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利用复合电沉积技术制备了Ni-金刚石复合镀层,研究了溶液中微粒悬浮量对复合量的影响,并从两步吸附、微粒传输及界面作用力等不同角度初步探讨了金刚石微粒进入镀层的共沉积过程。结果表明:在研究范围内,随溶液中金刚石微粒悬浮量的提高,镀层中微粒复合量先升高而后缓慢降低。Ni-金刚石复合镀层的形成与N.Guglielmi的两步吸附模型及Yeh的微粒传输模型不完全吻合。分析认为,金刚石微粒与镍金属的共沉积分2个阶段,第1阶段,微粒依靠搅拌作用传输至电极表面,第2阶段,微粒在高场强协助下通过界面作用力的作用逐渐被沉积金属埋覆。
Ni-diamond composite coating was prepared by composite electrodeposition technique. The influence of the amount of particle suspension in the solution on the compounding amount was studied. The effects of the diamond particles entering the coating were also discussed from two different steps: adsorption, particle transport and interfacial force Deposition process. The results show that, with the increase of the suspended amount of diamond particles in the solution, the amount of composite particles in the coating first increases and then decreases slowly. The formation of Ni-diamond composite coating does not completely coincide with the N.uguglielmi two-step adsorption model and the Yeh particle transport model. The analysis shows that the co-deposition of diamond particles and nickel metal is divided into two stages. In the first stage, the particles are transported to the electrode surface by stirring. In the second stage, the particles are gradually deposited by the action of the interface force with the help of the high field strength. Buried.