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研究了在Wats镀镍液中ZrO2颗粒与镍复合电沉积的阴极电流密度以及颗粒在镀液中分散量对颗粒共析量的影响,探讨了复合电沉积的过程与模型.研究表明,在小的颗粒分散量下,复合电沉积为颗粒向阴极的传输所控制,导致共析量随电流密度增大而减少.在大的颗粒分散量,小电流密度时复合电沉积为颗粒的强吸附过程所控制,致使共析量随电流密度增大而增加;大电流密度时,复合电沉积为颗粒向阴极的传输所控制,造成共析量随电流密度的增大而减少.
The cathode current density of ZrO2 particles and nickel electrodeposited in Wats nickel plating solution and the influence of particles dispersed in the bath on the eutectoid amount of the particles were investigated. The process and model of composite electrodeposition were discussed. The results show that the composite electrodeposition is controlled by the transport of the particles to the cathode at a small amount of particle dispersion, resulting in a decrease in the amount of eutectoid precipitation as the current density increases. In the case of large particle dispersion and small current density, the composite electrodeposition is controlled by the strong adsorption process of the particles, which leads to the increase of the eutectoid amount with the increase of the current density. At the high current density, the composite electrodeposition is the transmission of particles to the cathode Control, resulting in the amount of eutectoid decay with increasing current density.