HEDP浓度对烧结钕铁硼碱性无氰镀铜的影响  

Effect of HEDP concentration on alkaline cyanide-free copper electroplating of sintered NdFeB

作　　者：唐方宇 邵波 刘志恒 王春霞[2] 史鑫 TANG Fangyu;SHAO Bo;LIU Zhiheng;WANG Chunxia;SHI Xin(Xifan instruments(Shenzhen)Co.,Ltd.,Shenzhen 518000,China;School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]西凡仪器(深圳)有限公司,广东深圳518000 [2]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《电镀与涂饰》2024年第10期17-22,共6页Electroplating & Finishing

摘　　要：[目的]烧结钕铁硼(NdFeB)磁体在声电磁性器件中的应用日益广泛,但其耐蚀性较差,一般需要进行有效的表面处理以提高其耐腐蚀性能和使用寿命。[方法]采用以羟基乙叉二膦酸(HEDP)为主配位剂的碱性无氰体系对烧结Nd Fe B磁体表面电镀铜。研究了HEDP质量浓度对Cu镀层外观、表面粗糙度、厚度、结合力和耐蚀性的影响。[结果]HEDP的质量浓度为100~150 g/L时所得Cu镀层表面较光亮,厚度约为1.55μm,表面粗糙度较低,结合力和耐蚀性最佳。[结论]适宜的HEDP浓度有利于获得综合性能较好的Cu镀层。[Introduction]Sintered neodymium-iron-boron(NdFeB)magnets are increasingly used in acousto-electromagnetic parts,it is necessary to conduct some effective surface treatments to improve their corrosion resistance and service lives.[Method]Copper electroplating was carried out on the surface of sintered NdFeB magnet in an alkaline cyanide-free bath with 1-hydroxyethylidene-1,1-diphosphonic acid(HEDP)as the main complexing agent.The effect of mass concentration of HEDP on the appearance,surface roughness,thickness,adhesion,and corrosion resistance of Cu coating was studied.[Result]The Cu coating electroplated with 100-150 g/L of HEDP was bright with a thickness of about 1.55μm,low surface roughness,and the best adhesion and corrosion resistance.[Conclusion]Appropriate HEDP concentration in bath is favorable for forming a Cu coating with good comprehensive performance.

关 键 词：无氰镀铜 烧结钕铁硼磁体 羟基乙叉二膦酸 结合力 耐蚀性 

分 类 号：TQ153.14[化学工程—电化学工业]