NdFeB烧结永磁体化学镀Ni-P的研究  

Electroless Nickel-Phosphorus Plating on NdFeB Permanent Magnet

作　　者：胡建文[1] 阎冬青[1] 刁美燕[1] 高青[1] 孟永强[1] 

机构地区：[1]河北科技大学材料科学与工程学院,河北石家庄050054

出　　处：《热加工工艺》2004年第6期23-24,共2页Hot Working Technology

基　　金：河北省教育厅基金资助项目(2001221)

摘　　要：对于NdFeB烧结永磁体,前处理后先超声波预镀铜,然后在pH=7、温度70℃的中性镀液中先施镀40min,再将镀液调至pH=5.5、温度80℃施镀1.5h,获得不同磷含量的Ni-P复合镀层。通过对镀层结合强度、成分和组织结构、孔隙率、耐蚀性等性能测试,结果表明:NdFeB永磁体采用此工艺,可获得孔隙率为零、结合强度较高、表面光洁、具有一定耐蚀性的Ni-P镀层。An ultrasonic-aid pre-plated copper as a base layer was applied in NdFeB permanent magnet. Different phosphorus content composite coating was obtained in the plating process of 70℃ and pH7 for 40 min testing bath firstly, then at 80℃ and pH5.5 for 1.5 h in the same bath. Adhesion, porosity, surface morphology, microstructure and corrosion resistance of the coating were measured.Results show that low porosity, higher adhesion and anti-corrosion Ni-P coating has been obtained by pre-process technology and electroless plating as above.

关 键 词：NdFeB烧结永磁体 超声波预镀铜 化学镀NI-P 耐蚀性 

分 类 号：TG142.77[一般工业技术—材料科学与工程] TG174.44[金属学及工艺—金属材料]