉积法在不锈钢板上制备 Ni-Co/SiC 复合镀层。研究了镀液中 SiC 含量、脉冲频率、占空比以及平均电流密度对复合镀层中Si含量的影响，得到的较佳工艺参数为：纳米SiC 8 g/L，脉冲频率60 kHz，平均电流密度3~4 A/dm2，占空比0.32，温度40°C，pH 4.0~5.0，时间60 min。对比研究了较佳工艺下制备的Ni-Co/SiC和Ni-Co镀层的表面形貌和相结构。结果表明，Ni-Co/SiC 复合镀层的表面比 Ni-Co 合金镀层更细致均匀，SiC具有细化镀层晶粒的作用。
채용고빈맥충전침적법재불수강판상제비 Ni-Co/SiC 복합도층。연구료도액중 SiC 함량、맥충빈솔、점공비이급평균전류밀도대복합도층중Si함량적영향，득도적교가공예삼수위：납미SiC 8 g/L，맥충빈솔60 kHz，평균전류밀도3~4 A/dm2，점공비0.32，온도40°C，pH 4.0~5.0，시간60 min。대비연구료교가공예하제비적Ni-Co/SiC화Ni-Co도층적표면형모화상결구。결과표명，Ni-Co/SiC 복합도층적표면비 Ni-Co 합금도층경세치균균，SiC구유세화도층정립적작용。
Ni–Co/SiC composite coatings were prepared on stainless steel substrate by high-frequency pulse electro-deposition. The effects of SiC content in plating bath, pulse frequency, duty cycle, and current density on the Si content of Ni–Co/SiC composite coating were studied. The optimal process parameters were obtained as follows:nano-SiC 8 g/L, pulse frequency 60 kHz, average current density 3-4 A/dm2, duty cycle 0.32, temperature 40 °C, pH 4.0-5.0, and time 60 min. The surface morphologies and crystal structures of Ni–Co/SiC and Ni–Co coatings were compared. The results showed that the surface of Ni–Co/SiC composite coating is more compact and uniform than that of Ni–Co alloy coating, indicating that the incorporation of SiC particles has grain refining effect.