用于结晶器铜板表面强化的镍基复合镀层的制备与研究

Preparation and Investigation of Nickel Based Composite Coatings for Surface Modification of Copperplate of Crystallizer

采用超声波-直流电沉积法和超声波-脉冲电沉积法在结晶器铜板表面制备两种Ni-ZrO_2复合镀层试样,以期提高结晶器铜板表面的耐磨性。检测了两种试样的表面形貌、显微结构、显微硬度和耐磨性。结果表明:两种试样表面均较为平整,无明显缺陷,组织致密。超声波-直流电沉积法制备的试样的显微硬度是结晶器铜板的6.0倍,摩擦因数较结晶器铜板的降低22.2%;而超声波-脉冲电沉积法制备的试样的显微硬度是结晶器铜板的6.3倍,摩擦因数较结晶器铜板的降低25.9%。与结晶器铜板相比,两种试样的耐磨性良好。

Two Ni of crystallizer electrodepositio The surface mo tested. Results by ZrO2 composite coating samples were prepared on the surface of copperplate using ultrasonic-direct electrodeposition method and ultrasonic-pulse n method in order to improve the wear resistance of copperplate of crystallizer. rphology, showed microstructure, microhardness and wear resistance of two samples were two samples with smooth surface, compact remarkable defects. The microhardness of the sample prepared by using structure and no ultrasonic-direct electrodeposition method was 6.0 times of copperplate of crystallizer, and the friction coefficient was reduced by 22.2% compared to that of copperplate of crystallizer. However, the microhardness of the sample prepared by using ultrasonic-pulse electrodeposition method was 6.3 times of copperplate of crystallizer, and the friction coefficient was reduced by 25.9% compared to that of copperplate of crystallizer. Compared with copperplate of crystallizer, the wear resistance of two samples was better.