导电辊用Ni基非晶镀层的电沉积制备及其腐蚀与力学性能

his study was focused on the electrodeposition of defect-free Ni based amorphous layer with good adhesion strength on a conductive roller, in an effort to solve the limitations of the current methods for preparation of the working layer of the conductive roller. Effects of the parameters on the deposition efficiency, composition, corrosion resistance etc. were studied, and the optimized electrodeposition parameters were obtained. Furthermore, the effect of P content of the Ni-P alloy on its surface morphology, crystalline structure, hardness and corrosion resistance were analyzed in detail. The results showed that with the increase of P content, the hardness of the Ni-P alloy firstly increased and then declined while the corrosion resistance increased. The Ni-P alloy with P content above 10% had an amorphous structure with smooth surface, high hardness and superior corrosion resistance. Based on the experimental work, the present work also gave a case of practical application, i.e., electrodeposition of Ni-based amorphous alloy on a conductive roller (1 800 mm in length, 350 mm in diameter) from 2030 electrogalvanizing line in Baosteel Co., Ltd.