采用超声波化学镀方法,研究了在频率为40 kHz超声波条件下化学镀Ni-P合金对烧结NdFeB磁体抗腐蚀性能的影响,测定了超声功率对沉积速度和镀层磷含量的影响,观察了超声场对镀层表面形貌和Ni-P镀层耐腐蚀性的影响.结果表明,随着超声功率的增大,沉积速度增加,而镀层磷含量略有降低.与无超声场下的Ni-P化学镀层相比,超声条件下化学镀Ni-P合金组织更加细小,排列更加紧密,有更加优良的耐腐蚀性,能有效的保护NdFeB磁体.
参考文献
[1] | Kim AS.;Lizzi T.;Camp FE. .HYDROGEN INDUCED CORROSION MECHANISM IN NDFEB MAGNETS[J].Journal of Applied Physics,1996(8 Pt.2a):4840-4842. |
[2] | Y. Li;H. E. Evans;I. R. Harris .The Oxidation of NdFeB Magnets[J].Oxidation of Metals,2003(1/2):167-182. |
[3] | Y. Hu;M. Aindow;I.P. Jones .Effects of Zn coating on the microstructure and magnetic properties of Nd-Fe-B magnets[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2003(1/2):299-303. |
[4] | 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. |
[5] | Blackwood DJ.;Huang YZ.;Tan CK.;Balakrisnan B. .Influence of the chemical composition of the plating solution on the ability of nickel coatings to protect Nd2Fe14B magnets against corrosion[J].Journal of Magnetism and Magnetic Materials,2001(2):103-111. |
[6] | 张玉昌.NdFeB磁体的电泳涂层工艺研究[J].稀土,1992(04):65. |
[7] | Mallory G O .Electroless nickel deposition in an ultrasonic field[J].Plating and Surface Finishing,1985,72:64-68. |
[8] | Park YS.;Kim TH.;Lee MH.;Kwon SC. .Study on the effect of ultrasonic waves on the characteristics of electroless nickel deposits from an acid bath[J].Surface & Coatings Technology,2002(2/3):245-251. |
[9] | 张天顺;张兆国;张晶秋 等.TL-5化学镀Ni-P合金在NdFe-B永磁体上的工艺研究[J].腐蚀与防护,2002,23(04):152-154. |
[10] | 龚捷.钕铁硼永磁材料化学镀镍工艺研究[J].稀土,1998(03):36. |
[11] | Waikelis A .Surface layer pH in electroless nickel plating in hypophosphite solutions[J].Surface and Coatings Technology,1986,27:301-303. |
[12] | Touyeras F;Hihn JY;Bourgoin X;Jacques B;Hallez L;Branger V .Effects of ultrasonic irradiation on the properties of coatings obtained by electroless plating and electro plating[J].Ultrasonics sonochemistry,2005(1/2):13-19. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%