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  

Nickel based amorphous plating layers for conductive rollers by electrodeposition and their corrosion and mechanical properties

作　　者：陈霜[1] 龚臣燕[1] 李俊[2] 黄胜标[2] 唐成龙[2] 刘帆[1] 钟澄[1] 

机构地区：[1]上海交通大学金属基复合材料国家重点实验室,上海200240 [2]宝山钢铁股份有限公司,上海201900

出　　处：《中国科技论文》2013年第2期98-103,共6页China Sciencepaper

基　　金：国家科技支撑计划资助项目(2011BAE13B08);高等学校博士学科点专项科研基金资助项目(20100073120109)

摘　　要：针对电镀锌用导电辊长期被国外进口技术所垄断及传统导电辊工作层制备方法存在的局限性,提出利用电沉积方法在导电辊基体表面直接获得结合性良好、无任何组织缺陷和微观冶金缺陷的Ni基非晶镀层。从电沉积工艺出发,以电沉积效率、镀层成分和镀层的耐蚀性等作为主要考察指标,获得了工艺参数对各项指标的影响规律,进而确定最佳的电沉积工艺。考察了Ni-P合金镀层中不同P含量对合金形貌、组织结构、硬度及耐蚀性的影响。随Ni-P合金中P含量的提高,合金的硬度先提高后降低,耐蚀性逐渐增加。P质量分数10%以上的Ni-P合金呈现为完全的非晶态结构,具有平整的表面形貌、较高的硬度和优异的耐蚀性。采用提出的电镀工艺,成功地在宝钢冷轧厂2030电镀锌机组用导电辊表面获得了P含量稳定的Ni基非晶合金镀层,该镀层致密、无任何组织缺陷。This 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 conduc- tive 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 mor- phology, crystalline structure, hardness and corrosion resistance were analyzed in detail. The results showed that with the in crease 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.

关 键 词：导电辊 镀镍 镍合金 电沉积 硬度 耐蚀性 

分 类 号：TG174.4[金属学及工艺—金属表面处理]