利用超声辅助电沉积方法,研究了在烧结NdFeB永磁体表面电沉积Ni-P合金的工艺。研究了超声波对NdFeB电沉积Ni-P合金表面形貌和镀层耐蚀性的影响。实验结果表明与无超声场下的Ni-P电沉积层相比,附加超声的电沉积所得Ni-P合金层表面晶粒均匀、细小,排列更为平整,结合力强,耐蚀性较好。
Electroplating Ni-P alloys process on sintered NdFeB was studied which involves with ultrasonic.The influence of ultrasonic on electroplating Ni-P alloy on NdFeB was studied by using microscope,adhesion test and NaCl solution immersion test.The results showed that the Ni-P alloy deposit on NdFeB is rough and has poor adhesion without ultrasonic agitation;however,the Ni-P alloy deposit on NdFeB with ultrasonic agitation has more compact and uniform microstructure,smoother morphology.At the same time,the adhesion and corrosion resistance are greatly enhanced.
参考文献
| [1] | Walton A.;Speight J.D. .A zinc coating method for Nd-Fe-B magnets[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2000(1/2):253-261. |
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